./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a --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 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:47:22,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:47:22,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:47:22,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:47:22,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:47:22,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:47:22,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:47:22,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:47:22,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:47:22,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:47:22,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:47:22,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:47:22,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:47:22,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:47:22,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:47:22,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:47:22,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:47:22,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:47:22,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:47:22,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:47:22,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:47:22,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:47:22,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:47:22,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:47:22,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:47:22,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:47:22,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:47:22,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:47:22,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:47:22,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:47:22,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:47:22,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:47:22,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:47:22,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:47:22,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:47:22,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:47:22,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:47:22,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:47:22,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:47:22,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:47:22,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:47:22,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:47:22,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:47:22,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:47:22,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:47:22,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:47:22,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:47:22,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:47:22,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:47:22,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:47:22,488 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:47:22,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:47:22,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:47:22,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:47:22,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:47:22,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:47:22,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:47:22,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:47:22,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:47:22,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:47:22,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:47:22,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:47:22,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:47:22,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:47:22,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:47:22,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:47:22,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:22,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:47:22,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:47:22,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:47:22,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:47:22,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:47:22,496 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:47:22,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:47:22,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:47:22,497 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_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2022-11-21 13:47:22,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:47:22,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:47:22,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:47:22,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:47:22,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:47:22,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2022-11-21 13:47:26,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:47:26,681 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:47:26,682 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2022-11-21 13:47:26,704 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/data/a7831fc9e/b1f83a7265eb4bb99df78b374422c497/FLAG8a2b73587 [2022-11-21 13:47:26,915 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/data/a7831fc9e/b1f83a7265eb4bb99df78b374422c497 [2022-11-21 13:47:26,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:47:26,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:47:26,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:26,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:47:26,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:47:26,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:26" (1/1) ... [2022-11-21 13:47:26,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3d85ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:26, skipping insertion in model container [2022-11-21 13:47:26,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:26" (1/1) ... [2022-11-21 13:47:26,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:47:27,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:47:27,331 WARN L237 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_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2022-11-21 13:47:27,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:27,739 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:47:27,763 WARN L237 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_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2022-11-21 13:47:27,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:27,917 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:47:27,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27 WrapperNode [2022-11-21 13:47:27,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:27,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:27,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:47:27,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:47:27,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:27,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,044 INFO L138 Inliner]: procedures = 129, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 884 [2022-11-21 13:47:28,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:28,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:47:28,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:47:28,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:47:28,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:47:28,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:47:28,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:47:28,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:47:28,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (1/1) ... [2022-11-21 13:47:28,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:28,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:28,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:47:28,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:47:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-21 13:47:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-21 13:47:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-21 13:47:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-21 13:47:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-21 13:47:28,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-21 13:47:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-21 13:47:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-21 13:47:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-21 13:47:28,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-21 13:47:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-21 13:47:28,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-21 13:47:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-21 13:47:28,305 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-21 13:47:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-21 13:47:28,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-21 13:47:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-21 13:47:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-21 13:47:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-21 13:47:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-21 13:47:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-21 13:47:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-21 13:47:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-21 13:47:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-21 13:47:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-21 13:47:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:47:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-21 13:47:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-21 13:47:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-21 13:47:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-21 13:47:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-21 13:47:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-21 13:47:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-21 13:47:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-21 13:47:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-21 13:47:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-21 13:47:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-21 13:47:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-21 13:47:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-21 13:47:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-21 13:47:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-21 13:47:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-21 13:47:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-21 13:47:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-21 13:47:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-21 13:47:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-21 13:47:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:47:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-21 13:47:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-21 13:47:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:47:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:47:28,727 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:47:28,729 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:47:29,823 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:47:29,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:47:29,847 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:47:29,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:29 BoogieIcfgContainer [2022-11-21 13:47:29,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:47:29,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:47:29,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:47:29,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:47:29,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:47:26" (1/3) ... [2022-11-21 13:47:29,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3bb9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:29, skipping insertion in model container [2022-11-21 13:47:29,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:27" (2/3) ... [2022-11-21 13:47:29,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3bb9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:29, skipping insertion in model container [2022-11-21 13:47:29,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:29" (3/3) ... [2022-11-21 13:47:29,865 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2022-11-21 13:47:29,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:47:29,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:47:29,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:47:29,972 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@539e026, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:47:29,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:47:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-21 13:47:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-21 13:47:30,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:30,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:30,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:30,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2126435666, now seen corresponding path program 1 times [2022-11-21 13:47:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:30,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731407192] [2022-11-21 13:47:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:47:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:47:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:47:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:47:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 13:47:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 13:47:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:47:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:47:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 13:47:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:47:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 13:47:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 13:47:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 13:47:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 13:47:31,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:31,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731407192] [2022-11-21 13:47:31,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731407192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:31,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723320326] [2022-11-21 13:47:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:31,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:31,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:31,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:31,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:47:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:31,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:47:31,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 13:47:31,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:31,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723320326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:31,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:31,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-21 13:47:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546012206] [2022-11-21 13:47:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:47:31,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:31,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:47:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:47:31,649 INFO L87 Difference]: Start difference. First operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:31,723 INFO L93 Difference]: Finished difference Result 526 states and 764 transitions. [2022-11-21 13:47:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:47:31,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-11-21 13:47:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:31,746 INFO L225 Difference]: With dead ends: 526 [2022-11-21 13:47:31,746 INFO L226 Difference]: Without dead ends: 330 [2022-11-21 13:47:31,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:47:31,755 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:31,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-21 13:47:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-11-21 13:47:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.507936507936508) internal successors, (380), 256 states have internal predecessors, (380), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-21 13:47:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 487 transitions. [2022-11-21 13:47:31,834 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 487 transitions. Word has length 127 [2022-11-21 13:47:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:31,836 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 487 transitions. [2022-11-21 13:47:31,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 487 transitions. [2022-11-21 13:47:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-21 13:47:31,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:31,841 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:31,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 13:47:32,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:32,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2060039681, now seen corresponding path program 1 times [2022-11-21 13:47:32,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:32,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370956016] [2022-11-21 13:47:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:32,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:47:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:47:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:47:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 13:47:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:47:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:47:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:47:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:47:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:47:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:47:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:47:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:47:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 13:47:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:32,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370956016] [2022-11-21 13:47:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370956016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:32,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679673228] [2022-11-21 13:47:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:32,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:32,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:32,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:32,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:47:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:47:33,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 13:47:33,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:33,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679673228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:33,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:33,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-21 13:47:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000477742] [2022-11-21 13:47:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:33,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:47:33,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:47:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:47:33,198 INFO L87 Difference]: Start difference. First operand 330 states and 487 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:33,287 INFO L93 Difference]: Finished difference Result 515 states and 741 transitions. [2022-11-21 13:47:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:47:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2022-11-21 13:47:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:33,302 INFO L225 Difference]: With dead ends: 515 [2022-11-21 13:47:33,303 INFO L226 Difference]: Without dead ends: 333 [2022-11-21 13:47:33,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:47:33,306 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:33,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:33,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-21 13:47:33,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2022-11-21 13:47:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 258 states have internal predecessors, (382), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-21 13:47:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 489 transitions. [2022-11-21 13:47:33,369 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 489 transitions. Word has length 128 [2022-11-21 13:47:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:33,370 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 489 transitions. [2022-11-21 13:47:33,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 489 transitions. [2022-11-21 13:47:33,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-21 13:47:33,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:33,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:33,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:33,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:33,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 803166024, now seen corresponding path program 1 times [2022-11-21 13:47:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182155936] [2022-11-21 13:47:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:47:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:47:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:47:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 13:47:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:47:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:47:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 13:47:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:47:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:47:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:47:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:47:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:47:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 13:47:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 13:47:33,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:33,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182155936] [2022-11-21 13:47:33,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182155936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:33,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248542295] [2022-11-21 13:47:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:33,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:33,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:33,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:33,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:47:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:34,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:47:34,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 13:47:34,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:34,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248542295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:34,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:34,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-21 13:47:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806092471] [2022-11-21 13:47:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:34,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:47:34,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:47:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:47:34,381 INFO L87 Difference]: Start difference. First operand 332 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:34,443 INFO L93 Difference]: Finished difference Result 689 states and 1029 transitions. [2022-11-21 13:47:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:47:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2022-11-21 13:47:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:34,449 INFO L225 Difference]: With dead ends: 689 [2022-11-21 13:47:34,449 INFO L226 Difference]: Without dead ends: 384 [2022-11-21 13:47:34,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:47:34,455 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 99 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 950 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 [2022-11-21 13:47:34,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 950 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-21 13:47:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 376. [2022-11-21 13:47:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 287 states have (on average 1.519163763066202) internal successors, (436), 291 states have internal predecessors, (436), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-21 13:47:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 565 transitions. [2022-11-21 13:47:34,507 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 565 transitions. Word has length 134 [2022-11-21 13:47:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:34,508 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 565 transitions. [2022-11-21 13:47:34,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 565 transitions. [2022-11-21 13:47:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-21 13:47:34,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:34,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:34,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:34,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:34,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:34,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1022630467, now seen corresponding path program 1 times [2022-11-21 13:47:34,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:34,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258749133] [2022-11-21 13:47:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:47:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:47:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:47:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 13:47:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 13:47:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 13:47:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:47:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 13:47:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:47:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 13:47:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 13:47:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 13:47:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:47:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 13:47:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:35,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258749133] [2022-11-21 13:47:35,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258749133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:35,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286754513] [2022-11-21 13:47:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:35,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:35,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:35,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:35,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:47:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:35,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:47:35,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 13:47:35,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:35,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286754513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:35,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:35,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-21 13:47:35,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195720444] [2022-11-21 13:47:35,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:35,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:47:35,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:47:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:47:35,629 INFO L87 Difference]: Start difference. First operand 376 states and 565 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:35,722 INFO L93 Difference]: Finished difference Result 743 states and 1120 transitions. [2022-11-21 13:47:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:47:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-11-21 13:47:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:35,727 INFO L225 Difference]: With dead ends: 743 [2022-11-21 13:47:35,727 INFO L226 Difference]: Without dead ends: 378 [2022-11-21 13:47:35,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:47:35,733 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 117 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:35,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1775 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-21 13:47:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-21 13:47:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 288 states have (on average 1.5173611111111112) internal successors, (437), 293 states have internal predecessors, (437), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2022-11-21 13:47:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 568 transitions. [2022-11-21 13:47:35,763 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 568 transitions. Word has length 135 [2022-11-21 13:47:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:35,764 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 568 transitions. [2022-11-21 13:47:35,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 568 transitions. [2022-11-21 13:47:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-21 13:47:35,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:35,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:35,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:35,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:35,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2063647029, now seen corresponding path program 1 times [2022-11-21 13:47:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:35,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529286111] [2022-11-21 13:47:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 13:47:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:47:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 13:47:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:47:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:47:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 13:47:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:47:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 13:47:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:47:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 13:47:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 13:47:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 13:47:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 13:47:36,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529286111] [2022-11-21 13:47:36,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529286111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265928906] [2022-11-21 13:47:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:36,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:36,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:36,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:47:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:36,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:47:36,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 13:47:36,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:36,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265928906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:36,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:36,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-21 13:47:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483249812] [2022-11-21 13:47:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:47:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:47:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:47:36,839 INFO L87 Difference]: Start difference. First operand 378 states and 568 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:36,948 INFO L93 Difference]: Finished difference Result 745 states and 1125 transitions. [2022-11-21 13:47:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:47:36,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 136 [2022-11-21 13:47:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:36,954 INFO L225 Difference]: With dead ends: 745 [2022-11-21 13:47:36,954 INFO L226 Difference]: Without dead ends: 380 [2022-11-21 13:47:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:47:36,957 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 116 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:36,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1764 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-21 13:47:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2022-11-21 13:47:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.5155709342560553) internal successors, (438), 295 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-11-21 13:47:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 574 transitions. [2022-11-21 13:47:36,995 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 574 transitions. Word has length 136 [2022-11-21 13:47:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:36,997 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 574 transitions. [2022-11-21 13:47:36,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 574 transitions. [2022-11-21 13:47:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-21 13:47:37,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:37,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:37,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:37,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:37,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1671129868, now seen corresponding path program 1 times [2022-11-21 13:47:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105663071] [2022-11-21 13:47:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 13:47:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 13:47:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 13:47:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:47:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 13:47:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 13:47:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 13:47:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 13:47:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:47:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 13:47:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 13:47:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 13:47:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:37,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105663071] [2022-11-21 13:47:37,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105663071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:37,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:37,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:47:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137886594] [2022-11-21 13:47:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:37,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:47:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:47:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:47:37,518 INFO L87 Difference]: Start difference. First operand 380 states and 574 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:39,811 INFO L93 Difference]: Finished difference Result 816 states and 1240 transitions. [2022-11-21 13:47:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:47:39,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2022-11-21 13:47:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:39,816 INFO L225 Difference]: With dead ends: 816 [2022-11-21 13:47:39,816 INFO L226 Difference]: Without dead ends: 459 [2022-11-21 13:47:39,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:47:39,819 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 898 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:39,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 814 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 13:47:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-11-21 13:47:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 380. [2022-11-21 13:47:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.5155709342560553) internal successors, (438), 295 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2022-11-21 13:47:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 573 transitions. [2022-11-21 13:47:39,908 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 573 transitions. Word has length 137 [2022-11-21 13:47:39,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:39,909 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 573 transitions. [2022-11-21 13:47:39,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 573 transitions. [2022-11-21 13:47:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-21 13:47:39,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:39,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:39,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:47:39,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash -937480124, now seen corresponding path program 2 times [2022-11-21 13:47:39,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:39,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099021155] [2022-11-21 13:47:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:39,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:47:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 13:47:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:47:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:47:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:47:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 13:47:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 13:47:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:47:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:47:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 13:47:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 13:47:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 13:47:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:40,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099021155] [2022-11-21 13:47:40,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099021155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:40,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:40,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:47:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492339334] [2022-11-21 13:47:40,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:47:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:40,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:47:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:47:40,202 INFO L87 Difference]: Start difference. First operand 380 states and 573 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:42,357 INFO L93 Difference]: Finished difference Result 818 states and 1243 transitions. [2022-11-21 13:47:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:47:42,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2022-11-21 13:47:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:42,360 INFO L225 Difference]: With dead ends: 818 [2022-11-21 13:47:42,361 INFO L226 Difference]: Without dead ends: 461 [2022-11-21 13:47:42,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:47:42,363 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 894 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:42,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 814 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 13:47:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-21 13:47:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2022-11-21 13:47:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2022-11-21 13:47:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 576 transitions. [2022-11-21 13:47:42,417 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 576 transitions. Word has length 138 [2022-11-21 13:47:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:42,418 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 576 transitions. [2022-11-21 13:47:42,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 576 transitions. [2022-11-21 13:47:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 13:47:42,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:42,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:47:42,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -343602757, now seen corresponding path program 1 times [2022-11-21 13:47:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:42,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132325409] [2022-11-21 13:47:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 13:47:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:47:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 13:47:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:47:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:47:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:47:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 13:47:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:47:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 13:47:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 13:47:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132325409] [2022-11-21 13:47:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132325409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:42,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:42,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:47:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432943475] [2022-11-21 13:47:42,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:47:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:47:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:47:42,701 INFO L87 Difference]: Start difference. First operand 382 states and 576 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:44,547 INFO L93 Difference]: Finished difference Result 818 states and 1242 transitions. [2022-11-21 13:47:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:47:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2022-11-21 13:47:44,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:44,550 INFO L225 Difference]: With dead ends: 818 [2022-11-21 13:47:44,550 INFO L226 Difference]: Without dead ends: 461 [2022-11-21 13:47:44,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:47:44,552 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 896 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:44,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 814 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:47:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-21 13:47:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2022-11-21 13:47:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2022-11-21 13:47:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 576 transitions. [2022-11-21 13:47:44,587 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 576 transitions. Word has length 139 [2022-11-21 13:47:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:44,587 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 576 transitions. [2022-11-21 13:47:44,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 13:47:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 576 transitions. [2022-11-21 13:47:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 13:47:44,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:44,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:47:44,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1689791289, now seen corresponding path program 1 times [2022-11-21 13:47:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:44,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372585401] [2022-11-21 13:47:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:44,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 13:47:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:47:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 13:47:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:47:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:47:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:47:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 13:47:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:47:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 13:47:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 13:47:44,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:44,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372585401] [2022-11-21 13:47:44,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372585401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:44,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:44,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:47:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572112636] [2022-11-21 13:47:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:44,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:47:44,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:47:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:47:44,842 INFO L87 Difference]: Start difference. First operand 382 states and 576 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 13:47:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:47,323 INFO L93 Difference]: Finished difference Result 816 states and 1237 transitions. [2022-11-21 13:47:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:47:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 139 [2022-11-21 13:47:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:47,326 INFO L225 Difference]: With dead ends: 816 [2022-11-21 13:47:47,326 INFO L226 Difference]: Without dead ends: 461 [2022-11-21 13:47:47,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:47:47,332 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1009 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:47,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1100 Invalid, 3762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 13:47:47,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-21 13:47:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2022-11-21 13:47:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-11-21 13:47:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 575 transitions. [2022-11-21 13:47:47,370 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 575 transitions. Word has length 139 [2022-11-21 13:47:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:47,372 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 575 transitions. [2022-11-21 13:47:47,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 13:47:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 575 transitions. [2022-11-21 13:47:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-21 13:47:47,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:47,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:47,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:47:47,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1067374004, now seen corresponding path program 2 times [2022-11-21 13:47:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:47,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682600033] [2022-11-21 13:47:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:47,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 13:47:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 13:47:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 13:47:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 13:47:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:47:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 13:47:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:47:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 13:47:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 13:47:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 13:47:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 13:47:47,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:47,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682600033] [2022-11-21 13:47:47,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682600033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:47,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:47,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:47:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311328823] [2022-11-21 13:47:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:47,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:47:47,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:47:47,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:47:47,630 INFO L87 Difference]: Start difference. First operand 382 states and 575 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 13:47:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:50,116 INFO L93 Difference]: Finished difference Result 818 states and 1243 transitions. [2022-11-21 13:47:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:47:50,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2022-11-21 13:47:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:50,119 INFO L225 Difference]: With dead ends: 818 [2022-11-21 13:47:50,119 INFO L226 Difference]: Without dead ends: 463 [2022-11-21 13:47:50,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:47:50,121 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1005 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:50,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1100 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 13:47:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-21 13:47:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 384. [2022-11-21 13:47:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 291 states have (on average 1.5120274914089347) internal successors, (440), 299 states have internal predecessors, (440), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2022-11-21 13:47:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 581 transitions. [2022-11-21 13:47:50,161 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 581 transitions. Word has length 140 [2022-11-21 13:47:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:50,162 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 581 transitions. [2022-11-21 13:47:50,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 13:47:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 581 transitions. [2022-11-21 13:47:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-21 13:47:50,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:50,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:50,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:47:50,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:50,166 INFO L85 PathProgramCache]: Analyzing trace with hash -932441698, now seen corresponding path program 1 times [2022-11-21 13:47:50,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:50,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7575925] [2022-11-21 13:47:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:50,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 13:47:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:47:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:47:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:47:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:47:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:47:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 13:47:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 13:47:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:47:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:47:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7575925] [2022-11-21 13:47:50,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7575925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867991831] [2022-11-21 13:47:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:50,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:50,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:50,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:50,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:47:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:50,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:47:50,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:50,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:47:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:50,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867991831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:47:50,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:47:50,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-21 13:47:50,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782921554] [2022-11-21 13:47:50,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:47:50,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:47:50,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:50,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:47:50,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:47:50,783 INFO L87 Difference]: Start difference. First operand 384 states and 581 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-21 13:47:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:53,072 INFO L93 Difference]: Finished difference Result 972 states and 1541 transitions. [2022-11-21 13:47:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:47:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 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 141 [2022-11-21 13:47:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:53,077 INFO L225 Difference]: With dead ends: 972 [2022-11-21 13:47:53,078 INFO L226 Difference]: Without dead ends: 790 [2022-11-21 13:47:53,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:47:53,079 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1080 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:53,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1401 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 13:47:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-11-21 13:47:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 687. [2022-11-21 13:47:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 530 states have (on average 1.5811320754716982) internal successors, (838), 538 states have internal predecessors, (838), 130 states have call successors, (130), 23 states have call predecessors, (130), 26 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2022-11-21 13:47:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1117 transitions. [2022-11-21 13:47:53,144 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1117 transitions. Word has length 141 [2022-11-21 13:47:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:53,145 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1117 transitions. [2022-11-21 13:47:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-21 13:47:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1117 transitions. [2022-11-21 13:47:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 13:47:53,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:53,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:53,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:53,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fd7fb7-7f56-40c4-b604-2a2d3fa69c2b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 13:47:53,356 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 735109243, now seen corresponding path program 1 times [2022-11-21 13:47:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:53,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788688535] [2022-11-21 13:47:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:47:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 13:47:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:47:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:47:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:47:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:47:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 13:47:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 13:47:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:47:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-21 13:47:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:53,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:53,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788688535] [2022-11-21 13:47:53,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788688535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:53,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:53,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:47:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436352302] [2022-11-21 13:47:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:53,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:47:53,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:47:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:47:53,468 INFO L87 Difference]: Start difference. First operand 687 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:54,864 INFO L93 Difference]: Finished difference Result 1693 states and 2820 transitions. [2022-11-21 13:47:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2022-11-21 13:47:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:54,871 INFO L225 Difference]: With dead ends: 1693 [2022-11-21 13:47:54,871 INFO L226 Difference]: Without dead ends: 1074 [2022-11-21 13:47:54,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:47:54,874 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 878 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:54,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 692 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:47:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-11-21 13:47:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 987. [2022-11-21 13:47:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 766 states have (on average 1.5966057441253263) internal successors, (1223), 774 states have internal predecessors, (1223), 194 states have call successors, (194), 23 states have call predecessors, (194), 26 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2022-11-21 13:47:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1640 transitions. [2022-11-21 13:47:54,970 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1640 transitions. Word has length 147 [2022-11-21 13:47:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:54,971 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1640 transitions. [2022-11-21 13:47:54,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1640 transitions. [2022-11-21 13:47:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-21 13:47:54,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:54,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:54,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:47:54,978 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash -101522995, now seen corresponding path program 1 times [2022-11-21 13:47:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:54,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398883256] [2022-11-21 13:47:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 13:47:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 13:47:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 13:47:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 13:47:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 13:47:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 13:47:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 13:47:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 13:47:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 13:47:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:55,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:55,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398883256] [2022-11-21 13:47:55,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398883256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:55,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:55,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:47:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607506959] [2022-11-21 13:47:55,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:55,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:47:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:47:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:47:55,100 INFO L87 Difference]: Start difference. First operand 987 states and 1640 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:56,637 INFO L93 Difference]: Finished difference Result 2408 states and 4065 transitions. [2022-11-21 13:47:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-11-21 13:47:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:56,648 INFO L225 Difference]: With dead ends: 2408 [2022-11-21 13:47:56,648 INFO L226 Difference]: Without dead ends: 1542 [2022-11-21 13:47:56,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:47:56,653 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 876 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:56,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 661 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:47:56,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-11-21 13:47:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1455. [2022-11-21 13:47:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1139 states have (on average 1.6066725197541702) internal successors, (1830), 1147 states have internal predecessors, (1830), 289 states have call successors, (289), 23 states have call predecessors, (289), 26 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2022-11-21 13:47:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2437 transitions. [2022-11-21 13:47:56,808 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2437 transitions. Word has length 148 [2022-11-21 13:47:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:56,808 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2437 transitions. [2022-11-21 13:47:56,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2437 transitions. [2022-11-21 13:47:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-21 13:47:56,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:56,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:47:56,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1202814691, now seen corresponding path program 1 times [2022-11-21 13:47:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:56,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747588979] [2022-11-21 13:47:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:56,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:47:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:47:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 13:47:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 13:47:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:47:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 13:47:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:47:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 13:47:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 13:47:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 13:47:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:56,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:56,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747588979] [2022-11-21 13:47:56,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747588979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:56,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:56,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:47:56,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128689942] [2022-11-21 13:47:56,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:56,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:47:56,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:47:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:47:56,947 INFO L87 Difference]: Start difference. First operand 1455 states and 2437 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:58,485 INFO L93 Difference]: Finished difference Result 3455 states and 5906 transitions. [2022-11-21 13:47:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2022-11-21 13:47:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:58,498 INFO L225 Difference]: With dead ends: 3455 [2022-11-21 13:47:58,498 INFO L226 Difference]: Without dead ends: 2246 [2022-11-21 13:47:58,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:47:58,505 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 874 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:58,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 659 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:47:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-21 13:47:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2159. [2022-11-21 13:47:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 1720 states have (on average 1.6145348837209301) internal successors, (2777), 1728 states have internal predecessors, (2777), 412 states have call successors, (412), 23 states have call predecessors, (412), 26 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2022-11-21 13:47:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3646 transitions. [2022-11-21 13:47:58,733 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3646 transitions. Word has length 149 [2022-11-21 13:47:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:58,734 INFO L495 AbstractCegarLoop]: Abstraction has 2159 states and 3646 transitions. [2022-11-21 13:47:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:47:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3646 transitions. [2022-11-21 13:47:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-21 13:47:58,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:58,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:47:58,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1263670958, now seen corresponding path program 1 times [2022-11-21 13:47:58,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:58,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532416925] [2022-11-21 13:47:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:47:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:47:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:47:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:47:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:47:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:47:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:47:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 13:47:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 13:47:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:47:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 13:47:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:47:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 13:47:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:47:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 13:47:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-21 13:47:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:47:58,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:58,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532416925] [2022-11-21 13:47:58,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532416925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:58,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:58,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:47:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889609566] [2022-11-21 13:47:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:58,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:47:58,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:47:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:47:58,890 INFO L87 Difference]: Start difference. First operand 2159 states and 3646 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:00,397 INFO L93 Difference]: Finished difference Result 5074 states and 8760 transitions. [2022-11-21 13:48:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:00,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2022-11-21 13:48:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:00,416 INFO L225 Difference]: With dead ends: 5074 [2022-11-21 13:48:00,416 INFO L226 Difference]: Without dead ends: 3365 [2022-11-21 13:48:00,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:00,424 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 872 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:00,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 659 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:48:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2022-11-21 13:48:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3278. [2022-11-21 13:48:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 2660 states have (on average 1.6195488721804512) internal successors, (4308), 2668 states have internal predecessors, (4308), 591 states have call successors, (591), 23 states have call predecessors, (591), 26 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2022-11-21 13:48:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5561 transitions. [2022-11-21 13:48:00,788 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5561 transitions. Word has length 150 [2022-11-21 13:48:00,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:00,789 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5561 transitions. [2022-11-21 13:48:00,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5561 transitions. [2022-11-21 13:48:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-21 13:48:00,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:00,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:00,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:48:00,807 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash -801884583, now seen corresponding path program 1 times [2022-11-21 13:48:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:00,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943498324] [2022-11-21 13:48:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:48:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:48:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:48:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:48:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:48:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:48:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 13:48:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 13:48:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:48:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:48:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:48:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:48:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 13:48:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 13:48:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-21 13:48:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 13:48:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:48:00,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:00,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943498324] [2022-11-21 13:48:00,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943498324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:00,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:00,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816182252] [2022-11-21 13:48:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:00,926 INFO L87 Difference]: Start difference. First operand 3278 states and 5561 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:02,699 INFO L93 Difference]: Finished difference Result 7992 states and 13859 transitions. [2022-11-21 13:48:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:02,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2022-11-21 13:48:02,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:02,727 INFO L225 Difference]: With dead ends: 7992 [2022-11-21 13:48:02,727 INFO L226 Difference]: Without dead ends: 5396 [2022-11-21 13:48:02,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:02,737 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 870 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:02,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 674 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:48:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2022-11-21 13:48:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 5309. [2022-11-21 13:48:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 4315 states have (on average 1.6129779837775202) internal successors, (6960), 4323 states have internal predecessors, (6960), 967 states have call successors, (967), 23 states have call predecessors, (967), 26 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2022-11-21 13:48:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 9009 transitions. [2022-11-21 13:48:03,324 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 9009 transitions. Word has length 151 [2022-11-21 13:48:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:03,324 INFO L495 AbstractCegarLoop]: Abstraction has 5309 states and 9009 transitions. [2022-11-21 13:48:03,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 9009 transitions. [2022-11-21 13:48:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-21 13:48:03,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:03,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:03,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:48:03,353 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1972882062, now seen corresponding path program 1 times [2022-11-21 13:48:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127857081] [2022-11-21 13:48:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:48:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:48:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:48:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:48:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:48:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:48:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:48:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:48:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 13:48:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:48:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 13:48:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:48:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 13:48:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 13:48:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 13:48:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 13:48:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:48:03,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:03,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127857081] [2022-11-21 13:48:03,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127857081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:03,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:03,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141660386] [2022-11-21 13:48:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:03,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:03,490 INFO L87 Difference]: Start difference. First operand 5309 states and 9009 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:05,521 INFO L93 Difference]: Finished difference Result 13134 states and 22768 transitions. [2022-11-21 13:48:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-11-21 13:48:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:05,569 INFO L225 Difference]: With dead ends: 13134 [2022-11-21 13:48:05,569 INFO L226 Difference]: Without dead ends: 8884 [2022-11-21 13:48:05,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:05,586 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 868 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:05,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 684 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:48:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8884 states. [2022-11-21 13:48:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8884 to 8797. [2022-11-21 13:48:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8797 states, 7197 states have (on average 1.6109490065304988) internal successors, (11594), 7205 states have internal predecessors, (11594), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 26 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2022-11-21 13:48:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 14933 transitions. [2022-11-21 13:48:06,561 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 14933 transitions. Word has length 152 [2022-11-21 13:48:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:06,561 INFO L495 AbstractCegarLoop]: Abstraction has 8797 states and 14933 transitions. [2022-11-21 13:48:06,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 14933 transitions. [2022-11-21 13:48:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-21 13:48:06,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:06,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:06,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:48:06,601 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash 241176795, now seen corresponding path program 1 times [2022-11-21 13:48:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:06,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051210976] [2022-11-21 13:48:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:06,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:48:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:48:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:48:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:48:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:48:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:48:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:48:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:48:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:48:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 13:48:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:48:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 13:48:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 13:48:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 13:48:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-21 13:48:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 13:48:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:48:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:06,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051210976] [2022-11-21 13:48:06,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051210976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:06,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:06,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483139883] [2022-11-21 13:48:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:06,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:06,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:06,741 INFO L87 Difference]: Start difference. First operand 8797 states and 14933 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:09,355 INFO L93 Difference]: Finished difference Result 22793 states and 39474 transitions. [2022-11-21 13:48:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2022-11-21 13:48:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:09,420 INFO L225 Difference]: With dead ends: 22793 [2022-11-21 13:48:09,420 INFO L226 Difference]: Without dead ends: 15477 [2022-11-21 13:48:09,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:09,443 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 866 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:09,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 702 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:48:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15477 states. [2022-11-21 13:48:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15477 to 15390. [2022-11-21 13:48:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15390 states, 12587 states have (on average 1.6016524986096767) internal successors, (20160), 12595 states have internal predecessors, (20160), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 26 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2022-11-21 13:48:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15390 states to 15390 states and 26049 transitions. [2022-11-21 13:48:10,671 INFO L78 Accepts]: Start accepts. Automaton has 15390 states and 26049 transitions. Word has length 153 [2022-11-21 13:48:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:10,671 INFO L495 AbstractCegarLoop]: Abstraction has 15390 states and 26049 transitions. [2022-11-21 13:48:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 15390 states and 26049 transitions. [2022-11-21 13:48:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-21 13:48:10,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:10,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:48:10,724 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:10,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1906410995, now seen corresponding path program 1 times [2022-11-21 13:48:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:10,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579332741] [2022-11-21 13:48:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:48:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:48:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:48:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:48:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:48:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:48:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 13:48:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 13:48:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 13:48:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 13:48:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 13:48:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 13:48:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:48:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 13:48:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 13:48:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 13:48:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:48:10,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:10,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579332741] [2022-11-21 13:48:10,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579332741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:10,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:10,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364003276] [2022-11-21 13:48:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:10,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:10,847 INFO L87 Difference]: Start difference. First operand 15390 states and 26049 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:14,746 INFO L93 Difference]: Finished difference Result 40749 states and 70457 transitions. [2022-11-21 13:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2022-11-21 13:48:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:14,863 INFO L225 Difference]: With dead ends: 40749 [2022-11-21 13:48:14,864 INFO L226 Difference]: Without dead ends: 27447 [2022-11-21 13:48:14,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:14,897 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 864 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:14,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 664 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:48:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27447 states. [2022-11-21 13:48:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27447 to 27360. [2022-11-21 13:48:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27360 states, 22518 states have (on average 1.5972999378275157) internal successors, (35968), 22526 states have internal predecessors, (35968), 4815 states have call successors, (4815), 23 states have call predecessors, (4815), 26 states have return successors, (5426), 4812 states have call predecessors, (5426), 4812 states have call successors, (5426) [2022-11-21 13:48:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27360 states to 27360 states and 46209 transitions. [2022-11-21 13:48:17,782 INFO L78 Accepts]: Start accepts. Automaton has 27360 states and 46209 transitions. Word has length 154 [2022-11-21 13:48:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:17,782 INFO L495 AbstractCegarLoop]: Abstraction has 27360 states and 46209 transitions. [2022-11-21 13:48:17,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 27360 states and 46209 transitions. [2022-11-21 13:48:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-21 13:48:17,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:17,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:17,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 13:48:17,863 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1103815747, now seen corresponding path program 1 times [2022-11-21 13:48:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:17,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366525265] [2022-11-21 13:48:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:48:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:48:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:48:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:48:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:48:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:48:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:48:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:48:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 13:48:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 13:48:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 13:48:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 13:48:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 13:48:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 13:48:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 13:48:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 13:48:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:48:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:18,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366525265] [2022-11-21 13:48:18,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366525265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:18,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:18,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770706659] [2022-11-21 13:48:18,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:18,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:18,182 INFO L87 Difference]: Start difference. First operand 27360 states and 46209 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:23,191 INFO L93 Difference]: Finished difference Result 74536 states and 128056 transitions. [2022-11-21 13:48:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:23,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-11-21 13:48:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:23,391 INFO L225 Difference]: With dead ends: 74536 [2022-11-21 13:48:23,391 INFO L226 Difference]: Without dead ends: 49996 [2022-11-21 13:48:23,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:23,448 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 862 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:23,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 662 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:48:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49996 states. [2022-11-21 13:48:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49996 to 49909. [2022-11-21 13:48:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49909 states, 41352 states have (on average 1.5914345134455408) internal successors, (65809), 41360 states have internal predecessors, (65809), 8530 states have call successors, (8530), 23 states have call predecessors, (8530), 26 states have return successors, (9673), 8527 states have call predecessors, (9673), 8527 states have call successors, (9673) [2022-11-21 13:48:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49909 states to 49909 states and 84012 transitions. [2022-11-21 13:48:28,198 INFO L78 Accepts]: Start accepts. Automaton has 49909 states and 84012 transitions. Word has length 155 [2022-11-21 13:48:28,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:28,199 INFO L495 AbstractCegarLoop]: Abstraction has 49909 states and 84012 transitions. [2022-11-21 13:48:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 49909 states and 84012 transitions. [2022-11-21 13:48:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 13:48:28,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:28,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:28,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:48:28,279 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:28,280 INFO L85 PathProgramCache]: Analyzing trace with hash 352220563, now seen corresponding path program 1 times [2022-11-21 13:48:28,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:28,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059852900] [2022-11-21 13:48:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:28,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:48:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:48:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:48:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:48:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:48:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:48:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:48:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 13:48:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:48:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:48:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:48:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:48:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:48:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:48:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-21 13:48:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-21 13:48:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 13:48:28,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:28,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059852900] [2022-11-21 13:48:28,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059852900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:28,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:28,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542925300] [2022-11-21 13:48:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:28,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:28,429 INFO L87 Difference]: Start difference. First operand 49909 states and 84012 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:48:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:36,101 INFO L93 Difference]: Finished difference Result 93022 states and 160187 transitions. [2022-11-21 13:48:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:36,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 156 [2022-11-21 13:48:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:36,610 INFO L225 Difference]: With dead ends: 93022 [2022-11-21 13:48:36,630 INFO L226 Difference]: Without dead ends: 92840 [2022-11-21 13:48:36,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:36,667 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 860 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:36,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 664 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:48:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92840 states.