./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product31.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_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/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_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/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_91930c6a-f072-4d58-917f-56e25808ea98/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 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:59:09,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:59:09,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:59:09,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:59:09,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:59:09,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:59:09,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:59:09,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:59:09,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:59:09,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:59:09,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:59:09,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:59:09,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:59:09,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:59:09,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:59:09,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:59:09,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:59:09,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:59:09,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:59:09,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:59:09,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:59:09,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:59:09,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:59:09,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:59:09,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:59:09,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:59:09,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:59:09,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:59:09,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:59:09,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:59:09,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:59:09,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:59:09,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:59:09,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:59:09,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:59:09,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:59:09,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:59:09,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:59:09,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:59:09,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:59:09,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:59:09,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:59:09,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:59:09,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:59:09,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:59:09,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:59:09,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:59:09,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:59:09,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:59:09,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:59:09,496 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:59:09,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:59:09,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:59:09,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:59:09,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:59:09,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:59:09,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:59:09,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:59:09,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:59:09,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:59:09,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:59:09,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:59:09,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:59:09,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:59:09,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:59:09,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:59:09,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:59:09,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:59:09,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:59:09,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:59:09,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:59:09,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:59:09,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:59:09,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:59:09,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:59:09,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:59:09,501 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_91930c6a-f072-4d58-917f-56e25808ea98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 [2021-12-06 22:59:09,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:59:09,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:59:09,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:59:09,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:59:09,719 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:59:09,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2021-12-06 22:59:09,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/data/2f5e71951/c1a14ad73b3e4c42b19fe538c24695b8/FLAG814dc259b [2021-12-06 22:59:10,208 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:59:10,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2021-12-06 22:59:10,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/data/2f5e71951/c1a14ad73b3e4c42b19fe538c24695b8/FLAG814dc259b [2021-12-06 22:59:10,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/data/2f5e71951/c1a14ad73b3e4c42b19fe538c24695b8 [2021-12-06 22:59:10,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:59:10,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:59:10,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:59:10,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:59:10,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:59:10,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497af1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10, skipping insertion in model container [2021-12-06 22:59:10,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:59:10,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:59:10,477 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_91930c6a-f072-4d58-917f-56e25808ea98/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2021-12-06 22:59:10,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:59:10,634 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:59:10,650 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_91930c6a-f072-4d58-917f-56e25808ea98/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2021-12-06 22:59:10,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:59:10,722 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:59:10,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10 WrapperNode [2021-12-06 22:59:10,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:59:10,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:59:10,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:59:10,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:59:10,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,804 INFO L137 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1005 [2021-12-06 22:59:10,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:59:10,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:59:10,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:59:10,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:59:10,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:59:10,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:59:10,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:59:10,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:59:10,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (1/1) ... [2021-12-06 22:59:10,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:59:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:10,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:59:10,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:59:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 22:59:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 22:59:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 22:59:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 22:59:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 22:59:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 22:59:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 22:59:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 22:59:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 22:59:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 22:59:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 22:59:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 22:59:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 22:59:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 22:59:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 22:59:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 22:59:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 22:59:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 22:59:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 22:59:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 22:59:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 22:59:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 22:59:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 22:59:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 22:59:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 22:59:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:59:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 22:59:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 22:59:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 22:59:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 22:59:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 22:59:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 22:59:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 22:59:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 22:59:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 22:59:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 22:59:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 22:59:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 22:59:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 22:59:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 22:59:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 22:59:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 22:59:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 22:59:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 22:59:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 22:59:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 22:59:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:59:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 22:59:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 22:59:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:59:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:59:11,088 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:59:11,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:59:11,549 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:59:11,557 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:59:11,557 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:59:11,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:11 BoogieIcfgContainer [2021-12-06 22:59:11,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:59:11,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:59:11,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:59:11,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:59:11,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:59:10" (1/3) ... [2021-12-06 22:59:11,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fba886f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:59:11, skipping insertion in model container [2021-12-06 22:59:11,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:10" (2/3) ... [2021-12-06 22:59:11,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fba886f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:59:11, skipping insertion in model container [2021-12-06 22:59:11,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:11" (3/3) ... [2021-12-06 22:59:11,565 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2021-12-06 22:59:11,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:59:11,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:59:11,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:59:11,628 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 22:59:11,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:59:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-06 22:59:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 22:59:11,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:11,664 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 22:59:11,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1669286504, now seen corresponding path program 1 times [2021-12-06 22:59:11,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:11,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179469452] [2021-12-06 22:59:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:11,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:59:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:59:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:59:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:59:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:59:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:59:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:59:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:59:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:59:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:59:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:59:12,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:12,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179469452] [2021-12-06 22:59:12,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179469452] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:12,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838045328] [2021-12-06 22:59:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:12,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:12,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:12,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:12,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:59:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:59:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:59:12,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:12,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838045328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:12,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:12,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 22:59:12,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225043111] [2021-12-06 22:59:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:12,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:59:12,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:59:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:59:12,415 INFO L87 Difference]: Start difference. First operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:12,469 INFO L93 Difference]: Finished difference Result 578 states and 836 transitions. [2021-12-06 22:59:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:59:12,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2021-12-06 22:59:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:12,486 INFO L225 Difference]: With dead ends: 578 [2021-12-06 22:59:12,486 INFO L226 Difference]: Without dead ends: 359 [2021-12-06 22:59:12,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 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 22:59:12,494 INFO L933 BasicCegarLoop]: 537 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, 537 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 22:59:12,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-06 22:59:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2021-12-06 22:59:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.4945848375451263) internal successors, (414), 280 states have internal predecessors, (414), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-06 22:59:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 529 transitions. [2021-12-06 22:59:12,554 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 529 transitions. Word has length 120 [2021-12-06 22:59:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:12,555 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 529 transitions. [2021-12-06 22:59:12,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 529 transitions. [2021-12-06 22:59:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 22:59:12,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:12,565 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 22:59:12,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:59:12,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:12,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1463241793, now seen corresponding path program 1 times [2021-12-06 22:59:12,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:12,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251591153] [2021-12-06 22:59:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:12,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:59:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:59:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:59:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:59:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:59:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:59:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:59:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:59:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:59:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:59:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:59:12,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:12,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251591153] [2021-12-06 22:59:12,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251591153] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671776704] [2021-12-06 22:59:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:12,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:12,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:12,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:59:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:59:13,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:59:13,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:13,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671776704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:13,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:13,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:59:13,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000092055] [2021-12-06 22:59:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:13,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:59:13,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:59:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:59:13,275 INFO L87 Difference]: Start difference. First operand 359 states and 529 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:13,303 INFO L93 Difference]: Finished difference Result 568 states and 817 transitions. [2021-12-06 22:59:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:59:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2021-12-06 22:59:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:13,307 INFO L225 Difference]: With dead ends: 568 [2021-12-06 22:59:13,307 INFO L226 Difference]: Without dead ends: 362 [2021-12-06 22:59:13,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 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 22:59:13,309 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1052 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 22:59:13,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1052 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-06 22:59:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2021-12-06 22:59:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.4910394265232976) internal successors, (416), 282 states have internal predecessors, (416), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-06 22:59:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 531 transitions. [2021-12-06 22:59:13,331 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 531 transitions. Word has length 121 [2021-12-06 22:59:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:13,332 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 531 transitions. [2021-12-06 22:59:13,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 531 transitions. [2021-12-06 22:59:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:59:13,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:13,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 22:59:13,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:59:13,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:13,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash 473633432, now seen corresponding path program 1 times [2021-12-06 22:59:13,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:13,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339884492] [2021-12-06 22:59:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:13,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:59:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:59:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:59:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:59:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:59:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:59:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:59:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:59:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:59:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:59:13,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:13,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339884492] [2021-12-06 22:59:13,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339884492] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:13,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575630783] [2021-12-06 22:59:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:13,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:13,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:13,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:13,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:59:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:59:13,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:59:14,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:14,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575630783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:14,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:14,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:59:14,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993729352] [2021-12-06 22:59:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:14,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:59:14,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:59:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:59:14,054 INFO L87 Difference]: Start difference. First operand 361 states and 531 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:14,078 INFO L93 Difference]: Finished difference Result 752 states and 1121 transitions. [2021-12-06 22:59:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:59:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-12-06 22:59:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:14,081 INFO L225 Difference]: With dead ends: 752 [2021-12-06 22:59:14,081 INFO L226 Difference]: Without dead ends: 418 [2021-12-06 22:59:14,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 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 22:59:14,084 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 107 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1037 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 22:59:14,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1037 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-06 22:59:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 410. [2021-12-06 22:59:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 317 states have (on average 1.5078864353312302) internal successors, (478), 320 states have internal predecessors, (478), 69 states have call successors, (69), 23 states have call predecessors, (69), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-06 22:59:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2021-12-06 22:59:14,103 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 127 [2021-12-06 22:59:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:14,104 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2021-12-06 22:59:14,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2021-12-06 22:59:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 22:59:14,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:14,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:14,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:59:14,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:14,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:14,310 INFO L85 PathProgramCache]: Analyzing trace with hash -179272271, now seen corresponding path program 1 times [2021-12-06 22:59:14,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:14,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164753495] [2021-12-06 22:59:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:14,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:59:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:59:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:59:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:59:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:59:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:59:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:59:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:59:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:59:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:59:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:59:14,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:14,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164753495] [2021-12-06 22:59:14,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164753495] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:14,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589526283] [2021-12-06 22:59:14,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:14,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:14,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:14,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:14,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:59:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:14,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:59:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:59:14,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:14,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589526283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:14,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:14,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:59:14,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873794877] [2021-12-06 22:59:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:14,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:59:14,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:59:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:14,853 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:14,918 INFO L93 Difference]: Finished difference Result 811 states and 1220 transitions. [2021-12-06 22:59:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:59:14,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2021-12-06 22:59:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:14,922 INFO L225 Difference]: With dead ends: 811 [2021-12-06 22:59:14,923 INFO L226 Difference]: Without dead ends: 412 [2021-12-06 22:59:14,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 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 22:59:14,926 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 125 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1936 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 22:59:14,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1936 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-06 22:59:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-12-06 22:59:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 318 states have (on average 1.5062893081761006) internal successors, (479), 322 states have internal predecessors, (479), 69 states have call successors, (69), 23 states have call predecessors, (69), 24 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2021-12-06 22:59:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 618 transitions. [2021-12-06 22:59:14,955 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 618 transitions. Word has length 128 [2021-12-06 22:59:14,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:14,955 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 618 transitions. [2021-12-06 22:59:14,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 618 transitions. [2021-12-06 22:59:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 22:59:14,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:14,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:14,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:59:15,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:15,161 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash -580569720, now seen corresponding path program 1 times [2021-12-06 22:59:15,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996213457] [2021-12-06 22:59:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:15,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:59:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:59:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:59:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:59:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:59:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:59:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:59:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:59:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:59:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:59:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:59:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:59:15,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:15,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996213457] [2021-12-06 22:59:15,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996213457] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:15,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662701807] [2021-12-06 22:59:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:15,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:15,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:15,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:59:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:15,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:59:15,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:59:15,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:15,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662701807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:15,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:15,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:59:15,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438850234] [2021-12-06 22:59:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:15,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:59:15,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:15,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:59:15,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:59:15,694 INFO L87 Difference]: Start difference. First operand 412 states and 618 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:15,743 INFO L93 Difference]: Finished difference Result 813 states and 1225 transitions. [2021-12-06 22:59:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:59:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2021-12-06 22:59:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:15,746 INFO L225 Difference]: With dead ends: 813 [2021-12-06 22:59:15,746 INFO L226 Difference]: Without dead ends: 414 [2021-12-06 22:59:15,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 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 22:59:15,748 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 124 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1925 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 22:59:15,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1925 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-12-06 22:59:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2021-12-06 22:59:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 319 states have (on average 1.5047021943573669) internal successors, (480), 324 states have internal predecessors, (480), 69 states have call successors, (69), 23 states have call predecessors, (69), 25 states have return successors, (75), 68 states have call predecessors, (75), 68 states have call successors, (75) [2021-12-06 22:59:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 624 transitions. [2021-12-06 22:59:15,765 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 624 transitions. Word has length 129 [2021-12-06 22:59:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:15,765 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 624 transitions. [2021-12-06 22:59:15,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 624 transitions. [2021-12-06 22:59:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 22:59:15,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:15,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 22:59:15,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:59:15,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:15,968 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:15,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2124784056, now seen corresponding path program 1 times [2021-12-06 22:59:15,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:15,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035265525] [2021-12-06 22:59:15,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:15,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:59:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:59:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:59:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:59:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:59:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:59:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:59:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:59:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:59:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:59:16,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035265525] [2021-12-06 22:59:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035265525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:16,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:16,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:59:16,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760008865] [2021-12-06 22:59:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:59:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:59:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:59:16,074 INFO L87 Difference]: Start difference. First operand 414 states and 624 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:17,287 INFO L93 Difference]: Finished difference Result 987 states and 1486 transitions. [2021-12-06 22:59:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:59:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2021-12-06 22:59:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:17,294 INFO L225 Difference]: With dead ends: 987 [2021-12-06 22:59:17,294 INFO L226 Difference]: Without dead ends: 596 [2021-12-06 22:59:17,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 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 22:59:17,297 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1458 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:17,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 1649 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:59:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-06 22:59:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 414. [2021-12-06 22:59:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 319 states have (on average 1.5047021943573669) internal successors, (480), 324 states have internal predecessors, (480), 69 states have call successors, (69), 23 states have call predecessors, (69), 25 states have return successors, (74), 68 states have call predecessors, (74), 68 states have call successors, (74) [2021-12-06 22:59:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 623 transitions. [2021-12-06 22:59:17,340 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 623 transitions. Word has length 130 [2021-12-06 22:59:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:17,340 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 623 transitions. [2021-12-06 22:59:17,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 623 transitions. [2021-12-06 22:59:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 22:59:17,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:17,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:17,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:59:17,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash 657226353, now seen corresponding path program 2 times [2021-12-06 22:59:17,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:17,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434438097] [2021-12-06 22:59:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:17,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:59:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:59:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:59:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:59:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:59:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:59:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:59:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:59:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:59:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:59:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:59:17,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:17,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434438097] [2021-12-06 22:59:17,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434438097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:17,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:17,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:59:17,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589482113] [2021-12-06 22:59:17,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:17,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:59:17,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:59:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:59:17,468 INFO L87 Difference]: Start difference. First operand 414 states and 623 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:18,665 INFO L93 Difference]: Finished difference Result 989 states and 1489 transitions. [2021-12-06 22:59:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:59:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2021-12-06 22:59:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:18,671 INFO L225 Difference]: With dead ends: 989 [2021-12-06 22:59:18,671 INFO L226 Difference]: Without dead ends: 598 [2021-12-06 22:59:18,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 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 22:59:18,674 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1310 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:18,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 1719 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:59:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-06 22:59:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 416. [2021-12-06 22:59:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.503125) internal successors, (481), 326 states have internal predecessors, (481), 69 states have call successors, (69), 23 states have call predecessors, (69), 26 states have return successors, (76), 68 states have call predecessors, (76), 68 states have call successors, (76) [2021-12-06 22:59:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 626 transitions. [2021-12-06 22:59:18,724 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 626 transitions. Word has length 131 [2021-12-06 22:59:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:18,724 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 626 transitions. [2021-12-06 22:59:18,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 626 transitions. [2021-12-06 22:59:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 22:59:18,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:18,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 22:59:18,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:59:18,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash -234250189, now seen corresponding path program 1 times [2021-12-06 22:59:18,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:18,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422813378] [2021-12-06 22:59:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:18,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:59:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:59:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:59:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:59:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:59:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:59:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:59:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:59:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:59:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:59:18,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:18,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422813378] [2021-12-06 22:59:18,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422813378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:18,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:18,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:59:18,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548205915] [2021-12-06 22:59:18,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:18,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:59:18,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:59:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:18,843 INFO L87 Difference]: Start difference. First operand 416 states and 626 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:59:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:20,235 INFO L93 Difference]: Finished difference Result 987 states and 1484 transitions. [2021-12-06 22:59:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:59:20,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 132 [2021-12-06 22:59:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:20,239 INFO L225 Difference]: With dead ends: 987 [2021-12-06 22:59:20,239 INFO L226 Difference]: Without dead ends: 598 [2021-12-06 22:59:20,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 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 22:59:20,241 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1563 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:20,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 2170 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 22:59:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-06 22:59:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 416. [2021-12-06 22:59:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.503125) internal successors, (481), 326 states have internal predecessors, (481), 69 states have call successors, (69), 23 states have call predecessors, (69), 26 states have return successors, (75), 68 states have call predecessors, (75), 68 states have call successors, (75) [2021-12-06 22:59:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 625 transitions. [2021-12-06 22:59:20,263 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 625 transitions. Word has length 132 [2021-12-06 22:59:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:20,263 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 625 transitions. [2021-12-06 22:59:20,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:59:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 625 transitions. [2021-12-06 22:59:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 22:59:20,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:20,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:20,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:59:20,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash -273473343, now seen corresponding path program 2 times [2021-12-06 22:59:20,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:20,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829777096] [2021-12-06 22:59:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:20,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:59:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:59:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:59:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:59:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:59:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:59:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:59:20,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:20,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829777096] [2021-12-06 22:59:20,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829777096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:20,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:20,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:59:20,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9970679] [2021-12-06 22:59:20,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:20,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:59:20,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:59:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:20,387 INFO L87 Difference]: Start difference. First operand 416 states and 625 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:59:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:21,704 INFO L93 Difference]: Finished difference Result 989 states and 1490 transitions. [2021-12-06 22:59:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:59:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 133 [2021-12-06 22:59:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:21,708 INFO L225 Difference]: With dead ends: 989 [2021-12-06 22:59:21,708 INFO L226 Difference]: Without dead ends: 600 [2021-12-06 22:59:21,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:59:21,710 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1486 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 3463 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 4062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 3463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:21,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 2182 Invalid, 4062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 3463 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:59:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-06 22:59:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 418. [2021-12-06 22:59:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 321 states have (on average 1.5015576323987538) internal successors, (482), 328 states have internal predecessors, (482), 69 states have call successors, (69), 23 states have call predecessors, (69), 27 states have return successors, (80), 68 states have call predecessors, (80), 68 states have call successors, (80) [2021-12-06 22:59:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 631 transitions. [2021-12-06 22:59:21,734 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 631 transitions. Word has length 133 [2021-12-06 22:59:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:21,735 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 631 transitions. [2021-12-06 22:59:21,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:59:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 631 transitions. [2021-12-06 22:59:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:59:21,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:21,737 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 22:59:21,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:59:21,737 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:21,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash 785362892, now seen corresponding path program 1 times [2021-12-06 22:59:21,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847132684] [2021-12-06 22:59:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:21,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:59:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:59:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:59:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:59:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:59:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:59:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:59:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:59:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 22:59:21,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847132684] [2021-12-06 22:59:21,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847132684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:21,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:21,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:59:21,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50723819] [2021-12-06 22:59:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:21,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:59:21,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:59:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:59:21,840 INFO L87 Difference]: Start difference. First operand 418 states and 631 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:22,814 INFO L93 Difference]: Finished difference Result 991 states and 1493 transitions. [2021-12-06 22:59:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:59:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-06 22:59:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:22,817 INFO L225 Difference]: With dead ends: 991 [2021-12-06 22:59:22,817 INFO L226 Difference]: Without dead ends: 600 [2021-12-06 22:59:22,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:59:22,819 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1399 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:22,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1700 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:59:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-06 22:59:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 418. [2021-12-06 22:59:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 321 states have (on average 1.5015576323987538) internal successors, (482), 328 states have internal predecessors, (482), 69 states have call successors, (69), 23 states have call predecessors, (69), 27 states have return successors, (80), 68 states have call predecessors, (80), 68 states have call successors, (80) [2021-12-06 22:59:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 631 transitions. [2021-12-06 22:59:22,841 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 631 transitions. Word has length 134 [2021-12-06 22:59:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:22,842 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 631 transitions. [2021-12-06 22:59:22,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 631 transitions. [2021-12-06 22:59:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:59:22,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:22,843 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 22:59:22,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:59:22,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1091700338, now seen corresponding path program 1 times [2021-12-06 22:59:22,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:22,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263390598] [2021-12-06 22:59:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:22,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:59:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:59:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:59:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:59:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:59:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:59:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:59:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:59:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:22,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:22,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263390598] [2021-12-06 22:59:22,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263390598] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:22,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963552601] [2021-12-06 22:59:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:22,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:22,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:22,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:59:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:23,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:59:23,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:23,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:59:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:23,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963552601] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:59:23,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:59:23,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-06 22:59:23,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225658735] [2021-12-06 22:59:23,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:59:23,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:59:23,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:59:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:59:23,339 INFO L87 Difference]: Start difference. First operand 418 states and 631 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (37), 6 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 22:59:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:24,530 INFO L93 Difference]: Finished difference Result 1158 states and 1817 transitions. [2021-12-06 22:59:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:59:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (37), 6 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 134 [2021-12-06 22:59:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:24,536 INFO L225 Difference]: With dead ends: 1158 [2021-12-06 22:59:24,536 INFO L226 Difference]: Without dead ends: 952 [2021-12-06 22:59:24,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:59:24,538 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1638 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:24,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 2364 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:59:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-12-06 22:59:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 746. [2021-12-06 22:59:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 585 states have (on average 1.5726495726495726) internal successors, (920), 592 states have internal predecessors, (920), 133 states have call successors, (133), 23 states have call predecessors, (133), 27 states have return successors, (154), 132 states have call predecessors, (154), 132 states have call successors, (154) [2021-12-06 22:59:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1207 transitions. [2021-12-06 22:59:24,578 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1207 transitions. Word has length 134 [2021-12-06 22:59:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:24,578 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1207 transitions. [2021-12-06 22:59:24,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (37), 6 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 22:59:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1207 transitions. [2021-12-06 22:59:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 22:59:24,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:24,582 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:24,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:59:24,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:24,783 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1782811473, now seen corresponding path program 1 times [2021-12-06 22:59:24,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:24,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838454056] [2021-12-06 22:59:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:24,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:59:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:59:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:59:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:59:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:59:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:59:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:59:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:59:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:59:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:24,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:24,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838454056] [2021-12-06 22:59:24,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838454056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:24,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:24,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:24,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759094540] [2021-12-06 22:59:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:24,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:24,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:24,861 INFO L87 Difference]: Start difference. First operand 746 states and 1207 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:25,672 INFO L93 Difference]: Finished difference Result 1939 states and 3188 transitions. [2021-12-06 22:59:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:25,673 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2021-12-06 22:59:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:25,680 INFO L225 Difference]: With dead ends: 1939 [2021-12-06 22:59:25,680 INFO L226 Difference]: Without dead ends: 1261 [2021-12-06 22:59:25,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:25,683 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1391 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:25,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1406 Valid, 1436 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:59:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-12-06 22:59:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1071. [2021-12-06 22:59:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 846 states have (on average 1.5898345153664302) internal successors, (1345), 853 states have internal predecessors, (1345), 197 states have call successors, (197), 23 states have call predecessors, (197), 27 states have return successors, (228), 196 states have call predecessors, (228), 196 states have call successors, (228) [2021-12-06 22:59:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1770 transitions. [2021-12-06 22:59:25,745 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1770 transitions. Word has length 140 [2021-12-06 22:59:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:25,746 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1770 transitions. [2021-12-06 22:59:25,746 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1770 transitions. [2021-12-06 22:59:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 22:59:25,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:25,751 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:25,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:59:25,752 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2052921179, now seen corresponding path program 1 times [2021-12-06 22:59:25,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308901364] [2021-12-06 22:59:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:25,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:59:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:59:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:59:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:59:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:59:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:59:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:59:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:59:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:25,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:25,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308901364] [2021-12-06 22:59:25,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308901364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:25,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:25,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:25,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856454736] [2021-12-06 22:59:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:25,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:25,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:25,830 INFO L87 Difference]: Start difference. First operand 1071 states and 1770 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:26,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:26,768 INFO L93 Difference]: Finished difference Result 2719 states and 4537 transitions. [2021-12-06 22:59:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:26,768 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2021-12-06 22:59:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:26,777 INFO L225 Difference]: With dead ends: 2719 [2021-12-06 22:59:26,777 INFO L226 Difference]: Without dead ends: 1769 [2021-12-06 22:59:26,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:26,780 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1383 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:26,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 1394 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:59:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-12-06 22:59:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1579. [2021-12-06 22:59:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1259 states have (on average 1.6012708498808579) internal successors, (2016), 1266 states have internal predecessors, (2016), 292 states have call successors, (292), 23 states have call predecessors, (292), 27 states have return successors, (323), 291 states have call predecessors, (323), 291 states have call successors, (323) [2021-12-06 22:59:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2631 transitions. [2021-12-06 22:59:26,857 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2631 transitions. Word has length 141 [2021-12-06 22:59:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:26,858 INFO L470 AbstractCegarLoop]: Abstraction has 1579 states and 2631 transitions. [2021-12-06 22:59:26,858 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2631 transitions. [2021-12-06 22:59:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 22:59:26,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:26,865 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:26,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:59:26,866 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1588518801, now seen corresponding path program 1 times [2021-12-06 22:59:26,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:26,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582251852] [2021-12-06 22:59:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:26,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:59:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:59:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:59:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:59:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:59:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:59:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:59:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:59:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:59:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:26,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582251852] [2021-12-06 22:59:26,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582251852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:26,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:26,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:26,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21759964] [2021-12-06 22:59:26,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:26,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:26,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:26,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:26,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:26,959 INFO L87 Difference]: Start difference. First operand 1579 states and 2631 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:27,858 INFO L93 Difference]: Finished difference Result 3871 states and 6546 transitions. [2021-12-06 22:59:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:27,858 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2021-12-06 22:59:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:27,871 INFO L225 Difference]: With dead ends: 3871 [2021-12-06 22:59:27,871 INFO L226 Difference]: Without dead ends: 2538 [2021-12-06 22:59:27,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:27,875 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1351 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:27,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 1392 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:59:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-12-06 22:59:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2348. [2021-12-06 22:59:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 1905 states have (on average 1.6099737532808398) internal successors, (3067), 1912 states have internal predecessors, (3067), 415 states have call successors, (415), 23 states have call predecessors, (415), 27 states have return successors, (462), 414 states have call predecessors, (462), 414 states have call successors, (462) [2021-12-06 22:59:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3944 transitions. [2021-12-06 22:59:27,988 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3944 transitions. Word has length 142 [2021-12-06 22:59:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:27,988 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 3944 transitions. [2021-12-06 22:59:27,988 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3944 transitions. [2021-12-06 22:59:27,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 22:59:27,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:27,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:27,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:59:27,999 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2042299878, now seen corresponding path program 1 times [2021-12-06 22:59:27,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:27,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566117382] [2021-12-06 22:59:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:27,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:59:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:59:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:59:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:59:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:59:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:59:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:59:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:59:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:28,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:28,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566117382] [2021-12-06 22:59:28,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566117382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:28,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:28,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:28,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711680986] [2021-12-06 22:59:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:28,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:28,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:28,074 INFO L87 Difference]: Start difference. First operand 2348 states and 3944 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:29,032 INFO L93 Difference]: Finished difference Result 5665 states and 9680 transitions. [2021-12-06 22:59:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:29,033 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2021-12-06 22:59:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:29,052 INFO L225 Difference]: With dead ends: 5665 [2021-12-06 22:59:29,053 INFO L226 Difference]: Without dead ends: 3767 [2021-12-06 22:59:29,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:29,058 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1359 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:29,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 1417 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:59:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-12-06 22:59:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3577. [2021-12-06 22:59:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 2955 states have (on average 1.6155668358714044) internal successors, (4774), 2962 states have internal predecessors, (4774), 594 states have call successors, (594), 23 states have call predecessors, (594), 27 states have return successors, (667), 593 states have call predecessors, (667), 593 states have call successors, (667) [2021-12-06 22:59:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 6035 transitions. [2021-12-06 22:59:29,226 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 6035 transitions. Word has length 143 [2021-12-06 22:59:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:29,226 INFO L470 AbstractCegarLoop]: Abstraction has 3577 states and 6035 transitions. [2021-12-06 22:59:29,227 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 6035 transitions. [2021-12-06 22:59:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 22:59:29,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:29,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:29,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:59:29,238 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:29,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1346525747, now seen corresponding path program 1 times [2021-12-06 22:59:29,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:29,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746584536] [2021-12-06 22:59:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:29,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:59:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:59:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:59:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:59:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:59:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:59:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:59:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:59:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:29,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:29,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746584536] [2021-12-06 22:59:29,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746584536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:29,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:29,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:29,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417905183] [2021-12-06 22:59:29,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:29,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:29,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:29,331 INFO L87 Difference]: Start difference. First operand 3577 states and 6035 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:30,313 INFO L93 Difference]: Finished difference Result 8613 states and 14827 transitions. [2021-12-06 22:59:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:30,313 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2021-12-06 22:59:30,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:30,344 INFO L225 Difference]: With dead ends: 8613 [2021-12-06 22:59:30,344 INFO L226 Difference]: Without dead ends: 5798 [2021-12-06 22:59:30,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:30,352 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1444 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:30,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1459 Valid, 1382 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:59:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2021-12-06 22:59:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5608. [2021-12-06 22:59:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5608 states, 4610 states have (on average 1.6108459869848155) internal successors, (7426), 4617 states have internal predecessors, (7426), 970 states have call successors, (970), 23 states have call predecessors, (970), 27 states have return successors, (1087), 969 states have call predecessors, (1087), 969 states have call successors, (1087) [2021-12-06 22:59:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5608 states to 5608 states and 9483 transitions. [2021-12-06 22:59:30,618 INFO L78 Accepts]: Start accepts. Automaton has 5608 states and 9483 transitions. Word has length 144 [2021-12-06 22:59:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:30,618 INFO L470 AbstractCegarLoop]: Abstraction has 5608 states and 9483 transitions. [2021-12-06 22:59:30,619 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5608 states and 9483 transitions. [2021-12-06 22:59:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 22:59:30,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:30,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:30,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:59:30,636 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:30,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1103700906, now seen corresponding path program 1 times [2021-12-06 22:59:30,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:30,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306210011] [2021-12-06 22:59:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:30,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:59:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:59:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:59:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:59:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:59:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:59:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:59:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:59:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:30,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306210011] [2021-12-06 22:59:30,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306210011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:30,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:30,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:30,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531565116] [2021-12-06 22:59:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:30,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:30,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:30,714 INFO L87 Difference]: Start difference. First operand 5608 states and 9483 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:31,778 INFO L93 Difference]: Finished difference Result 13950 states and 24048 transitions. [2021-12-06 22:59:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:31,779 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-06 22:59:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:31,813 INFO L225 Difference]: With dead ends: 13950 [2021-12-06 22:59:31,813 INFO L226 Difference]: Without dead ends: 9481 [2021-12-06 22:59:31,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:31,824 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1363 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:31,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 1395 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:59:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2021-12-06 22:59:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 9291. [2021-12-06 22:59:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9291 states, 7687 states have (on average 1.6094705346689215) internal successors, (12372), 7694 states have internal predecessors, (12372), 1576 states have call successors, (1576), 23 states have call predecessors, (1576), 27 states have return successors, (1771), 1575 states have call predecessors, (1771), 1575 states have call successors, (1771) [2021-12-06 22:59:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 15719 transitions. [2021-12-06 22:59:32,258 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 15719 transitions. Word has length 145 [2021-12-06 22:59:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:32,259 INFO L470 AbstractCegarLoop]: Abstraction has 9291 states and 15719 transitions. [2021-12-06 22:59:32,259 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 15719 transitions. [2021-12-06 22:59:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:59:32,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:32,283 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:32,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:59:32,283 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash 97277061, now seen corresponding path program 1 times [2021-12-06 22:59:32,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:32,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877656806] [2021-12-06 22:59:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:32,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:59:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:59:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:59:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:59:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:59:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:59:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:59:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:59:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:59:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:32,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:32,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877656806] [2021-12-06 22:59:32,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877656806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:32,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:32,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:32,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352988701] [2021-12-06 22:59:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:32,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:32,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:32,352 INFO L87 Difference]: Start difference. First operand 9291 states and 15719 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:33,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:33,711 INFO L93 Difference]: Finished difference Result 24134 states and 41594 transitions. [2021-12-06 22:59:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:33,711 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2021-12-06 22:59:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:33,764 INFO L225 Difference]: With dead ends: 24134 [2021-12-06 22:59:33,764 INFO L226 Difference]: Without dead ends: 16434 [2021-12-06 22:59:33,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:33,781 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1373 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:33,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 1418 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:59:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16434 states. [2021-12-06 22:59:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16434 to 16244. [2021-12-06 22:59:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16244 states, 13437 states have (on average 1.6011014363325147) internal successors, (21514), 13444 states have internal predecessors, (21514), 2779 states have call successors, (2779), 23 states have call predecessors, (2779), 27 states have return successors, (3118), 2778 states have call predecessors, (3118), 2778 states have call successors, (3118) [2021-12-06 22:59:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16244 states to 16244 states and 27411 transitions. [2021-12-06 22:59:34,432 INFO L78 Accepts]: Start accepts. Automaton has 16244 states and 27411 transitions. Word has length 146 [2021-12-06 22:59:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:34,433 INFO L470 AbstractCegarLoop]: Abstraction has 16244 states and 27411 transitions. [2021-12-06 22:59:34,433 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 16244 states and 27411 transitions. [2021-12-06 22:59:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 22:59:34,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:34,458 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:34,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:59:34,459 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1006410229, now seen corresponding path program 1 times [2021-12-06 22:59:34,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:34,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831019971] [2021-12-06 22:59:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:34,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:59:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:59:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:59:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:59:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:59:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:59:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:59:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:59:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:59:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:34,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:34,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831019971] [2021-12-06 22:59:34,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831019971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:34,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:34,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:34,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409918483] [2021-12-06 22:59:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:34,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:34,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:34,532 INFO L87 Difference]: Start difference. First operand 16244 states and 27411 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:36,362 INFO L93 Difference]: Finished difference Result 43100 states and 74193 transitions. [2021-12-06 22:59:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:36,363 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2021-12-06 22:59:36,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:36,438 INFO L225 Difference]: With dead ends: 43100 [2021-12-06 22:59:36,438 INFO L226 Difference]: Without dead ends: 29089 [2021-12-06 22:59:36,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:36,460 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1401 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:36,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1367 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:59:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29089 states. [2021-12-06 22:59:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29089 to 28899. [2021-12-06 22:59:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28899 states, 24053 states have (on average 1.5972227996507713) internal successors, (38418), 24060 states have internal predecessors, (38418), 4818 states have call successors, (4818), 23 states have call predecessors, (4818), 27 states have return successors, (5431), 4817 states have call predecessors, (5431), 4817 states have call successors, (5431) [2021-12-06 22:59:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28899 states to 28899 states and 48667 transitions. [2021-12-06 22:59:37,770 INFO L78 Accepts]: Start accepts. Automaton has 28899 states and 48667 transitions. Word has length 147 [2021-12-06 22:59:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:37,771 INFO L470 AbstractCegarLoop]: Abstraction has 28899 states and 48667 transitions. [2021-12-06 22:59:37,771 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 28899 states and 48667 transitions. [2021-12-06 22:59:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 22:59:37,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:37,802 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:37,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:59:37,802 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash -875768605, now seen corresponding path program 1 times [2021-12-06 22:59:37,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:37,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479936535] [2021-12-06 22:59:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:37,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:59:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:59:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:59:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:59:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:59:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:59:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:59:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:59:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:37,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:37,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479936535] [2021-12-06 22:59:37,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479936535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:37,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:37,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:37,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528614174] [2021-12-06 22:59:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:37,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:37,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:37,878 INFO L87 Difference]: Start difference. First operand 28899 states and 48667 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:40,664 INFO L93 Difference]: Finished difference Result 78862 states and 134952 transitions. [2021-12-06 22:59:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:40,664 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2021-12-06 22:59:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:40,797 INFO L225 Difference]: With dead ends: 78862 [2021-12-06 22:59:40,797 INFO L226 Difference]: Without dead ends: 52968 [2021-12-06 22:59:40,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:40,835 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1427 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:40,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 1395 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:59:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52968 states. [2021-12-06 22:59:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52968 to 52778. [2021-12-06 22:59:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52778 states, 44217 states have (on average 1.5918538118823078) internal successors, (70387), 44224 states have internal predecessors, (70387), 8533 states have call successors, (8533), 23 states have call predecessors, (8533), 27 states have return successors, (9678), 8532 states have call predecessors, (9678), 8532 states have call successors, (9678) [2021-12-06 22:59:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52778 states to 52778 states and 88598 transitions. [2021-12-06 22:59:42,989 INFO L78 Accepts]: Start accepts. Automaton has 52778 states and 88598 transitions. Word has length 148 [2021-12-06 22:59:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:42,990 INFO L470 AbstractCegarLoop]: Abstraction has 52778 states and 88598 transitions. [2021-12-06 22:59:42,990 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 52778 states and 88598 transitions. [2021-12-06 22:59:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:59:43,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:43,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:43,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:59:43,030 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash -929026731, now seen corresponding path program 1 times [2021-12-06 22:59:43,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:43,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040315089] [2021-12-06 22:59:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:43,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:59:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:59:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:59:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:59:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:59:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:59:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:59:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:59:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:59:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:59:43,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:43,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040315089] [2021-12-06 22:59:43,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040315089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:43,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:43,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:43,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801157143] [2021-12-06 22:59:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:43,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:43,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:43,102 INFO L87 Difference]: Start difference. First operand 52778 states and 88598 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:47,166 INFO L93 Difference]: Finished difference Result 98633 states and 169139 transitions. [2021-12-06 22:59:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2021-12-06 22:59:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:47,450 INFO L225 Difference]: With dead ends: 98633 [2021-12-06 22:59:47,450 INFO L226 Difference]: Without dead ends: 98427 [2021-12-06 22:59:47,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 22:59:47,488 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1348 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:47,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 1417 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:59:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98427 states. [2021-12-06 22:59:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98427 to 98237. [2021-12-06 22:59:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98237 states, 82877 states have (on average 1.5849632588052174) internal successors, (131357), 82884 states have internal predecessors, (131357), 15332 states have call successors, (15332), 23 states have call predecessors, (15332), 27 states have return successors, (17523), 15331 states have call predecessors, (17523), 15331 states have call successors, (17523) [2021-12-06 22:59:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98237 states to 98237 states and 164212 transitions. [2021-12-06 22:59:51,867 INFO L78 Accepts]: Start accepts. Automaton has 98237 states and 164212 transitions. Word has length 149 [2021-12-06 22:59:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:51,867 INFO L470 AbstractCegarLoop]: Abstraction has 98237 states and 164212 transitions. [2021-12-06 22:59:51,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 98237 states and 164212 transitions. [2021-12-06 22:59:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:59:51,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:51,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:51,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:59:51,928 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1637309380, now seen corresponding path program 1 times [2021-12-06 22:59:51,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:51,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287571113] [2021-12-06 22:59:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:51,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:59:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:59:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:59:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:59:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:59:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:59:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:59:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:59:52,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287571113] [2021-12-06 22:59:52,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287571113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103327159] [2021-12-06 22:59:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:52,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:52,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:52,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:52,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:59:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:59:52,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:59:52,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:59:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:59:52,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103327159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:59:52,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:59:52,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-06 22:59:52,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721290503] [2021-12-06 22:59:52,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:59:52,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 22:59:52,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 22:59:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:59:52,753 INFO L87 Difference]: Start difference. First operand 98237 states and 164212 transitions. Second operand has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2021-12-06 23:00:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:00:25,875 INFO L93 Difference]: Finished difference Result 394471 states and 691516 transitions. [2021-12-06 23:00:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-12-06 23:00:25,875 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) Word has length 150 [2021-12-06 23:00:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:00:27,491 INFO L225 Difference]: With dead ends: 394471 [2021-12-06 23:00:27,491 INFO L226 Difference]: Without dead ends: 394269 [2021-12-06 23:00:27,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12401 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4321, Invalid=30835, Unknown=0, NotChecked=0, Total=35156 [2021-12-06 23:00:27,625 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 9168 mSDsluCounter, 10984 mSDsCounter, 0 mSdLazyCounter, 47158 mSolverCounterSat, 10741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9180 SdHoareTripleChecker+Valid, 12950 SdHoareTripleChecker+Invalid, 57899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10741 IncrementalHoareTripleChecker+Valid, 47158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:00:27,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9180 Valid, 12950 Invalid, 57899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10741 Valid, 47158 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2021-12-06 23:00:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394269 states. [2021-12-06 23:00:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394269 to 391649. [2021-12-06 23:00:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391649 states, 330502 states have (on average 1.5855516759353951) internal successors, (524028), 330316 states have internal predecessors, (524028), 60994 states have call successors, (60994), 126 states have call predecessors, (60994), 152 states have return successors, (84970), 61222 states have call predecessors, (84970), 60988 states have call successors, (84970) [2021-12-06 23:00:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391649 states to 391649 states and 669992 transitions. [2021-12-06 23:00:47,687 INFO L78 Accepts]: Start accepts. Automaton has 391649 states and 669992 transitions. Word has length 150 [2021-12-06 23:00:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:00:47,687 INFO L470 AbstractCegarLoop]: Abstraction has 391649 states and 669992 transitions. [2021-12-06 23:00:47,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2021-12-06 23:00:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 391649 states and 669992 transitions. [2021-12-06 23:00:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 23:00:47,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:00:47,946 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, 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 23:00:47,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 23:00:48,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:00:48,148 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:00:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:00:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash 849395613, now seen corresponding path program 1 times [2021-12-06 23:00:48,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:00:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878536443] [2021-12-06 23:00:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:48,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:00:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:00:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:00:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:00:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:00:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:00:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:00:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:00:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:00:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:00:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:00:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:00:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:00:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:00:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 23:00:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 23:00:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:00:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:00:48,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:00:48,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878536443] [2021-12-06 23:00:48,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878536443] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:00:48,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777685385] [2021-12-06 23:00:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:48,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:00:48,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:00:48,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:00:48,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:00:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:48,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:00:48,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:00:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:00:48,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:00:48,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777685385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:00:48,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:00:48,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-06 23:00:48,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219308858] [2021-12-06 23:00:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:00:48,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:00:48,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:00:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:00:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:00:48,575 INFO L87 Difference]: Start difference. First operand 391649 states and 669992 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 23:01:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:01:03,278 INFO L93 Difference]: Finished difference Result 394047 states and 673477 transitions. [2021-12-06 23:01:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:01:03,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 152 [2021-12-06 23:01:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:01:04,558 INFO L225 Difference]: With dead ends: 394047 [2021-12-06 23:01:04,558 INFO L226 Difference]: Without dead ends: 391997 [2021-12-06 23:01:04,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:01:04,684 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 818 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:01:04,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 3580 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:01:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391997 states. [2021-12-06 23:01:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391997 to 391925. [2021-12-06 23:01:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391925 states, 330686 states have (on average 1.585443593015731) internal successors, (524284), 330514 states have internal predecessors, (524284), 61080 states have call successors, (61080), 132 states have call predecessors, (61080), 158 states have return successors, (85088), 61306 states have call predecessors, (85088), 61074 states have call successors, (85088) [2021-12-06 23:01:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391925 states to 391925 states and 670452 transitions. [2021-12-06 23:01:25,074 INFO L78 Accepts]: Start accepts. Automaton has 391925 states and 670452 transitions. Word has length 152 [2021-12-06 23:01:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:01:25,075 INFO L470 AbstractCegarLoop]: Abstraction has 391925 states and 670452 transitions. [2021-12-06 23:01:25,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 23:01:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 391925 states and 670452 transitions. [2021-12-06 23:01:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 23:01:25,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:01:25,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:01:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 23:01:25,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:01:25,594 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:01:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:01:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash -389325253, now seen corresponding path program 1 times [2021-12-06 23:01:25,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:01:25,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842779574] [2021-12-06 23:01:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:01:25,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:01:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:01:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:01:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:01:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:01:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 23:01:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 23:01:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:01:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:01:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:01:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:01:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:01:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:01:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:01:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 23:01:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 23:01:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:01:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 23:01:25,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:01:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842779574] [2021-12-06 23:01:25,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842779574] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:01:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102006420] [2021-12-06 23:01:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:01:25,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:01:25,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:01:25,776 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:01:25,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:01:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:01:25,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:01:25,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:01:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:01:26,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:01:26,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102006420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:01:26,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:01:26,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 23:01:26,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700731072] [2021-12-06 23:01:26,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:01:26,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:01:26,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:01:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:01:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:01:26,026 INFO L87 Difference]: Start difference. First operand 391925 states and 670452 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 23:01:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:01:42,174 INFO L93 Difference]: Finished difference Result 587891 states and 1010005 transitions. [2021-12-06 23:01:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:01:42,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2021-12-06 23:01:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:01:43,505 INFO L225 Difference]: With dead ends: 587891 [2021-12-06 23:01:43,506 INFO L226 Difference]: Without dead ends: 391941 [2021-12-06 23:01:43,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:01:43,869 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 124 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:01:43,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1924 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:01:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391941 states. [2021-12-06 23:02:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391941 to 391925. [2021-12-06 23:02:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391925 states, 330686 states have (on average 1.585437544982249) internal successors, (524282), 330514 states have internal predecessors, (524282), 61080 states have call successors, (61080), 132 states have call predecessors, (61080), 158 states have return successors, (85088), 61306 states have call predecessors, (85088), 61074 states have call successors, (85088) [2021-12-06 23:02:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391925 states to 391925 states and 670450 transitions. [2021-12-06 23:02:04,652 INFO L78 Accepts]: Start accepts. Automaton has 391925 states and 670450 transitions. Word has length 152 [2021-12-06 23:02:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:02:04,652 INFO L470 AbstractCegarLoop]: Abstraction has 391925 states and 670450 transitions. [2021-12-06 23:02:04,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 23:02:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 391925 states and 670450 transitions. [2021-12-06 23:02:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 23:02:04,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:04,920 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, 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 23:02:04,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:02:05,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 23:02:05,121 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2081625928, now seen corresponding path program 1 times [2021-12-06 23:02:05,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:05,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790397573] [2021-12-06 23:02:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:05,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:02:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:02:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:02:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:02:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:02:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:02:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:02:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:02:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:02:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:02:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:02:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:02:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:02:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:02:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 23:02:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:02:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:02:05,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790397573] [2021-12-06 23:02:05,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790397573] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:02:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003189884] [2021-12-06 23:02:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:05,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:02:05,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:02:05,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:02:05,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:02:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:05,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:02:05,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:02:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:02:05,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:02:05,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003189884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:05,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:02:05,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2021-12-06 23:02:05,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675742294] [2021-12-06 23:02:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:05,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:02:05,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:02:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:02:05,747 INFO L87 Difference]: Start difference. First operand 391925 states and 670450 transitions. Second operand has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 23:02:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:02:38,154 INFO L93 Difference]: Finished difference Result 778931 states and 1354197 transitions. [2021-12-06 23:02:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:02:38,155 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 153 [2021-12-06 23:02:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:02:41,154 INFO L225 Difference]: With dead ends: 778931 [2021-12-06 23:02:41,154 INFO L226 Difference]: Without dead ends: 777671 [2021-12-06 23:02:41,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 23:02:41,406 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1543 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 5622 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:02:41,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 5622 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:02:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777671 states. [2021-12-06 23:03:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777671 to 777391. [2021-12-06 23:03:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777391 states, 656102 states have (on average 1.5865917189705259) internal successors, (1040966), 655424 states have internal predecessors, (1040966), 120938 states have call successors, (120938), 292 states have call predecessors, (120938), 350 states have return successors, (190084), 121742 states have call predecessors, (190084), 120924 states have call successors, (190084) [2021-12-06 23:03:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777391 states to 777391 states and 1351988 transitions. [2021-12-06 23:03:27,360 INFO L78 Accepts]: Start accepts. Automaton has 777391 states and 1351988 transitions. Word has length 153 [2021-12-06 23:03:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:27,360 INFO L470 AbstractCegarLoop]: Abstraction has 777391 states and 1351988 transitions. [2021-12-06 23:03:27,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 23:03:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 777391 states and 1351988 transitions. [2021-12-06 23:03:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 23:03:28,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:28,045 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, 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 23:03:28,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 23:03:28,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:03:28,247 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2089268121, now seen corresponding path program 1 times [2021-12-06 23:03:28,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:03:28,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403854733] [2021-12-06 23:03:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:28,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:03:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:03:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:03:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:03:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:03:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:03:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:03:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:03:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:03:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:03:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:03:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:03:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:03:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:03:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:03:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 23:03:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:03:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:03:28,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:03:28,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403854733] [2021-12-06 23:03:28,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403854733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:03:28,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73178997] [2021-12-06 23:03:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:28,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:03:28,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:03:28,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:03:28,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:03:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:28,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:03:28,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:03:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:03:28,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:03:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:03:28,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73178997] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:03:28,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:03:28,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 13] total 28 [2021-12-06 23:03:28,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466238146] [2021-12-06 23:03:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:28,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:03:28,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:03:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:03:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:03:28,977 INFO L87 Difference]: Start difference. First operand 777391 states and 1351988 transitions. Second operand has 13 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 6 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 23:04:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:04:05,932 INFO L93 Difference]: Finished difference Result 782715 states and 1359732 transitions. [2021-12-06 23:04:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:04:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 6 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 153 [2021-12-06 23:04:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:04:09,116 INFO L225 Difference]: With dead ends: 782715 [2021-12-06 23:04:09,116 INFO L226 Difference]: Without dead ends: 779487 [2021-12-06 23:04:09,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 322 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 23:04:09,370 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 1174 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:04:09,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 5773 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:04:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779487 states. [2021-12-06 23:04:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779487 to 778091. [2021-12-06 23:04:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778091 states, 656611 states have (on average 1.5864172242012393) internal successors, (1041659), 655952 states have internal predecessors, (1041659), 121084 states have call successors, (121084), 324 states have call predecessors, (121084), 395 states have return successors, (190297), 121892 states have call predecessors, (190297), 121068 states have call successors, (190297) [2021-12-06 23:04:59,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778091 states to 778091 states and 1353040 transitions. [2021-12-06 23:04:59,524 INFO L78 Accepts]: Start accepts. Automaton has 778091 states and 1353040 transitions. Word has length 153 [2021-12-06 23:04:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:04:59,524 INFO L470 AbstractCegarLoop]: Abstraction has 778091 states and 1353040 transitions. [2021-12-06 23:04:59,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 6 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 23:04:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 778091 states and 1353040 transitions. [2021-12-06 23:05:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 23:05:00,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:00,171 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, 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 23:05:00,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 23:05:00,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 23:05:00,374 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash -75716208, now seen corresponding path program 1 times [2021-12-06 23:05:00,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:00,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275242541] [2021-12-06 23:05:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:00,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:05:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:05:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:05:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:05:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:05:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:05:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:05:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:05:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:05:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:05:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 23:05:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:05:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:05:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:05:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 23:05:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:05:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 23:05:00,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:00,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275242541] [2021-12-06 23:05:00,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275242541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:00,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:00,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:05:00,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100788477] [2021-12-06 23:05:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:00,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:05:00,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:05:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:05:00,499 INFO L87 Difference]: Start difference. First operand 778091 states and 1353040 transitions. Second operand has 9 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 23:05:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:38,795 INFO L93 Difference]: Finished difference Result 782145 states and 1384620 transitions. [2021-12-06 23:05:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:05:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2021-12-06 23:05:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:41,968 INFO L225 Difference]: With dead ends: 782145 [2021-12-06 23:05:41,969 INFO L226 Difference]: Without dead ends: 779969 [2021-12-06 23:05:42,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:05:42,239 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1336 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:42,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 1781 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 23:05:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779969 states. [2021-12-06 23:06:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779969 to 776563. [2021-12-06 23:06:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776563 states, 655509 states have (on average 1.586817267192365) internal successors, (1040173), 654804 states have internal predecessors, (1040173), 120690 states have call successors, (120690), 316 states have call predecessors, (120690), 363 states have return successors, (189803), 121490 states have call predecessors, (189803), 120674 states have call successors, (189803) [2021-12-06 23:06:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776563 states to 776563 states and 1350666 transitions. [2021-12-06 23:06:35,979 INFO L78 Accepts]: Start accepts. Automaton has 776563 states and 1350666 transitions. Word has length 153 [2021-12-06 23:06:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:35,980 INFO L470 AbstractCegarLoop]: Abstraction has 776563 states and 1350666 transitions. [2021-12-06 23:06:35,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 23:06:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 776563 states and 1350666 transitions. [2021-12-06 23:06:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 23:06:36,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:36,612 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:36,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 23:06:36,612 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:06:36,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash -805993055, now seen corresponding path program 1 times [2021-12-06 23:06:36,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977312411] [2021-12-06 23:06:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:36,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:06:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:06:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:06:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:06:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:06:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:06:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:06:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:06:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:06:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:06:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:06:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:06:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:06:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:06:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 23:06:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:06:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:06:36,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:36,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977312411] [2021-12-06 23:06:36,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977312411] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:06:36,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205265747] [2021-12-06 23:06:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:36,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:36,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:36,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:36,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91930c6a-f072-4d58-917f-56e25808ea98/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:06:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:37,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:06:37,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:06:37,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:06:37,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205265747] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:37,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:06:37,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2021-12-06 23:06:37,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717357258] [2021-12-06 23:06:37,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:37,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 23:06:37,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 23:06:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:06:37,445 INFO L87 Difference]: Start difference. First operand 776563 states and 1350666 transitions. Second operand has 27 states, 26 states have (on average 10.038461538461538) internal successors, (261), 19 states have internal predecessors, (261), 7 states have call successors, (48), 12 states have call predecessors, (48), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2021-12-06 23:08:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:00,593 INFO L93 Difference]: Finished difference Result 1563417 states and 2819307 transitions. [2021-12-06 23:08:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-06 23:08:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 10.038461538461538) internal successors, (261), 19 states have internal predecessors, (261), 7 states have call successors, (48), 12 states have call predecessors, (48), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) Word has length 154 [2021-12-06 23:08:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:07,813 INFO L225 Difference]: With dead ends: 1563417 [2021-12-06 23:08:07,813 INFO L226 Difference]: Without dead ends: 1560085 [2021-12-06 23:08:08,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1206, Invalid=6276, Unknown=0, NotChecked=0, Total=7482 [2021-12-06 23:08:08,522 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 7390 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 10381 mSolverCounterSat, 3700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7408 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 14081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3700 IncrementalHoareTripleChecker+Valid, 10381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:08,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7408 Valid, 4129 Invalid, 14081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3700 Valid, 10381 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-06 23:08:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560085 states.