./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product22.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_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/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_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/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_9ce7e2b1-58f4-4b58-a664-609e92cf7572/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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:24:39,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:24:39,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:24:39,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:24:39,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:24:39,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:24:39,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:24:39,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:24:39,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:24:39,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:24:39,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:24:39,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:24:39,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:24:39,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:24:39,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:24:39,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:24:39,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:24:39,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:24:39,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:24:39,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:24:39,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:24:39,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:24:39,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:24:39,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:24:39,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:24:39,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:24:39,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:24:39,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:24:39,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:24:39,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:24:39,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:24:39,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:24:39,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:24:39,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:24:39,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:24:39,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:24:39,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:24:39,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:24:39,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:24:39,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:24:39,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:24:39,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:24:39,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:24:39,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:24:39,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:24:39,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:24:39,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:24:39,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:24:39,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:24:39,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:24:39,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:24:39,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:24:39,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:24:39,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:24:39,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:24:39,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:24:39,103 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_9ce7e2b1-58f4-4b58-a664-609e92cf7572/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2021-12-06 22:24:39,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:24:39,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:24:39,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:24:39,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:24:39,320 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:24:39,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2021-12-06 22:24:39,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/data/73fa3d9b1/b4ffa0276ed4447abb59f73ff51c9f6e/FLAGeacb7ee0c [2021-12-06 22:24:39,821 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:24:39,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2021-12-06 22:24:39,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/data/73fa3d9b1/b4ffa0276ed4447abb59f73ff51c9f6e/FLAGeacb7ee0c [2021-12-06 22:24:39,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/data/73fa3d9b1/b4ffa0276ed4447abb59f73ff51c9f6e [2021-12-06 22:24:39,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:24:39,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:24:39,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:24:39,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:24:39,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:24:39,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:24:39" (1/1) ... [2021-12-06 22:24:39,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f393c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:39, skipping insertion in model container [2021-12-06 22:24:39,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:24:39" (1/1) ... [2021-12-06 22:24:39,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:24:39,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:24:40,120 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_9ce7e2b1-58f4-4b58-a664-609e92cf7572/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2021-12-06 22:24:40,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:24:40,253 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:24:40,284 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_9ce7e2b1-58f4-4b58-a664-609e92cf7572/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2021-12-06 22:24:40,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:24:40,342 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:24:40,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40 WrapperNode [2021-12-06 22:24:40,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:24:40,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:24:40,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:24:40,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:24:40,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,422 INFO L137 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1006 [2021-12-06 22:24:40,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:24:40,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:24:40,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:24:40,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:24:40,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:24:40,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:24:40,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:24:40,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:24:40,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (1/1) ... [2021-12-06 22:24:40,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:24:40,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:40,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:24:40,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:24:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 22:24:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 22:24:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 22:24:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 22:24:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 22:24:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 22:24:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 22:24:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 22:24:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 22:24:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 22:24:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 22:24:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 22:24:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 22:24:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 22:24:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 22:24:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 22:24:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 22:24:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:24:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 22:24:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 22:24:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 22:24:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 22:24:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 22:24:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 22:24:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 22:24:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 22:24:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 22:24:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 22:24:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 22:24:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 22:24:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 22:24:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 22:24:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 22:24:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 22:24:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:24:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 22:24:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 22:24:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:24:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:24:40,712 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:24:40,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:24:41,189 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:24:41,197 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:24:41,197 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:24:41,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:24:41 BoogieIcfgContainer [2021-12-06 22:24:41,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:24:41,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:24:41,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:24:41,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:24:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:24:39" (1/3) ... [2021-12-06 22:24:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b3cfc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:24:41, skipping insertion in model container [2021-12-06 22:24:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:24:40" (2/3) ... [2021-12-06 22:24:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b3cfc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:24:41, skipping insertion in model container [2021-12-06 22:24:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:24:41" (3/3) ... [2021-12-06 22:24:41,205 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2021-12-06 22:24:41,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:24:41,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:24:41,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:24:41,249 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 22:24:41,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:24:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-06 22:24:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 22:24:41,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:41,284 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, 1, 1] [2021-12-06 22:24:41,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash -837891348, now seen corresponding path program 1 times [2021-12-06 22:24:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:41,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015432969] [2021-12-06 22:24:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:24:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:24:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:24:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:24:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:24:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:24:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:24:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:24:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:24:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:24:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:24:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:24:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,665 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 22:24:41,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:41,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015432969] [2021-12-06 22:24:41,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015432969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:41,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160051446] [2021-12-06 22:24:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:41,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:41,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:41,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:24:41,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:24:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:41,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:24:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:41,991 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 22:24:41,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:41,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160051446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:41,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:24:41,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 22:24:41,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362759930] [2021-12-06 22:24:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:41,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:24:41,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:24:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:24:42,021 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:42,063 INFO L93 Difference]: Finished difference Result 509 states and 744 transitions. [2021-12-06 22:24:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:24:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2021-12-06 22:24:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:42,076 INFO L225 Difference]: With dead ends: 509 [2021-12-06 22:24:42,076 INFO L226 Difference]: Without dead ends: 327 [2021-12-06 22:24:42,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 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 22:24:42,084 INFO L933 BasicCegarLoop]: 495 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, 495 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 22:24:42,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-06 22:24:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-12-06 22:24:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.507936507936508) internal successors, (380), 255 states have internal predecessors, (380), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-06 22:24:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 487 transitions. [2021-12-06 22:24:42,138 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 487 transitions. Word has length 114 [2021-12-06 22:24:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:42,139 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 487 transitions. [2021-12-06 22:24:42,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 487 transitions. [2021-12-06 22:24:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 22:24:42,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:42,147 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, 1, 1, 1] [2021-12-06 22:24:42,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:24:42,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 22:24:42,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:42,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1242856840, now seen corresponding path program 1 times [2021-12-06 22:24:42,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:42,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090951386] [2021-12-06 22:24:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:42,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:24:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:24:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:24:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:24:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:24:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:24:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:24:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:24:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:24:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:24:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:24:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:24:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,516 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 22:24:42,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:42,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090951386] [2021-12-06 22:24:42,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090951386] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:42,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198842866] [2021-12-06 22:24:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:42,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:42,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:24:42,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:24:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:42,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:24:42,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:42,793 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 22:24:42,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:42,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198842866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:42,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:24:42,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:24:42,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943016866] [2021-12-06 22:24:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:42,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:24:42,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:24:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:24:42,796 INFO L87 Difference]: Start difference. First operand 327 states and 487 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:42,827 INFO L93 Difference]: Finished difference Result 499 states and 725 transitions. [2021-12-06 22:24:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:24:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2021-12-06 22:24:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:42,831 INFO L225 Difference]: With dead ends: 499 [2021-12-06 22:24:42,838 INFO L226 Difference]: Without dead ends: 330 [2021-12-06 22:24:42,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:24:42,841 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 22:24:42,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-06 22:24:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2021-12-06 22:24:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 257 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-06 22:24:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 489 transitions. [2021-12-06 22:24:42,867 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 489 transitions. Word has length 115 [2021-12-06 22:24:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:42,867 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 489 transitions. [2021-12-06 22:24:42,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 489 transitions. [2021-12-06 22:24:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 22:24:42,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:42,872 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, 1, 1, 1, 1, 1] [2021-12-06 22:24:42,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:24:43,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:43,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 961162571, now seen corresponding path program 1 times [2021-12-06 22:24:43,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:43,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528803218] [2021-12-06 22:24:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:43,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:24:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:24:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:24:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:24:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:24:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:24:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:24:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:24:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:24:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:24:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:24:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:24:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,313 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 22:24:43,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:43,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528803218] [2021-12-06 22:24:43,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528803218] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:43,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863417974] [2021-12-06 22:24:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:43,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:43,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:24:43,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:24:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:43,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:24:43,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:43,582 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 22:24:43,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:43,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863417974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:43,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:24:43,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:24:43,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578496428] [2021-12-06 22:24:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:43,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:24:43,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:43,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:24:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:24:43,584 INFO L87 Difference]: Start difference. First operand 329 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:43,615 INFO L93 Difference]: Finished difference Result 693 states and 1045 transitions. [2021-12-06 22:24:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:24:43,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2021-12-06 22:24:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:43,619 INFO L225 Difference]: With dead ends: 693 [2021-12-06 22:24:43,619 INFO L226 Difference]: Without dead ends: 391 [2021-12-06 22:24:43,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:24:43,622 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 115 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 947 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 22:24:43,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 947 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-06 22:24:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 383. [2021-12-06 22:24:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 297 states have (on average 1.5218855218855218) internal successors, (452), 300 states have internal predecessors, (452), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-06 22:24:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 581 transitions. [2021-12-06 22:24:43,657 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 581 transitions. Word has length 124 [2021-12-06 22:24:43,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:43,657 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 581 transitions. [2021-12-06 22:24:43,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 581 transitions. [2021-12-06 22:24:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 22:24:43,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:43,661 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:43,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:24:43,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 22:24:43,863 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:43,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2046598277, now seen corresponding path program 1 times [2021-12-06 22:24:43,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:43,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348561701] [2021-12-06 22:24:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:43,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:24:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:24:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:24:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:24:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:24:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:24:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:24:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:24:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:24:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:24:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:24:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:24:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,083 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 22:24:44,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348561701] [2021-12-06 22:24:44,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348561701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261177471] [2021-12-06 22:24:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:44,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:44,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:24:44,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:24:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:24:44,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:44,402 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 22:24:44,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:44,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261177471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:44,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:24:44,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:24:44,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020848652] [2021-12-06 22:24:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:44,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:24:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:24:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:24:44,405 INFO L87 Difference]: Start difference. First operand 383 states and 581 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:44,464 INFO L93 Difference]: Finished difference Result 757 states and 1152 transitions. [2021-12-06 22:24:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:24:44,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2021-12-06 22:24:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:44,468 INFO L225 Difference]: With dead ends: 757 [2021-12-06 22:24:44,468 INFO L226 Difference]: Without dead ends: 385 [2021-12-06 22:24:44,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:24:44,471 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 133 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1760 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 22:24:44,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1760 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:44,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-06 22:24:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2021-12-06 22:24:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 298 states have (on average 1.5201342281879195) internal successors, (453), 302 states have internal predecessors, (453), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-06 22:24:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 584 transitions. [2021-12-06 22:24:44,503 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 584 transitions. Word has length 125 [2021-12-06 22:24:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:44,503 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 584 transitions. [2021-12-06 22:24:44,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 584 transitions. [2021-12-06 22:24:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 22:24:44,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:44,507 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:44,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:24:44,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:44,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1442355528, now seen corresponding path program 1 times [2021-12-06 22:24:44,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:44,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736023658] [2021-12-06 22:24:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:44,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:24:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:24:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:24:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:24:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:24:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:24:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:24:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:24:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:24:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:24:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:24:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:44,937 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 22:24:44,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736023658] [2021-12-06 22:24:44,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736023658] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242822121] [2021-12-06 22:24:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:44,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:44,939 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:24:44,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:24:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:24:45,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:45,217 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 22:24:45,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:24:45,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242822121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:45,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:24:45,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:24:45,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223615864] [2021-12-06 22:24:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:45,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:24:45,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:24:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:24:45,219 INFO L87 Difference]: Start difference. First operand 385 states and 584 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:45,274 INFO L93 Difference]: Finished difference Result 759 states and 1157 transitions. [2021-12-06 22:24:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:24:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2021-12-06 22:24:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:45,277 INFO L225 Difference]: With dead ends: 759 [2021-12-06 22:24:45,277 INFO L226 Difference]: Without dead ends: 387 [2021-12-06 22:24:45,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:24:45,280 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 132 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1749 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 22:24:45,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1749 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:24:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-06 22:24:45,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-12-06 22:24:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2021-12-06 22:24:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 590 transitions. [2021-12-06 22:24:45,309 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 590 transitions. Word has length 126 [2021-12-06 22:24:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:45,310 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 590 transitions. [2021-12-06 22:24:45,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 590 transitions. [2021-12-06 22:24:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:24:45,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:45,312 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, 1, 1] [2021-12-06 22:24:45,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:24:45,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:45,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:45,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 133086659, now seen corresponding path program 1 times [2021-12-06 22:24:45,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:45,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35571307] [2021-12-06 22:24:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:45,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:24:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:24:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:24:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:24:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:24:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:24:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:24:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:24:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:24:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:24:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:45,634 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 22:24:45,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:45,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35571307] [2021-12-06 22:24:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35571307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:45,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:45,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:24:45,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625578752] [2021-12-06 22:24:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:45,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:24:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:24:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:24:45,636 INFO L87 Difference]: Start difference. First operand 387 states and 590 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:46,914 INFO L93 Difference]: Finished difference Result 926 states and 1420 transitions. [2021-12-06 22:24:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:24:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2021-12-06 22:24:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:46,920 INFO L225 Difference]: With dead ends: 926 [2021-12-06 22:24:46,920 INFO L226 Difference]: Without dead ends: 562 [2021-12-06 22:24:46,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:24:46,923 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1145 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:46,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 1750 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:24:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-06 22:24:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 387. [2021-12-06 22:24:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2021-12-06 22:24:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 589 transitions. [2021-12-06 22:24:46,964 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 589 transitions. Word has length 127 [2021-12-06 22:24:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:46,964 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 589 transitions. [2021-12-06 22:24:46,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 589 transitions. [2021-12-06 22:24:46,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 22:24:46,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:46,968 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, 1, 1, 1, 1] [2021-12-06 22:24:46,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:24:46,968 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1356241106, now seen corresponding path program 2 times [2021-12-06 22:24:46,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:46,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366194404] [2021-12-06 22:24:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:46,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:24:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:24:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:24:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:24:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:24:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:24:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:24:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:24:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:24:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:24:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:47,073 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 22:24:47,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:47,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366194404] [2021-12-06 22:24:47,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366194404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:47,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:47,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:24:47,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126825027] [2021-12-06 22:24:47,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:47,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:24:47,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:47,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:24:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:24:47,075 INFO L87 Difference]: Start difference. First operand 387 states and 589 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:48,175 INFO L93 Difference]: Finished difference Result 928 states and 1423 transitions. [2021-12-06 22:24:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:24:48,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2021-12-06 22:24:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:48,179 INFO L225 Difference]: With dead ends: 928 [2021-12-06 22:24:48,179 INFO L226 Difference]: Without dead ends: 564 [2021-12-06 22:24:48,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:24:48,181 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1140 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:48,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 1751 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:24:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-12-06 22:24:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2021-12-06 22:24:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (72), 64 states have call predecessors, (72), 64 states have call successors, (72) [2021-12-06 22:24:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 592 transitions. [2021-12-06 22:24:48,203 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 592 transitions. Word has length 128 [2021-12-06 22:24:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:48,203 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 592 transitions. [2021-12-06 22:24:48,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:24:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 592 transitions. [2021-12-06 22:24:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 22:24:48,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:48,205 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, 1, 1, 1, 1] [2021-12-06 22:24:48,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:24:48,205 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1805433256, now seen corresponding path program 1 times [2021-12-06 22:24:48,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:48,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189410309] [2021-12-06 22:24:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:48,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:24:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:24:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:24:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:24:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:24:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:24:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:24:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:24:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:24:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:48,317 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 22:24:48,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:48,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189410309] [2021-12-06 22:24:48,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189410309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:48,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:48,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:24:48,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882173549] [2021-12-06 22:24:48,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:48,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:24:48,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:24:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:24:48,319 INFO L87 Difference]: Start difference. First operand 389 states and 592 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 22:24:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:49,798 INFO L93 Difference]: Finished difference Result 926 states and 1418 transitions. [2021-12-06 22:24:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:24:49,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 129 [2021-12-06 22:24:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:49,802 INFO L225 Difference]: With dead ends: 926 [2021-12-06 22:24:49,802 INFO L226 Difference]: Without dead ends: 564 [2021-12-06 22:24:49,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:24:49,804 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1260 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 3874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:49,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 2295 Invalid, 3874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 3334 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 22:24:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-12-06 22:24:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2021-12-06 22:24:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2021-12-06 22:24:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 591 transitions. [2021-12-06 22:24:49,825 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 591 transitions. Word has length 129 [2021-12-06 22:24:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:49,825 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 591 transitions. [2021-12-06 22:24:49,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 22:24:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 591 transitions. [2021-12-06 22:24:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 22:24:49,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:49,827 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:49,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:24:49,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2015086925, now seen corresponding path program 2 times [2021-12-06 22:24:49,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:49,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399286958] [2021-12-06 22:24:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:49,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:24:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:24:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:24:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:24:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:24:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:24:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:24:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:24:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:24:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:49,937 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 22:24:49,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:49,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399286958] [2021-12-06 22:24:49,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399286958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:49,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:49,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:24:49,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143320677] [2021-12-06 22:24:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:49,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:24:49,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:24:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:24:49,938 INFO L87 Difference]: Start difference. First operand 389 states and 591 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 22:24:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:51,326 INFO L93 Difference]: Finished difference Result 928 states and 1424 transitions. [2021-12-06 22:24:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:24:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 130 [2021-12-06 22:24:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:51,330 INFO L225 Difference]: With dead ends: 928 [2021-12-06 22:24:51,330 INFO L226 Difference]: Without dead ends: 566 [2021-12-06 22:24:51,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:24:51,332 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 1255 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:51,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 2296 Invalid, 3905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 3374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 22:24:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-12-06 22:24:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 391. [2021-12-06 22:24:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 301 states have (on average 1.5149501661129567) internal successors, (456), 308 states have internal predecessors, (456), 65 states have call successors, (65), 20 states have call predecessors, (65), 24 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2021-12-06 22:24:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2021-12-06 22:24:51,354 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 130 [2021-12-06 22:24:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:51,354 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2021-12-06 22:24:51,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 22:24:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2021-12-06 22:24:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 22:24:51,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:51,357 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:51,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:24:51,357 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash 606209165, now seen corresponding path program 1 times [2021-12-06 22:24:51,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:51,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67089190] [2021-12-06 22:24:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:51,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:24:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:24:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:24:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:24:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:24:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:24:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:24:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:24:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:24:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:24:51,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:51,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67089190] [2021-12-06 22:24:51,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67089190] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:51,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489473942] [2021-12-06 22:24:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:51,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:24:51,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:24:51,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:24:51,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:24:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:51,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:24:51,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:24:51,709 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 22:24:51,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:24:51,837 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 22:24:51,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489473942] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:24:51,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:24:51,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 22:24:51,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945630257] [2021-12-06 22:24:51,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:24:51,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:24:51,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:24:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:24:51,839 INFO L87 Difference]: Start difference. First operand 391 states and 597 transitions. Second operand has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-06 22:24:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:53,790 INFO L93 Difference]: Finished difference Result 1657 states and 2732 transitions. [2021-12-06 22:24:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:24:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 131 [2021-12-06 22:24:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:53,798 INFO L225 Difference]: With dead ends: 1657 [2021-12-06 22:24:53,799 INFO L226 Difference]: Without dead ends: 1297 [2021-12-06 22:24:53,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:24:53,801 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 3510 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 4313 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 4313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:53,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 3852 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1405 Valid, 4313 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 22:24:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-12-06 22:24:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 744. [2021-12-06 22:24:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 590 states have (on average 1.571186440677966) internal successors, (927), 597 states have internal predecessors, (927), 129 states have call successors, (129), 20 states have call predecessors, (129), 24 states have return successors, (150), 128 states have call predecessors, (150), 128 states have call successors, (150) [2021-12-06 22:24:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1206 transitions. [2021-12-06 22:24:53,849 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1206 transitions. Word has length 131 [2021-12-06 22:24:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:53,850 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1206 transitions. [2021-12-06 22:24:53,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-06 22:24:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1206 transitions. [2021-12-06 22:24:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:24:53,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:53,853 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 22:24:53,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 22:24:54,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 22:24:54,055 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2003089632, now seen corresponding path program 1 times [2021-12-06 22:24:54,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:54,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570970165] [2021-12-06 22:24:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:54,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:24:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:24:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:24:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:24:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:24:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:24:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:24:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:24:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:24:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:54,174 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 22:24:54,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:54,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570970165] [2021-12-06 22:24:54,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570970165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:54,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:54,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:24:54,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235894964] [2021-12-06 22:24:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:54,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:24:54,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:24:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:24:54,176 INFO L87 Difference]: Start difference. First operand 744 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:54,977 INFO L93 Difference]: Finished difference Result 1918 states and 3175 transitions. [2021-12-06 22:24:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:24:54,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2021-12-06 22:24:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:54,986 INFO L225 Difference]: With dead ends: 1918 [2021-12-06 22:24:54,986 INFO L226 Difference]: Without dead ends: 1252 [2021-12-06 22:24:54,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:24:54,990 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1135 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:54,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 1480 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:24:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-12-06 22:24:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1069. [2021-12-06 22:24:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 851 states have (on average 1.5887191539365453) internal successors, (1352), 858 states have internal predecessors, (1352), 193 states have call successors, (193), 20 states have call predecessors, (193), 24 states have return successors, (224), 192 states have call predecessors, (224), 192 states have call successors, (224) [2021-12-06 22:24:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1769 transitions. [2021-12-06 22:24:55,064 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1769 transitions. Word has length 134 [2021-12-06 22:24:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:55,064 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1769 transitions. [2021-12-06 22:24:55,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1769 transitions. [2021-12-06 22:24:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 22:24:55,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:55,069 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 22:24:55,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:24:55,069 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:55,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash -725448431, now seen corresponding path program 1 times [2021-12-06 22:24:55,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:55,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779807386] [2021-12-06 22:24:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:55,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:24:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:24:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:24:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:24:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:24:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:24:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:24:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:24:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:24:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:55,149 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 22:24:55,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779807386] [2021-12-06 22:24:55,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779807386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:55,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:55,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:24:55,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574623796] [2021-12-06 22:24:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:55,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:24:55,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:24:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:24:55,151 INFO L87 Difference]: Start difference. First operand 1069 states and 1769 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:56,012 INFO L93 Difference]: Finished difference Result 2723 states and 4559 transitions. [2021-12-06 22:24:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:24:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2021-12-06 22:24:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:56,022 INFO L225 Difference]: With dead ends: 2723 [2021-12-06 22:24:56,022 INFO L226 Difference]: Without dead ends: 1785 [2021-12-06 22:24:56,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:24:56,025 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1133 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:56,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 1445 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:24:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-12-06 22:24:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1602. [2021-12-06 22:24:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1289 states have (on average 1.5965865011636928) internal successors, (2058), 1296 states have internal predecessors, (2058), 288 states have call successors, (288), 20 states have call predecessors, (288), 24 states have return successors, (319), 287 states have call predecessors, (319), 287 states have call successors, (319) [2021-12-06 22:24:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2665 transitions. [2021-12-06 22:24:56,113 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2665 transitions. Word has length 135 [2021-12-06 22:24:56,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:56,114 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2665 transitions. [2021-12-06 22:24:56,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2665 transitions. [2021-12-06 22:24:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 22:24:56,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:56,121 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 22:24:56,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:24:56,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:56,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:56,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1399764622, now seen corresponding path program 1 times [2021-12-06 22:24:56,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:56,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555452594] [2021-12-06 22:24:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:56,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:24:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:24:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:24:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:24:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:24:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:24:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:24:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:24:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:24:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:56,201 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 22:24:56,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:56,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555452594] [2021-12-06 22:24:56,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555452594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:56,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:56,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:24:56,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447458988] [2021-12-06 22:24:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:56,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:24:56,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:24:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:24:56,203 INFO L87 Difference]: Start difference. First operand 1602 states and 2665 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:57,087 INFO L93 Difference]: Finished difference Result 3930 states and 6645 transitions. [2021-12-06 22:24:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:24:57,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2021-12-06 22:24:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:57,100 INFO L225 Difference]: With dead ends: 3930 [2021-12-06 22:24:57,100 INFO L226 Difference]: Without dead ends: 2594 [2021-12-06 22:24:57,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:24:57,104 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1131 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:57,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 1416 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:24:57,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-12-06 22:24:57,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2411. [2021-12-06 22:24:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 1975 states have (on average 1.6025316455696204) internal successors, (3165), 1982 states have internal predecessors, (3165), 411 states have call successors, (411), 20 states have call predecessors, (411), 24 states have return successors, (458), 410 states have call predecessors, (458), 410 states have call successors, (458) [2021-12-06 22:24:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4034 transitions. [2021-12-06 22:24:57,234 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4034 transitions. Word has length 136 [2021-12-06 22:24:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:57,235 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 4034 transitions. [2021-12-06 22:24:57,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4034 transitions. [2021-12-06 22:24:57,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 22:24:57,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:57,243 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 22:24:57,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:24:57,243 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1059729584, now seen corresponding path program 1 times [2021-12-06 22:24:57,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:57,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165142547] [2021-12-06 22:24:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:57,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:24:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:24:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:24:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:24:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:24:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:24:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:24:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:24:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:24:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,324 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 22:24:57,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165142547] [2021-12-06 22:24:57,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165142547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:57,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:57,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:24:57,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409383202] [2021-12-06 22:24:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:57,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:24:57,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:57,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:24:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:24:57,326 INFO L87 Difference]: Start difference. First operand 2411 states and 4034 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:58,390 INFO L93 Difference]: Finished difference Result 5814 states and 9905 transitions. [2021-12-06 22:24:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:24:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2021-12-06 22:24:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:58,409 INFO L225 Difference]: With dead ends: 5814 [2021-12-06 22:24:58,409 INFO L226 Difference]: Without dead ends: 3888 [2021-12-06 22:24:58,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:24:58,415 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1129 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:58,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 1422 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:24:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-12-06 22:24:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3705. [2021-12-06 22:24:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 3090 states have (on average 1.606148867313916) internal successors, (4963), 3097 states have internal predecessors, (4963), 590 states have call successors, (590), 20 states have call predecessors, (590), 24 states have return successors, (663), 589 states have call predecessors, (663), 589 states have call successors, (663) [2021-12-06 22:24:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 6216 transitions. [2021-12-06 22:24:58,614 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 6216 transitions. Word has length 137 [2021-12-06 22:24:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:58,614 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 6216 transitions. [2021-12-06 22:24:58,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 6216 transitions. [2021-12-06 22:24:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-06 22:24:58,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:58,625 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 22:24:58,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:24:58,625 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash 277368982, now seen corresponding path program 1 times [2021-12-06 22:24:58,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:58,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336872109] [2021-12-06 22:24:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:58,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:24:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:24:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:24:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:24:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:24:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:24:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:24:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:24:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:24:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:58,693 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 22:24:58,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:58,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336872109] [2021-12-06 22:24:58,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336872109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:58,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:58,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:24:58,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469188533] [2021-12-06 22:24:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:58,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:24:58,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:24:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:24:58,694 INFO L87 Difference]: Start difference. First operand 3705 states and 6216 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:24:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:59,762 INFO L93 Difference]: Finished difference Result 8917 states and 15269 transitions. [2021-12-06 22:24:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:24:59,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2021-12-06 22:24:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:59,791 INFO L225 Difference]: With dead ends: 8917 [2021-12-06 22:24:59,791 INFO L226 Difference]: Without dead ends: 6029 [2021-12-06 22:24:59,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:24:59,798 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1127 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:59,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 1446 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:24:59,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2021-12-06 22:25:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5846. [2021-12-06 22:25:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5846 states, 4855 states have (on average 1.600205973223481) internal successors, (7769), 4862 states have internal predecessors, (7769), 966 states have call successors, (966), 20 states have call predecessors, (966), 24 states have return successors, (1083), 965 states have call predecessors, (1083), 965 states have call successors, (1083) [2021-12-06 22:25:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 9818 transitions. [2021-12-06 22:25:00,105 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 9818 transitions. Word has length 138 [2021-12-06 22:25:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:00,105 INFO L470 AbstractCegarLoop]: Abstraction has 5846 states and 9818 transitions. [2021-12-06 22:25:00,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 9818 transitions. [2021-12-06 22:25:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-06 22:25:00,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:00,119 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 22:25:00,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:25:00,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 140546444, now seen corresponding path program 1 times [2021-12-06 22:25:00,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481591323] [2021-12-06 22:25:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:00,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:25:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:25:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:25:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:25:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:25:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:25:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:25:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:25:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:25:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:00,195 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 22:25:00,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481591323] [2021-12-06 22:25:00,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481591323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:00,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:00,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:25:00,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815872198] [2021-12-06 22:25:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:00,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:00,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:00,196 INFO L87 Difference]: Start difference. First operand 5846 states and 9818 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:01,359 INFO L93 Difference]: Finished difference Result 14534 states and 24882 transitions. [2021-12-06 22:25:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:25:01,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2021-12-06 22:25:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:01,399 INFO L225 Difference]: With dead ends: 14534 [2021-12-06 22:25:01,399 INFO L226 Difference]: Without dead ends: 9907 [2021-12-06 22:25:01,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:25:01,412 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1125 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:01,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 1426 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:25:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9907 states. [2021-12-06 22:25:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9907 to 9724. [2021-12-06 22:25:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9724 states, 8127 states have (on average 1.598129691152947) internal successors, (12988), 8134 states have internal predecessors, (12988), 1572 states have call successors, (1572), 20 states have call predecessors, (1572), 24 states have return successors, (1767), 1571 states have call predecessors, (1767), 1571 states have call successors, (1767) [2021-12-06 22:25:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9724 states to 9724 states and 16327 transitions. [2021-12-06 22:25:01,910 INFO L78 Accepts]: Start accepts. Automaton has 9724 states and 16327 transitions. Word has length 139 [2021-12-06 22:25:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 9724 states and 16327 transitions. [2021-12-06 22:25:01,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 9724 states and 16327 transitions. [2021-12-06 22:25:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 22:25:01,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:01,929 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 22:25:01,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:25:01,929 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:01,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1438515912, now seen corresponding path program 1 times [2021-12-06 22:25:01,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:01,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815667747] [2021-12-06 22:25:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:01,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:25:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:25:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:25:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:25:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:25:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:25:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:25:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:25:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:25:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:02,034 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 22:25:02,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815667747] [2021-12-06 22:25:02,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815667747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:02,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:02,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:25:02,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070709248] [2021-12-06 22:25:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:02,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:02,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:02,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:02,036 INFO L87 Difference]: Start difference. First operand 9724 states and 16327 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:03,580 INFO L93 Difference]: Finished difference Result 25243 states and 43163 transitions. [2021-12-06 22:25:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:25:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2021-12-06 22:25:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:03,633 INFO L225 Difference]: With dead ends: 25243 [2021-12-06 22:25:03,633 INFO L226 Difference]: Without dead ends: 17220 [2021-12-06 22:25:03,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:25:03,656 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1123 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:03,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1488 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:25:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2021-12-06 22:25:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 17037. [2021-12-06 22:25:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17037 states, 14237 states have (on average 1.5898012221675915) internal successors, (22634), 14244 states have internal predecessors, (22634), 2775 states have call successors, (2775), 20 states have call predecessors, (2775), 24 states have return successors, (3114), 2774 states have call predecessors, (3114), 2774 states have call successors, (3114) [2021-12-06 22:25:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17037 states to 17037 states and 28523 transitions. [2021-12-06 22:25:04,485 INFO L78 Accepts]: Start accepts. Automaton has 17037 states and 28523 transitions. Word has length 140 [2021-12-06 22:25:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:04,486 INFO L470 AbstractCegarLoop]: Abstraction has 17037 states and 28523 transitions. [2021-12-06 22:25:04,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 17037 states and 28523 transitions. [2021-12-06 22:25:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 22:25:04,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:04,509 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 22:25:04,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:25:04,510 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:04,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1518474229, now seen corresponding path program 1 times [2021-12-06 22:25:04,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:04,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934444969] [2021-12-06 22:25:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:04,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:25:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:25:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:25:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:25:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:25:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:25:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:25:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:25:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:25:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:04,584 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 22:25:04,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:04,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934444969] [2021-12-06 22:25:04,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934444969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:04,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:04,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:25:04,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226873462] [2021-12-06 22:25:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:04,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:04,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:04,586 INFO L87 Difference]: Start difference. First operand 17037 states and 28523 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:06,641 INFO L93 Difference]: Finished difference Result 45219 states and 77176 transitions. [2021-12-06 22:25:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:25:06,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2021-12-06 22:25:06,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:06,725 INFO L225 Difference]: With dead ends: 45219 [2021-12-06 22:25:06,725 INFO L226 Difference]: Without dead ends: 30560 [2021-12-06 22:25:06,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:25:06,748 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1121 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:06,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 1427 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:25:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30560 states. [2021-12-06 22:25:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30560 to 30377. [2021-12-06 22:25:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30377 states, 25538 states have (on average 1.5857545618294306) internal successors, (40497), 25545 states have internal predecessors, (40497), 4814 states have call successors, (4814), 20 states have call predecessors, (4814), 24 states have return successors, (5427), 4813 states have call predecessors, (5427), 4813 states have call successors, (5427) [2021-12-06 22:25:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30377 states to 30377 states and 50738 transitions. [2021-12-06 22:25:08,406 INFO L78 Accepts]: Start accepts. Automaton has 30377 states and 50738 transitions. Word has length 141 [2021-12-06 22:25:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:08,406 INFO L470 AbstractCegarLoop]: Abstraction has 30377 states and 50738 transitions. [2021-12-06 22:25:08,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 30377 states and 50738 transitions. [2021-12-06 22:25:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 22:25:08,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:08,431 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 22:25:08,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:25:08,431 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1327471622, now seen corresponding path program 1 times [2021-12-06 22:25:08,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:08,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483581496] [2021-12-06 22:25:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:08,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:25:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:25:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:25:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:25:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:25:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:25:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:25:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:25:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:25:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:08,502 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 22:25:08,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:08,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483581496] [2021-12-06 22:25:08,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483581496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:08,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:08,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:25:08,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128360245] [2021-12-06 22:25:08,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:08,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:08,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:08,503 INFO L87 Difference]: Start difference. First operand 30377 states and 50738 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:11,426 INFO L93 Difference]: Finished difference Result 82956 states and 140700 transitions. [2021-12-06 22:25:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:25:11,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2021-12-06 22:25:11,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:11,577 INFO L225 Difference]: With dead ends: 82956 [2021-12-06 22:25:11,577 INFO L226 Difference]: Without dead ends: 55769 [2021-12-06 22:25:11,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:25:11,626 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1119 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:11,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 1421 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:25:11,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55769 states. [2021-12-06 22:25:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55769 to 55586. [2021-12-06 22:25:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55586 states, 47032 states have (on average 1.5803708113624766) internal successors, (74328), 47039 states have internal predecessors, (74328), 8529 states have call successors, (8529), 20 states have call predecessors, (8529), 24 states have return successors, (9674), 8528 states have call predecessors, (9674), 8528 states have call successors, (9674) [2021-12-06 22:25:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55586 states to 55586 states and 92531 transitions. [2021-12-06 22:25:14,664 INFO L78 Accepts]: Start accepts. Automaton has 55586 states and 92531 transitions. Word has length 142 [2021-12-06 22:25:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:14,664 INFO L470 AbstractCegarLoop]: Abstraction has 55586 states and 92531 transitions. [2021-12-06 22:25:14,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 55586 states and 92531 transitions. [2021-12-06 22:25:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 22:25:14,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:14,698 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 22:25:14,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:25:14,698 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash -862922485, now seen corresponding path program 1 times [2021-12-06 22:25:14,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:14,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753622526] [2021-12-06 22:25:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:14,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:25:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:25:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:25:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:25:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:25:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:25:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:25:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:25:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:25:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:14,768 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 22:25:14,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753622526] [2021-12-06 22:25:14,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753622526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:14,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:14,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:25:14,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113398460] [2021-12-06 22:25:14,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:14,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:25:14,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:25:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:25:14,769 INFO L87 Difference]: Start difference. First operand 55586 states and 92531 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:19,824 INFO L93 Difference]: Finished difference Result 104012 states and 176686 transitions. [2021-12-06 22:25:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:25:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2021-12-06 22:25:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:20,142 INFO L225 Difference]: With dead ends: 104012 [2021-12-06 22:25:20,142 INFO L226 Difference]: Without dead ends: 103843 [2021-12-06 22:25:20,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:25:20,183 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1117 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:20,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 1421 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:25:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103843 states. [2021-12-06 22:25:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103843 to 103660. [2021-12-06 22:25:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103660 states, 88307 states have (on average 1.573589862638296) internal successors, (138959), 88314 states have internal predecessors, (138959), 15328 states have call successors, (15328), 20 states have call predecessors, (15328), 24 states have return successors, (17519), 15327 states have call predecessors, (17519), 15327 states have call successors, (17519) [2021-12-06 22:25:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103660 states to 103660 states and 171806 transitions. [2021-12-06 22:25:25,517 INFO L78 Accepts]: Start accepts. Automaton has 103660 states and 171806 transitions. Word has length 143 [2021-12-06 22:25:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:25,517 INFO L470 AbstractCegarLoop]: Abstraction has 103660 states and 171806 transitions. [2021-12-06 22:25:25,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:25:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 103660 states and 171806 transitions. [2021-12-06 22:25:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 22:25:25,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:25,566 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] [2021-12-06 22:25:25,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:25:25,567 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1901199879, now seen corresponding path program 1 times [2021-12-06 22:25:25,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:25,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378047314] [2021-12-06 22:25:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:25,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:25:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:25:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:25:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:25:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:25:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:25:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:25:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:25:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:25:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,711 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 22:25:25,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378047314] [2021-12-06 22:25:25,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378047314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:25:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45150259] [2021-12-06 22:25:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:25,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:25:25,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:25:25,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:25:25,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:25:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:25,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:25:25,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:25:26,179 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 22:25:26,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:25:26,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45150259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:26,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:25:26,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2021-12-06 22:25:26,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846102462] [2021-12-06 22:25:26,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:26,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:25:26,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:25:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:25:26,181 INFO L87 Difference]: Start difference. First operand 103660 states and 171806 transitions. Second operand has 12 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 22:25:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:34,812 INFO L93 Difference]: Finished difference Result 206721 states and 348089 transitions. [2021-12-06 22:25:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:25:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 144 [2021-12-06 22:25:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:35,538 INFO L225 Difference]: With dead ends: 206721 [2021-12-06 22:25:35,538 INFO L226 Difference]: Without dead ends: 206558 [2021-12-06 22:25:35,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 22:25:35,606 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1074 mSDsluCounter, 4268 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 4967 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:35,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 4967 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:25:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206558 states. [2021-12-06 22:25:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206558 to 206513. [2021-12-06 22:25:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206513 states, 175973 states have (on average 1.574326743307212) internal successors, (277039), 175878 states have internal predecessors, (277039), 30479 states have call successors, (30479), 53 states have call predecessors, (30479), 60 states have return successors, (38140), 30589 states have call predecessors, (38140), 30476 states have call successors, (38140) [2021-12-06 22:25:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206513 states to 206513 states and 345658 transitions. [2021-12-06 22:25:46,576 INFO L78 Accepts]: Start accepts. Automaton has 206513 states and 345658 transitions. Word has length 144 [2021-12-06 22:25:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:25:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 206513 states and 345658 transitions. [2021-12-06 22:25:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 22:25:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 206513 states and 345658 transitions. [2021-12-06 22:25:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 22:25:46,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:25:46,667 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] [2021-12-06 22:25:46,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:25:46,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 22:25:46,868 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:25:46,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:25:46,869 INFO L85 PathProgramCache]: Analyzing trace with hash -33726266, now seen corresponding path program 1 times [2021-12-06 22:25:46,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:25:46,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826240127] [2021-12-06 22:25:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:25:46,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:25:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:25:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:25:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:25:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:25:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:25:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:25:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:25:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:25:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:25:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:25:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:25:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:25:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:25:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:25:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:25:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:25:46,996 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 22:25:46,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:25:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826240127] [2021-12-06 22:25:46,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826240127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:25:46,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:25:46,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:25:46,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357373991] [2021-12-06 22:25:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:25:46,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:25:46,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:25:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:25:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:25:46,997 INFO L87 Difference]: Start difference. First operand 206513 states and 345658 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 22:25:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:57,974 INFO L93 Difference]: Finished difference Result 209522 states and 356754 transitions. [2021-12-06 22:25:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 22:25:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 145 [2021-12-06 22:25:57,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:58,635 INFO L225 Difference]: With dead ends: 209522 [2021-12-06 22:25:58,635 INFO L226 Difference]: Without dead ends: 207455 [2021-12-06 22:25:58,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:25:58,707 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 2640 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 1641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 5207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1641 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:58,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2655 Valid, 2377 Invalid, 5207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1641 Valid, 3566 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 22:25:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207455 states. [2021-12-06 22:26:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207455 to 206634. [2021-12-06 22:26:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206634 states, 176057 states have (on average 1.5741606411559892) internal successors, (277142), 175964 states have internal predecessors, (277142), 30514 states have call successors, (30514), 56 states have call predecessors, (30514), 62 states have return successors, (38184), 30624 states have call predecessors, (38184), 30511 states have call successors, (38184) [2021-12-06 22:26:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206634 states to 206634 states and 345840 transitions. [2021-12-06 22:26:10,310 INFO L78 Accepts]: Start accepts. Automaton has 206634 states and 345840 transitions. Word has length 145 [2021-12-06 22:26:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:10,311 INFO L470 AbstractCegarLoop]: Abstraction has 206634 states and 345840 transitions. [2021-12-06 22:26:10,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 22:26:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 206634 states and 345840 transitions. [2021-12-06 22:26:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 22:26:10,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:10,398 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] [2021-12-06 22:26:10,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:26:10,398 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1910656610, now seen corresponding path program 1 times [2021-12-06 22:26:10,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:10,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593195441] [2021-12-06 22:26:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:10,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:26:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:26:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:26:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:26:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:26:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:26:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:26:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:26:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:26:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:26:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:26:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:26:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:26:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:26:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:26:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,733 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 22:26:10,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:10,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593195441] [2021-12-06 22:26:10,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593195441] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:26:10,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074625057] [2021-12-06 22:26:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:10,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:10,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:10,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:10,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:26:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:26:10,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:11,263 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 22:26:11,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:26:11,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074625057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:11,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:26:11,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2021-12-06 22:26:11,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228858753] [2021-12-06 22:26:11,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:11,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:26:11,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:26:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:26:11,265 INFO L87 Difference]: Start difference. First operand 206634 states and 345840 transitions. Second operand has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 22:26:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:28,888 INFO L93 Difference]: Finished difference Result 410345 states and 697785 transitions. [2021-12-06 22:26:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:26:28,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 145 [2021-12-06 22:26:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:30,349 INFO L225 Difference]: With dead ends: 410345 [2021-12-06 22:26:30,349 INFO L226 Difference]: Without dead ends: 409838 [2021-12-06 22:26:30,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 22:26:30,474 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1029 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 5277 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:30,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 5277 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:26:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409838 states. [2021-12-06 22:26:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409838 to 409712. [2021-12-06 22:26:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409712 states, 349171 states have (on average 1.575316965040052) internal successors, (550055), 348814 states have internal predecessors, (550055), 60406 states have call successors, (60406), 122 states have call predecessors, (60406), 134 states have return successors, (84276), 60802 states have call predecessors, (84276), 60399 states have call successors, (84276) [2021-12-06 22:26:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409712 states to 409712 states and 694737 transitions. [2021-12-06 22:26:54,962 INFO L78 Accepts]: Start accepts. Automaton has 409712 states and 694737 transitions. Word has length 145 [2021-12-06 22:26:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:54,962 INFO L470 AbstractCegarLoop]: Abstraction has 409712 states and 694737 transitions. [2021-12-06 22:26:54,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 22:26:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 409712 states and 694737 transitions. [2021-12-06 22:26:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 22:26:55,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:55,112 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] [2021-12-06 22:26:55,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:26:55,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 22:26:55,314 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 17616092, now seen corresponding path program 1 times [2021-12-06 22:26:55,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:55,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873225438] [2021-12-06 22:26:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:55,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:26:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:26:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:26:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:26:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:26:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:26:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:26:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:26:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:26:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:26:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:26:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:26:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:26:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:26:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:26:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:55,461 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 22:26:55,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:55,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873225438] [2021-12-06 22:26:55,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873225438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:55,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:55,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:26:55,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862363693] [2021-12-06 22:26:55,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:55,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:26:55,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:55,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:26:55,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:26:55,463 INFO L87 Difference]: Start difference. First operand 409712 states and 694737 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:27:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:21,067 INFO L93 Difference]: Finished difference Result 421013 states and 725117 transitions. [2021-12-06 22:27:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 22:27:21,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 145 [2021-12-06 22:27:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:22,722 INFO L225 Difference]: With dead ends: 421013 [2021-12-06 22:27:22,722 INFO L226 Difference]: Without dead ends: 419447 [2021-12-06 22:27:22,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=1398, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 22:27:22,856 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 3779 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 5362 mSolverCounterSat, 2091 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 7453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2091 IncrementalHoareTripleChecker+Valid, 5362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:22,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3779 Valid, 1781 Invalid, 7453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2091 Valid, 5362 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 22:27:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419447 states. [2021-12-06 22:27:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419447 to 414226. [2021-12-06 22:27:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414226 states, 352549 states have (on average 1.5734975847329025) internal successors, (554735), 352286 states have internal predecessors, (554735), 61208 states have call successors, (61208), 374 states have call predecessors, (61208), 468 states have return successors, (85400), 61643 states have call predecessors, (85400), 61180 states have call successors, (85400) [2021-12-06 22:27:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414226 states to 414226 states and 701343 transitions. [2021-12-06 22:27:51,217 INFO L78 Accepts]: Start accepts. Automaton has 414226 states and 701343 transitions. Word has length 145 [2021-12-06 22:27:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:51,218 INFO L470 AbstractCegarLoop]: Abstraction has 414226 states and 701343 transitions. [2021-12-06 22:27:51,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 22:27:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 414226 states and 701343 transitions. [2021-12-06 22:27:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:27:51,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:51,385 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] [2021-12-06 22:27:51,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:27:51,385 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:51,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash -785741447, now seen corresponding path program 1 times [2021-12-06 22:27:51,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:51,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223412654] [2021-12-06 22:27:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:51,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:27:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:27:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:27:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:27:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:27:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:27:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:27:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:27:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:27:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:27:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:27:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:27:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:27:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:51,493 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 22:27:51,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:51,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223412654] [2021-12-06 22:27:51,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223412654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:51,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:51,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 22:27:51,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348093002] [2021-12-06 22:27:51,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:51,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:27:51,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:27:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:27:51,494 INFO L87 Difference]: Start difference. First operand 414226 states and 701343 transitions. Second operand has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 10 states have internal predecessors, (98), 7 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2021-12-06 22:28:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:14,903 INFO L93 Difference]: Finished difference Result 422765 states and 727539 transitions. [2021-12-06 22:28:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 22:28:14,904 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 10 states have internal predecessors, (98), 7 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 146 [2021-12-06 22:28:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:16,497 INFO L225 Difference]: With dead ends: 422765 [2021-12-06 22:28:16,497 INFO L226 Difference]: Without dead ends: 416799 [2021-12-06 22:28:16,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 22:28:16,638 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1541 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 4726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:16,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 3423 Invalid, 4726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 3894 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:28:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416799 states. [2021-12-06 22:28:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416799 to 412705. [2021-12-06 22:28:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412705 states, 351419 states have (on average 1.5741294579974332) internal successors, (553179), 351140 states have internal predecessors, (553179), 60912 states have call successors, (60912), 294 states have call predecessors, (60912), 373 states have return successors, (85053), 61331 states have call predecessors, (85053), 60891 states have call successors, (85053) [2021-12-06 22:28:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412705 states to 412705 states and 699144 transitions. [2021-12-06 22:28:45,167 INFO L78 Accepts]: Start accepts. Automaton has 412705 states and 699144 transitions. Word has length 146 [2021-12-06 22:28:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:45,167 INFO L470 AbstractCegarLoop]: Abstraction has 412705 states and 699144 transitions. [2021-12-06 22:28:45,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 10 states have internal predecessors, (98), 7 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2021-12-06 22:28:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 412705 states and 699144 transitions. [2021-12-06 22:28:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:28:45,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:45,414 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, 1, 1, 1] [2021-12-06 22:28:45,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:28:45,414 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1497122333, now seen corresponding path program 1 times [2021-12-06 22:28:45,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:45,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362131417] [2021-12-06 22:28:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:45,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:28:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:28:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:28:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:28:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:28:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:28:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:28:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:28:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:28:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:28:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:28:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:28:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:28:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:28:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:28:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:28:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:28:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:45,642 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 22:28:45,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362131417] [2021-12-06 22:28:45,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362131417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:45,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:45,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:28:45,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677000382] [2021-12-06 22:28:45,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:45,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:28:45,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:28:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:28:45,644 INFO L87 Difference]: Start difference. First operand 412705 states and 699144 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 22:29:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:19,236 INFO L93 Difference]: Finished difference Result 450956 states and 774895 transitions. [2021-12-06 22:29:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 22:29:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-06 22:29:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:20,932 INFO L225 Difference]: With dead ends: 450956 [2021-12-06 22:29:20,932 INFO L226 Difference]: Without dead ends: 446331 [2021-12-06 22:29:21,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=839, Invalid=2821, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 22:29:21,076 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 2686 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 6326 mSolverCounterSat, 3523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2686 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 9849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3523 IncrementalHoareTripleChecker+Valid, 6326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:21,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2686 Valid, 2301 Invalid, 9849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3523 Valid, 6326 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-06 22:29:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446331 states. [2021-12-06 22:29:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446331 to 412674. [2021-12-06 22:29:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412674 states, 351413 states have (on average 1.5740624279693693) internal successors, (553146), 351137 states have internal predecessors, (553146), 60881 states have call successors, (60881), 294 states have call predecessors, (60881), 379 states have return successors, (85030), 61300 states have call predecessors, (85030), 60860 states have call successors, (85030) [2021-12-06 22:29:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412674 states to 412674 states and 699057 transitions. [2021-12-06 22:29:49,526 INFO L78 Accepts]: Start accepts. Automaton has 412674 states and 699057 transitions. Word has length 155 [2021-12-06 22:29:49,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:49,526 INFO L470 AbstractCegarLoop]: Abstraction has 412674 states and 699057 transitions. [2021-12-06 22:29:49,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 22:29:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 412674 states and 699057 transitions. [2021-12-06 22:29:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:29:49,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:49,909 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, 1, 1] [2021-12-06 22:29:49,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:29:49,909 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1623915047, now seen corresponding path program 1 times [2021-12-06 22:29:49,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:49,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926989481] [2021-12-06 22:29:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:49,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:29:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:29:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:29:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:29:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:29:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:29:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:29:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:29:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:29:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:29:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:29:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:29:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:29:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:29:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:29:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:29:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:29:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,019 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 22:29:50,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:50,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926989481] [2021-12-06 22:29:50,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926989481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:50,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903730016] [2021-12-06 22:29:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:50,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:50,020 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:50,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:29:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:29:50,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:50,301 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 22:29:50,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:29:50,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903730016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:29:50,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:29:50,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2021-12-06 22:29:50,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243249369] [2021-12-06 22:29:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:29:50,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:29:50,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:29:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:29:50,302 INFO L87 Difference]: Start difference. First operand 412674 states and 699057 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 22:30:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:10,820 INFO L93 Difference]: Finished difference Result 416722 states and 704906 transitions. [2021-12-06 22:30:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:30:10,821 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 155 [2021-12-06 22:30:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:12,329 INFO L225 Difference]: With dead ends: 416722 [2021-12-06 22:30:12,329 INFO L226 Difference]: Without dead ends: 412720 [2021-12-06 22:30:12,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:30:12,455 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 185 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:12,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 3672 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:30:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412720 states. [2021-12-06 22:30:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412720 to 412688. [2021-12-06 22:30:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412688 states, 351420 states have (on average 1.5740509931136533) internal successors, (553153), 351151 states have internal predecessors, (553153), 60881 states have call successors, (60881), 294 states have call predecessors, (60881), 386 states have return successors, (85060), 61300 states have call predecessors, (85060), 60860 states have call successors, (85060) [2021-12-06 22:30:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412688 states to 412688 states and 699094 transitions. [2021-12-06 22:30:39,874 INFO L78 Accepts]: Start accepts. Automaton has 412688 states and 699094 transitions. Word has length 155 [2021-12-06 22:30:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:39,874 INFO L470 AbstractCegarLoop]: Abstraction has 412688 states and 699094 transitions. [2021-12-06 22:30:39,874 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 22:30:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 412688 states and 699094 transitions. [2021-12-06 22:30:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:30:40,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:40,268 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, 1, 1] [2021-12-06 22:30:40,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:30:40,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 22:30:40,470 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:30:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash 457218728, now seen corresponding path program 1 times [2021-12-06 22:30:40,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220197219] [2021-12-06 22:30:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:40,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:30:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:30:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:30:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:30:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:30:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:30:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:30:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:30:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:30:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:30:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:30:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:30:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:30:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:30:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:30:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:30:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:30:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,619 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 22:30:40,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:40,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220197219] [2021-12-06 22:30:40,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220197219] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:40,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290283059] [2021-12-06 22:30:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:40,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:40,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:40,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:30:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:40,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:30:40,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:40,993 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 22:30:40,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:30:40,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290283059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:40,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:30:40,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-06 22:30:40,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045755640] [2021-12-06 22:30:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:40,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:30:40,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:30:40,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:30:40,994 INFO L87 Difference]: Start difference. First operand 412688 states and 699094 transitions. Second operand has 13 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 6 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 22:31:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:02,558 INFO L93 Difference]: Finished difference Result 416383 states and 704655 transitions. [2021-12-06 22:31:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:31:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 6 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 155 [2021-12-06 22:31:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:04,119 INFO L225 Difference]: With dead ends: 416383 [2021-12-06 22:31:04,119 INFO L226 Difference]: Without dead ends: 415122 [2021-12-06 22:31:04,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=1500, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 22:31:04,253 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 890 mSDsluCounter, 5488 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 6049 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:04,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 6049 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:31:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415122 states. [2021-12-06 22:31:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415122 to 413576. [2021-12-06 22:31:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413576 states, 352072 states have (on average 1.5736724306391874) internal successors, (554046), 351834 states have internal predecessors, (554046), 61056 states have call successors, (61056), 333 states have call predecessors, (61056), 447 states have return successors, (85330), 61478 states have call predecessors, (85330), 61032 states have call successors, (85330) [2021-12-06 22:31:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413576 states to 413576 states and 700432 transitions. [2021-12-06 22:31:32,944 INFO L78 Accepts]: Start accepts. Automaton has 413576 states and 700432 transitions. Word has length 155 [2021-12-06 22:31:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:32,944 INFO L470 AbstractCegarLoop]: Abstraction has 413576 states and 700432 transitions. [2021-12-06 22:31:32,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 6 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 22:31:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 413576 states and 700432 transitions. [2021-12-06 22:31:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:31:33,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:33,176 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, 1, 1, 1] [2021-12-06 22:31:33,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:31:33,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:33,378 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:31:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:33,379 INFO L85 PathProgramCache]: Analyzing trace with hash 32298870, now seen corresponding path program 1 times [2021-12-06 22:31:33,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:33,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640758389] [2021-12-06 22:31:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:33,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:31:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:31:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:31:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:31:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:31:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:31:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:31:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:31:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:31:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:31:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:31:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:31:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:31:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:31:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:31:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:31:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:31:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,469 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 22:31:33,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:33,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640758389] [2021-12-06 22:31:33,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640758389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:33,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:33,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:31:33,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293208396] [2021-12-06 22:31:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:33,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:31:33,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:31:33,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:31:33,471 INFO L87 Difference]: Start difference. First operand 413576 states and 700432 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 8 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 22:32:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:01,722 INFO L93 Difference]: Finished difference Result 429499 states and 739282 transitions. [2021-12-06 22:32:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 22:32:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 8 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2021-12-06 22:32:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:03,403 INFO L225 Difference]: With dead ends: 429499 [2021-12-06 22:32:03,403 INFO L226 Difference]: Without dead ends: 427038 [2021-12-06 22:32:03,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=443, Invalid=1363, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 22:32:03,541 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 1878 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 4398 mSolverCounterSat, 1460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 5858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1460 IncrementalHoareTripleChecker+Valid, 4398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:03,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 2415 Invalid, 5858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1460 Valid, 4398 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 22:32:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427038 states. [2021-12-06 22:32:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427038 to 411652. [2021-12-06 22:32:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411652 states, 350680 states have (on average 1.5745836660203034) internal successors, (552175), 350379 states have internal predecessors, (552175), 60587 states have call successors, (60587), 309 states have call predecessors, (60587), 384 states have return successors, (84587), 61003 states have call predecessors, (84587), 60563 states have call successors, (84587) [2021-12-06 22:32:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411652 states to 411652 states and 697349 transitions. [2021-12-06 22:32:32,484 INFO L78 Accepts]: Start accepts. Automaton has 411652 states and 697349 transitions. Word has length 155 [2021-12-06 22:32:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:32,484 INFO L470 AbstractCegarLoop]: Abstraction has 411652 states and 697349 transitions. [2021-12-06 22:32:32,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 8 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 22:32:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 411652 states and 697349 transitions. [2021-12-06 22:32:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 22:32:32,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:32,873 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, 1, 1, 1] [2021-12-06 22:32:32,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 22:32:32,873 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash -659001108, now seen corresponding path program 1 times [2021-12-06 22:32:32,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:32,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559111558] [2021-12-06 22:32:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:32,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:32:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:32:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:32:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:32:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:32:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:32:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:32:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:32:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:32:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:32:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:32:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:32:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:32:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:32:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:32:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:32:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:32:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:32,986 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 22:32:32,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:32,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559111558] [2021-12-06 22:32:32,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559111558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:32:32,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190341044] [2021-12-06 22:32:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:32,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:32,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:32:32,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:32:32,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:32:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:33,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:32:33,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:33,221 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 22:32:33,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:32:33,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190341044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:32:33,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:32:33,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 15 [2021-12-06 22:32:33,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590121552] [2021-12-06 22:32:33,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:32:33,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:32:33,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:33,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:32:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:32:33,223 INFO L87 Difference]: Start difference. First operand 411652 states and 697349 transitions. Second operand has 9 states, 7 states have (on average 15.714285714285714) internal successors, (110), 8 states have internal predecessors, (110), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 22:32:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:53,728 INFO L93 Difference]: Finished difference Result 415021 states and 702052 transitions. [2021-12-06 22:32:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:32:53,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 15.714285714285714) internal successors, (110), 8 states have internal predecessors, (110), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 156 [2021-12-06 22:32:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:55,245 INFO L225 Difference]: With dead ends: 415021 [2021-12-06 22:32:55,245 INFO L226 Difference]: Without dead ends: 411385 [2021-12-06 22:32:55,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:32:55,366 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 187 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:55,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 3672 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:32:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411385 states. [2021-12-06 22:33:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411385 to 411307. [2021-12-06 22:33:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411307 states, 350420 states have (on average 1.5747160550196906) internal successors, (551812), 350112 states have internal predecessors, (551812), 60532 states have call successors, (60532), 286 states have call predecessors, (60532), 354 states have return successors, (84504), 60943 states have call predecessors, (84504), 60510 states have call successors, (84504) [2021-12-06 22:33:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411307 states to 411307 states and 696848 transitions. [2021-12-06 22:33:23,075 INFO L78 Accepts]: Start accepts. Automaton has 411307 states and 696848 transitions. Word has length 156 [2021-12-06 22:33:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:23,075 INFO L470 AbstractCegarLoop]: Abstraction has 411307 states and 696848 transitions. [2021-12-06 22:33:23,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 15.714285714285714) internal successors, (110), 8 states have internal predecessors, (110), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 22:33:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 411307 states and 696848 transitions. [2021-12-06 22:33:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 22:33:23,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:23,741 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, 1, 1] [2021-12-06 22:33:23,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 22:33:23,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:23,944 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1566038477, now seen corresponding path program 1 times [2021-12-06 22:33:23,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:23,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464794419] [2021-12-06 22:33:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:23,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:33:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:33:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:33:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:33:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:33:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:33:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:33:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:33:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:33:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:33:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:33:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:33:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:33:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:33:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:33:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:33:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 22:33:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:33:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 22:33:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 22:33:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,122 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 22:33:24,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:24,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464794419] [2021-12-06 22:33:24,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464794419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:24,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140425736] [2021-12-06 22:33:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:24,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:24,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:24,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:24,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:33:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:33:24,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:24,439 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 22:33:24,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:33:24,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140425736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:33:24,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:33:24,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2021-12-06 22:33:24,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691023825] [2021-12-06 22:33:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:33:24,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:33:24,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:33:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:33:24,440 INFO L87 Difference]: Start difference. First operand 411307 states and 696848 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:33:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:48,201 INFO L93 Difference]: Finished difference Result 810338 states and 1386316 transitions. [2021-12-06 22:33:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:33:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2021-12-06 22:33:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:49,740 INFO L225 Difference]: With dead ends: 810338 [2021-12-06 22:33:49,741 INFO L226 Difference]: Without dead ends: 411339 [2021-12-06 22:33:50,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:33:50,422 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 479 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:50,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1226 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:33:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411339 states. [2021-12-06 22:34:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411339 to 411339. [2021-12-06 22:34:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411339 states, 350448 states have (on average 1.5747157923572113) internal successors, (551856), 350144 states have internal predecessors, (551856), 60532 states have call successors, (60532), 286 states have call predecessors, (60532), 358 states have return successors, (93042), 60943 states have call predecessors, (93042), 60510 states have call successors, (93042) [2021-12-06 22:34:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411339 states to 411339 states and 705430 transitions. [2021-12-06 22:34:18,872 INFO L78 Accepts]: Start accepts. Automaton has 411339 states and 705430 transitions. Word has length 186 [2021-12-06 22:34:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:18,873 INFO L470 AbstractCegarLoop]: Abstraction has 411339 states and 705430 transitions. [2021-12-06 22:34:18,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:34:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 411339 states and 705430 transitions. [2021-12-06 22:34:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 22:34:19,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:19,765 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, 1, 1, 1] [2021-12-06 22:34:19,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:34:19,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce7e2b1-58f4-4b58-a664-609e92cf7572/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-06 22:34:19,966 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:19,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash -513346222, now seen corresponding path program 1 times [2021-12-06 22:34:19,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:19,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193449795] [2021-12-06 22:34:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:19,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:34:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:34:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:34:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:34:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:34:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:34:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:34:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:34:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:34:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:34:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:34:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:34:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:34:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:34:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 22:34:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:34:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:34:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:34:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:34:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 22:34:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,136 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 22:34:20,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:20,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193449795] [2021-12-06 22:34:20,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193449795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:34:20,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:34:20,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 22:34:20,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798228553] [2021-12-06 22:34:20,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:34:20,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 22:34:20,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 22:34:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:34:20,137 INFO L87 Difference]: Start difference. First operand 411339 states and 705430 transitions. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (22), 11 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)