./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.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_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/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_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/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_c02ceff2-73cf-46bd-923c-4b9071ef920f/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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- 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 13:41:37,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:41:37,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:41:37,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:41:37,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:41:37,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:41:37,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:41:37,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:41:37,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:41:37,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:41:37,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:41:37,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:41:37,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:41:37,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:41:37,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:41:37,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:41:37,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:41:37,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:41:37,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:41:37,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:41:37,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:41:37,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:41:37,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:41:37,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:41:37,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:41:37,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:41:37,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:41:37,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:41:37,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:41:37,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:41:37,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:41:37,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:41:37,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:41:37,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:41:37,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:41:37,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:41:37,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:41:37,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:41:37,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:41:37,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:41:37,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:41:37,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:41:37,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:41:37,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:41:37,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:41:37,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:41:37,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:41:37,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:41:37,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:41:37,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:41:37,758 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:41:37,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:41:37,759 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:41:37,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:41:37,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:41:37,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:41:37,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:41:37,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:41:37,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:41:37,760 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:41:37,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:41:37,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:41:37,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:41:37,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:41:37,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:41:37,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:41:37,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:41:37,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:41:37,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:41:37,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:41:37,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:41:37,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:41:37,764 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:41:37,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:41:37,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:41:37,764 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_c02ceff2-73cf-46bd-923c-4b9071ef920f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2022-11-21 13:41:38,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:41:38,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:41:38,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:41:38,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:41:38,132 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:41:38,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-11-21 13:41:41,053 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:41:41,355 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:41:41,355 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-11-21 13:41:41,376 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/data/83c9a2c79/c6683267906e46899d0b9b84e8f57179/FLAG762e1d635 [2022-11-21 13:41:41,391 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/data/83c9a2c79/c6683267906e46899d0b9b84e8f57179 [2022-11-21 13:41:41,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:41:41,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:41:41,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:41:41,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:41:41,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:41:41,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:41:41" (1/1) ... [2022-11-21 13:41:41,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29980f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:41, skipping insertion in model container [2022-11-21 13:41:41,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:41:41" (1/1) ... [2022-11-21 13:41:41,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:41:41,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:41:41,760 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_c02ceff2-73cf-46bd-923c-4b9071ef920f/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2022-11-21 13:41:42,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:41:42,276 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:41:42,294 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_c02ceff2-73cf-46bd-923c-4b9071ef920f/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2022-11-21 13:41:42,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:41:42,439 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:41:42,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42 WrapperNode [2022-11-21 13:41:42,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:41:42,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:41:42,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:41:42,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:41:42,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,549 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 909 [2022-11-21 13:41:42,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:41:42,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:41:42,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:41:42,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:41:42,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:41:42,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:41:42,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:41:42,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:41:42,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (1/1) ... [2022-11-21 13:41:42,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:41:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:42,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:41:42,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:41:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-21 13:41:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-21 13:41:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:41:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-21 13:41:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-21 13:41:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-21 13:41:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-21 13:41:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-21 13:41:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-21 13:41:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-21 13:41:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-21 13:41:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-21 13:41:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-21 13:41:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-21 13:41:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-21 13:41:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-21 13:41:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-21 13:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-21 13:41:42,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-21 13:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-21 13:41:42,793 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-21 13:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-21 13:41:42,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-21 13:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-21 13:41:42,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-21 13:41:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-21 13:41:42,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-21 13:41:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-21 13:41:42,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-21 13:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-21 13:41:42,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-21 13:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-21 13:41:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-21 13:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-21 13:41:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-21 13:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-21 13:41:42,797 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-21 13:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-21 13:41:42,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-21 13:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-21 13:41:42,797 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-21 13:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-21 13:41:42,798 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-21 13:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-21 13:41:42,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-21 13:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-21 13:41:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-21 13:41:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-21 13:41:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-21 13:41:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-21 13:41:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-21 13:41:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:41:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:41:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-21 13:41:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-21 13:41:42,968 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:41:42,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:41:44,260 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:41:44,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:41:44,273 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:41:44,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:44 BoogieIcfgContainer [2022-11-21 13:41:44,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:41:44,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:41:44,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:41:44,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:41:44,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:41:41" (1/3) ... [2022-11-21 13:41:44,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f269567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:44, skipping insertion in model container [2022-11-21 13:41:44,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:42" (2/3) ... [2022-11-21 13:41:44,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f269567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:44, skipping insertion in model container [2022-11-21 13:41:44,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:44" (3/3) ... [2022-11-21 13:41:44,285 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2022-11-21 13:41:44,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:41:44,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:41:44,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:41:44,372 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;@686eb132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:41:44,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:41:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 459 states have (on average 1.6884531590413943) internal successors, (775), 482 states have internal predecessors, (775), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-21 13:41:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 13:41:44,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:44,397 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:44,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:44,403 INFO L85 PathProgramCache]: Analyzing trace with hash 550728757, now seen corresponding path program 1 times [2022-11-21 13:41:44,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:44,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048827646] [2022-11-21 13:41:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:41:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 13:41:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:41:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 13:41:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:45,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:45,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048827646] [2022-11-21 13:41:45,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048827646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513092592] [2022-11-21 13:41:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:45,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:45,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:45,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:45,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:41:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:46,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:41:46,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 13:41:46,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:46,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513092592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:46,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:46,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-11-21 13:41:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835136105] [2022-11-21 13:41:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:41:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:41:46,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:41:46,195 INFO L87 Difference]: Start difference. First operand has 588 states, 459 states have (on average 1.6884531590413943) internal successors, (775), 482 states have internal predecessors, (775), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 13:41:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:46,320 INFO L93 Difference]: Finished difference Result 609 states and 1007 transitions. [2022-11-21 13:41:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:41:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-11-21 13:41:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:46,349 INFO L225 Difference]: With dead ends: 609 [2022-11-21 13:41:46,349 INFO L226 Difference]: Without dead ends: 580 [2022-11-21 13:41:46,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:41:46,357 INFO L413 NwaCegarLoop]: 968 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, 968 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 13:41:46,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:41:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-21 13:41:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-11-21 13:41:46,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.6865342163355408) internal successors, (764), 474 states have internal predecessors, (764), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-21 13:41:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 961 transitions. [2022-11-21 13:41:46,448 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 961 transitions. Word has length 83 [2022-11-21 13:41:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:46,450 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 961 transitions. [2022-11-21 13:41:46,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 13:41:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 961 transitions. [2022-11-21 13:41:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-21 13:41:46,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:46,455 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:46,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:46,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 13:41:46,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:46,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:46,665 INFO L85 PathProgramCache]: Analyzing trace with hash -473244636, now seen corresponding path program 1 times [2022-11-21 13:41:46,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:46,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784843140] [2022-11-21 13:41:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:46,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:41:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 13:41:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:41:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 13:41:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:47,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:47,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784843140] [2022-11-21 13:41:47,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784843140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:47,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620029510] [2022-11-21 13:41:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:47,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:47,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:47,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:47,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:41:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:47,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:41:47,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:47,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620029510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:47,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:47,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:47,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500355608] [2022-11-21 13:41:47,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:47,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:47,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:47,880 INFO L87 Difference]: Start difference. First operand 580 states and 961 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:47,979 INFO L93 Difference]: Finished difference Result 1151 states and 1914 transitions. [2022-11-21 13:41:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:41:47,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-11-21 13:41:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:47,985 INFO L225 Difference]: With dead ends: 1151 [2022-11-21 13:41:47,985 INFO L226 Difference]: Without dead ends: 580 [2022-11-21 13:41:47,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:47,992 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 14 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:47,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2834 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:41:47,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-21 13:41:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-11-21 13:41:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.684326710816777) internal successors, (763), 474 states have internal predecessors, (763), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-21 13:41:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 960 transitions. [2022-11-21 13:41:48,028 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 960 transitions. Word has length 85 [2022-11-21 13:41:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:48,029 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 960 transitions. [2022-11-21 13:41:48,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 960 transitions. [2022-11-21 13:41:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-21 13:41:48,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:48,033 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:48,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:48,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:48,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1800576756, now seen corresponding path program 1 times [2022-11-21 13:41:48,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:48,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685558729] [2022-11-21 13:41:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:41:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 13:41:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:48,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685558729] [2022-11-21 13:41:48,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685558729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:48,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799685351] [2022-11-21 13:41:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:48,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:48,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:48,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:41:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:49,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:49,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:41:49,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:49,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799685351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:49,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:49,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264949351] [2022-11-21 13:41:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:49,384 INFO L87 Difference]: Start difference. First operand 580 states and 960 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:49,469 INFO L93 Difference]: Finished difference Result 1151 states and 1912 transitions. [2022-11-21 13:41:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:41:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-11-21 13:41:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:49,476 INFO L225 Difference]: With dead ends: 1151 [2022-11-21 13:41:49,476 INFO L226 Difference]: Without dead ends: 580 [2022-11-21 13:41:49,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:49,483 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 12 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:49,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2834 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:41:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-21 13:41:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-11-21 13:41:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.6821192052980132) internal successors, (762), 474 states have internal predecessors, (762), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-21 13:41:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 959 transitions. [2022-11-21 13:41:49,525 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 959 transitions. Word has length 87 [2022-11-21 13:41:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:49,525 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 959 transitions. [2022-11-21 13:41:49,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 959 transitions. [2022-11-21 13:41:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 13:41:49,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:49,528 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:49,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:49,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1020101156, now seen corresponding path program 1 times [2022-11-21 13:41:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:49,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939974053] [2022-11-21 13:41:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 13:41:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 13:41:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:50,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939974053] [2022-11-21 13:41:50,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939974053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:50,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106025779] [2022-11-21 13:41:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:50,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:50,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:50,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:41:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:50,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:50,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:41:50,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:50,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106025779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:50,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:50,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:50,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763616010] [2022-11-21 13:41:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:50,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:50,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:50,781 INFO L87 Difference]: Start difference. First operand 580 states and 959 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:50,858 INFO L93 Difference]: Finished difference Result 1158 states and 1919 transitions. [2022-11-21 13:41:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:41:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-11-21 13:41:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:50,863 INFO L225 Difference]: With dead ends: 1158 [2022-11-21 13:41:50,863 INFO L226 Difference]: Without dead ends: 589 [2022-11-21 13:41:50,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:50,867 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 20 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:50,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2834 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:41:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-21 13:41:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-11-21 13:41:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6789587852494576) internal successors, (774), 482 states have internal predecessors, (774), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-21 13:41:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 971 transitions. [2022-11-21 13:41:50,893 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 971 transitions. Word has length 89 [2022-11-21 13:41:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:50,893 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 971 transitions. [2022-11-21 13:41:50,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 971 transitions. [2022-11-21 13:41:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 13:41:50,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:50,896 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:50,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:51,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:51,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1365390302, now seen corresponding path program 1 times [2022-11-21 13:41:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:51,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960533353] [2022-11-21 13:41:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:41:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:41:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 13:41:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:51,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960533353] [2022-11-21 13:41:51,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960533353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:51,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821280560] [2022-11-21 13:41:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:51,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:51,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:51,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:41:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:52,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:41:52,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:52,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821280560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:52,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:52,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:52,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523048873] [2022-11-21 13:41:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:52,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:52,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:52,141 INFO L87 Difference]: Start difference. First operand 589 states and 971 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:52,216 INFO L93 Difference]: Finished difference Result 1160 states and 1920 transitions. [2022-11-21 13:41:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:41:52,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-11-21 13:41:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:52,220 INFO L225 Difference]: With dead ends: 1160 [2022-11-21 13:41:52,221 INFO L226 Difference]: Without dead ends: 589 [2022-11-21 13:41:52,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:52,224 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 18 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:52,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2834 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:41:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-21 13:41:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-11-21 13:41:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6767895878524945) internal successors, (773), 482 states have internal predecessors, (773), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-21 13:41:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 970 transitions. [2022-11-21 13:41:52,247 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 970 transitions. Word has length 90 [2022-11-21 13:41:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:52,247 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 970 transitions. [2022-11-21 13:41:52,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 970 transitions. [2022-11-21 13:41:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:41:52,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:52,250 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:52,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:52,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:52,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1167027432, now seen corresponding path program 1 times [2022-11-21 13:41:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:52,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284400384] [2022-11-21 13:41:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:41:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 13:41:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 13:41:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:53,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284400384] [2022-11-21 13:41:53,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284400384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:53,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648167732] [2022-11-21 13:41:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:53,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:53,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:53,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:41:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:53,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:53,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:41:53,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:53,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648167732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:53,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19185270] [2022-11-21 13:41:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:53,424 INFO L87 Difference]: Start difference. First operand 589 states and 970 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:53,493 INFO L93 Difference]: Finished difference Result 1160 states and 1919 transitions. [2022-11-21 13:41:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:41:53,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-11-21 13:41:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:53,498 INFO L225 Difference]: With dead ends: 1160 [2022-11-21 13:41:53,498 INFO L226 Difference]: Without dead ends: 589 [2022-11-21 13:41:53,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:53,502 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 17 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:53,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2834 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:41:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-21 13:41:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-11-21 13:41:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6746203904555315) internal successors, (772), 482 states have internal predecessors, (772), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-21 13:41:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 969 transitions. [2022-11-21 13:41:53,523 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 969 transitions. Word has length 91 [2022-11-21 13:41:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:53,524 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 969 transitions. [2022-11-21 13:41:53,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 969 transitions. [2022-11-21 13:41:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 13:41:53,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:53,526 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:53,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:53,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:53,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:53,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1535807462, now seen corresponding path program 1 times [2022-11-21 13:41:53,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:53,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574230662] [2022-11-21 13:41:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:53,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:41:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 13:41:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 13:41:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:41:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:54,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574230662] [2022-11-21 13:41:54,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574230662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:54,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67913467] [2022-11-21 13:41:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:54,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:54,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:54,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:41:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:54,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:41:54,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:41:54,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:54,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67913467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:54,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:54,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-21 13:41:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099409052] [2022-11-21 13:41:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:41:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:41:54,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:41:54,930 INFO L87 Difference]: Start difference. First operand 589 states and 969 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:41:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:55,072 INFO L93 Difference]: Finished difference Result 1179 states and 1949 transitions. [2022-11-21 13:41:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:41:55,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-21 13:41:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:55,079 INFO L225 Difference]: With dead ends: 1179 [2022-11-21 13:41:55,079 INFO L226 Difference]: Without dead ends: 612 [2022-11-21 13:41:55,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:41:55,083 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 148 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:55,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5575 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:41:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-21 13:41:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 608. [2022-11-21 13:41:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.6729559748427674) internal successors, (798), 500 states have internal predecessors, (798), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-11-21 13:41:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1000 transitions. [2022-11-21 13:41:55,141 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1000 transitions. Word has length 92 [2022-11-21 13:41:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:55,141 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1000 transitions. [2022-11-21 13:41:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:41:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1000 transitions. [2022-11-21 13:41:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 13:41:55,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:55,144 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:55,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:55,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:55,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1892107609, now seen corresponding path program 1 times [2022-11-21 13:41:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:55,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620181991] [2022-11-21 13:41:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:41:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 13:41:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 13:41:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:41:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620181991] [2022-11-21 13:41:55,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620181991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666411025] [2022-11-21 13:41:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:55,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:55,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:55,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:41:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:56,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:41:56,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:56,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666411025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:56,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:56,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:56,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397095884] [2022-11-21 13:41:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:56,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:56,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:56,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:56,266 INFO L87 Difference]: Start difference. First operand 608 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:56,416 INFO L93 Difference]: Finished difference Result 1220 states and 2023 transitions. [2022-11-21 13:41:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:41:56,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-11-21 13:41:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:56,423 INFO L225 Difference]: With dead ends: 1220 [2022-11-21 13:41:56,423 INFO L226 Difference]: Without dead ends: 608 [2022-11-21 13:41:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:56,455 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 135 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:56,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2651 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:41:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-21 13:41:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-21 13:41:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.6624737945492662) internal successors, (793), 500 states have internal predecessors, (793), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-11-21 13:41:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 995 transitions. [2022-11-21 13:41:56,480 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 995 transitions. Word has length 92 [2022-11-21 13:41:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:56,481 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 995 transitions. [2022-11-21 13:41:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 995 transitions. [2022-11-21 13:41:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-21 13:41:56,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:56,483 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:56,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 13:41:56,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash 976119685, now seen corresponding path program 1 times [2022-11-21 13:41:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:56,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493974059] [2022-11-21 13:41:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:41:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 13:41:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 13:41:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:57,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:41:57,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:57,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493974059] [2022-11-21 13:41:57,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493974059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304261618] [2022-11-21 13:41:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:57,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:57,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:57,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:41:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:57,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:57,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:41:57,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:57,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304261618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:57,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:57,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:57,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804892140] [2022-11-21 13:41:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:57,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:57,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:57,598 INFO L87 Difference]: Start difference. First operand 608 states and 995 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:57,748 INFO L93 Difference]: Finished difference Result 1220 states and 2013 transitions. [2022-11-21 13:41:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:41:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-11-21 13:41:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:57,759 INFO L225 Difference]: With dead ends: 1220 [2022-11-21 13:41:57,759 INFO L226 Difference]: Without dead ends: 608 [2022-11-21 13:41:57,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:57,786 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 129 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:57,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2651 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:41:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-21 13:41:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-21 13:41:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.6519916142557651) internal successors, (788), 500 states have internal predecessors, (788), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-11-21 13:41:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 990 transitions. [2022-11-21 13:41:57,826 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 990 transitions. Word has length 94 [2022-11-21 13:41:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:57,827 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 990 transitions. [2022-11-21 13:41:57,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 990 transitions. [2022-11-21 13:41:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 13:41:57,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:57,830 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:57,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-21 13:41:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:58,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1819243015, now seen corresponding path program 1 times [2022-11-21 13:41:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743312434] [2022-11-21 13:41:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:41:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:41:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 13:41:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:41:58,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:58,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743312434] [2022-11-21 13:41:58,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743312434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644049823] [2022-11-21 13:41:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:58,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:58,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:58,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 13:41:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:41:59,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:41:59,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:59,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644049823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:59,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:59,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:41:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619731100] [2022-11-21 13:41:59,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:59,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:41:59,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:41:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:41:59,070 INFO L87 Difference]: Start difference. First operand 608 states and 990 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:41:59,269 INFO L93 Difference]: Finished difference Result 1256 states and 2061 transitions. [2022-11-21 13:41:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:41:59,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-11-21 13:41:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:41:59,275 INFO L225 Difference]: With dead ends: 1256 [2022-11-21 13:41:59,275 INFO L226 Difference]: Without dead ends: 674 [2022-11-21 13:41:59,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:41:59,279 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 179 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:41:59,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2661 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:41:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-21 13:41:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 659. [2022-11-21 13:41:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.6565464895635673) internal successors, (873), 550 states have internal predecessors, (873), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-21 13:41:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1074 transitions. [2022-11-21 13:41:59,303 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1074 transitions. Word has length 96 [2022-11-21 13:41:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:41:59,304 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1074 transitions. [2022-11-21 13:41:59,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:41:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1074 transitions. [2022-11-21 13:41:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:41:59,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:41:59,306 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:41:59,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:59,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 13:41:59,514 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:41:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash -469229833, now seen corresponding path program 1 times [2022-11-21 13:41:59,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:59,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132651201] [2022-11-21 13:41:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:41:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:41:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:41:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:41:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:41:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:42:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 13:42:00,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132651201] [2022-11-21 13:42:00,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132651201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:00,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819883640] [2022-11-21 13:42:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:00,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:00,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:00,104 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:00,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 13:42:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:00,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:42:00,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:42:00,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:00,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819883640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:00,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:00,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-21 13:42:00,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201483500] [2022-11-21 13:42:00,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:42:00,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:42:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:42:00,579 INFO L87 Difference]: Start difference. First operand 659 states and 1074 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:00,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:00,787 INFO L93 Difference]: Finished difference Result 1248 states and 2041 transitions. [2022-11-21 13:42:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:42:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-11-21 13:42:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:00,793 INFO L225 Difference]: With dead ends: 1248 [2022-11-21 13:42:00,793 INFO L226 Difference]: Without dead ends: 681 [2022-11-21 13:42:00,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:00,798 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 177 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6389 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:00,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6389 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-21 13:42:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 659. [2022-11-21 13:42:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.6565464895635673) internal successors, (873), 550 states have internal predecessors, (873), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-21 13:42:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1074 transitions. [2022-11-21 13:42:00,829 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1074 transitions. Word has length 97 [2022-11-21 13:42:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:00,829 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1074 transitions. [2022-11-21 13:42:00,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1074 transitions. [2022-11-21 13:42:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:42:00,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:00,832 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:00,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 13:42:01,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash 433736727, now seen corresponding path program 1 times [2022-11-21 13:42:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:01,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080337331] [2022-11-21 13:42:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:01,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:42:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:42:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:01,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080337331] [2022-11-21 13:42:01,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080337331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:01,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078254127] [2022-11-21 13:42:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:01,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:01,604 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:01,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 13:42:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:01,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:42:01,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:42:02,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:02,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078254127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:02,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:02,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-21 13:42:02,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024066842] [2022-11-21 13:42:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:02,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:42:02,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:02,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:42:02,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:42:02,009 INFO L87 Difference]: Start difference. First operand 659 states and 1074 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:42:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:02,191 INFO L93 Difference]: Finished difference Result 1256 states and 2059 transitions. [2022-11-21 13:42:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:42:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-11-21 13:42:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:02,197 INFO L225 Difference]: With dead ends: 1256 [2022-11-21 13:42:02,197 INFO L226 Difference]: Without dead ends: 659 [2022-11-21 13:42:02,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:42:02,201 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 173 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:02,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2661 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-21 13:42:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-11-21 13:42:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.6470588235294117) internal successors, (868), 550 states have internal predecessors, (868), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-21 13:42:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1069 transitions. [2022-11-21 13:42:02,232 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1069 transitions. Word has length 97 [2022-11-21 13:42:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:02,234 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1069 transitions. [2022-11-21 13:42:02,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:42:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1069 transitions. [2022-11-21 13:42:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:42:02,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:02,237 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:02,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:02,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 13:42:02,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1040481066, now seen corresponding path program 1 times [2022-11-21 13:42:02,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:02,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110717725] [2022-11-21 13:42:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:02,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:42:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 13:42:03,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:03,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110717725] [2022-11-21 13:42:03,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110717725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:03,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520197900] [2022-11-21 13:42:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:03,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:03,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:03,021 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:03,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 13:42:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:03,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:42:03,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:42:03,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:03,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520197900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:03,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:03,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-21 13:42:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716191271] [2022-11-21 13:42:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:42:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:42:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:03,475 INFO L87 Difference]: Start difference. First operand 659 states and 1069 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:03,605 INFO L93 Difference]: Finished difference Result 1183 states and 1933 transitions. [2022-11-21 13:42:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:42:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-11-21 13:42:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:03,611 INFO L225 Difference]: With dead ends: 1183 [2022-11-21 13:42:03,612 INFO L226 Difference]: Without dead ends: 683 [2022-11-21 13:42:03,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:03,616 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 134 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:03,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5534 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-21 13:42:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 678. [2022-11-21 13:42:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6464088397790055) internal successors, (894), 568 states have internal predecessors, (894), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-21 13:42:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1099 transitions. [2022-11-21 13:42:03,642 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1099 transitions. Word has length 97 [2022-11-21 13:42:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:03,642 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1099 transitions. [2022-11-21 13:42:03,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1099 transitions. [2022-11-21 13:42:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-21 13:42:03,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:03,645 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:03,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:03,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 13:42:03,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:03,858 INFO L85 PathProgramCache]: Analyzing trace with hash 658161361, now seen corresponding path program 1 times [2022-11-21 13:42:03,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:03,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258906081] [2022-11-21 13:42:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:42:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 13:42:04,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258906081] [2022-11-21 13:42:04,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258906081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:04,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493197200] [2022-11-21 13:42:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:04,503 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:04,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 13:42:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:42:04,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:42:05,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:05,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493197200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:05,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:05,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-21 13:42:05,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846316860] [2022-11-21 13:42:05,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:05,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:42:05,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:42:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:05,017 INFO L87 Difference]: Start difference. First operand 678 states and 1099 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:05,160 INFO L93 Difference]: Finished difference Result 1213 states and 1984 transitions. [2022-11-21 13:42:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:42:05,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-21 13:42:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:05,165 INFO L225 Difference]: With dead ends: 1213 [2022-11-21 13:42:05,168 INFO L226 Difference]: Without dead ends: 713 [2022-11-21 13:42:05,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:05,172 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 143 mSDsluCounter, 4584 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5524 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:05,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5524 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-21 13:42:05,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 678. [2022-11-21 13:42:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6464088397790055) internal successors, (894), 568 states have internal predecessors, (894), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-21 13:42:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1099 transitions. [2022-11-21 13:42:05,200 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1099 transitions. Word has length 98 [2022-11-21 13:42:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:05,200 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1099 transitions. [2022-11-21 13:42:05,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1099 transitions. [2022-11-21 13:42:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-21 13:42:05,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:05,204 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:05,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:05,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash 480377681, now seen corresponding path program 1 times [2022-11-21 13:42:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:05,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372366932] [2022-11-21 13:42:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:42:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 13:42:05,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:05,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372366932] [2022-11-21 13:42:05,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372366932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:05,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845312754] [2022-11-21 13:42:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:05,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:05,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:05,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:05,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 13:42:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:42:06,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:42:06,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:06,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845312754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:06,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:06,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-21 13:42:06,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563386200] [2022-11-21 13:42:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:06,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:42:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:42:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:06,466 INFO L87 Difference]: Start difference. First operand 678 states and 1099 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:06,668 INFO L93 Difference]: Finished difference Result 1198 states and 1958 transitions. [2022-11-21 13:42:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:42:06,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-21 13:42:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:06,673 INFO L225 Difference]: With dead ends: 1198 [2022-11-21 13:42:06,673 INFO L226 Difference]: Without dead ends: 698 [2022-11-21 13:42:06,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:42:06,678 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 177 mSDsluCounter, 5467 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6397 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:06,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6397 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-21 13:42:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 678. [2022-11-21 13:42:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6464088397790055) internal successors, (894), 568 states have internal predecessors, (894), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-21 13:42:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1099 transitions. [2022-11-21 13:42:06,707 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1099 transitions. Word has length 98 [2022-11-21 13:42:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:06,707 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1099 transitions. [2022-11-21 13:42:06,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1099 transitions. [2022-11-21 13:42:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-21 13:42:06,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:06,710 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:06,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:06,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 13:42:06,917 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash 961831970, now seen corresponding path program 1 times [2022-11-21 13:42:06,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:06,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986525799] [2022-11-21 13:42:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:42:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:42:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:42:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986525799] [2022-11-21 13:42:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986525799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419095349] [2022-11-21 13:42:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:07,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:07,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:07,450 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:07,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 13:42:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:07,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:42:07,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:42:07,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:07,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419095349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:07,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:07,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-21 13:42:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044948790] [2022-11-21 13:42:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:07,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:42:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:42:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:42:07,840 INFO L87 Difference]: Start difference. First operand 678 states and 1099 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:42:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:07,906 INFO L93 Difference]: Finished difference Result 1250 states and 2043 transitions. [2022-11-21 13:42:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:42:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-11-21 13:42:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:07,912 INFO L225 Difference]: With dead ends: 1250 [2022-11-21 13:42:07,912 INFO L226 Difference]: Without dead ends: 678 [2022-11-21 13:42:07,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:42:07,934 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 23 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:07,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2803 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:42:07,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-11-21 13:42:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2022-11-21 13:42:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6390423572744015) internal successors, (890), 568 states have internal predecessors, (890), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-21 13:42:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1095 transitions. [2022-11-21 13:42:07,958 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1095 transitions. Word has length 98 [2022-11-21 13:42:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:07,958 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1095 transitions. [2022-11-21 13:42:07,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:42:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1095 transitions. [2022-11-21 13:42:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-21 13:42:07,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:07,961 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:07,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:08,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 13:42:08,169 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash 617575246, now seen corresponding path program 1 times [2022-11-21 13:42:08,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:08,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11375731] [2022-11-21 13:42:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 13:42:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-21 13:42:08,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:08,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11375731] [2022-11-21 13:42:08,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11375731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648227684] [2022-11-21 13:42:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:08,761 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:08,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 13:42:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:09,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:42:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:42:09,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:09,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648227684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:09,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:09,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-21 13:42:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40511449] [2022-11-21 13:42:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:09,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:42:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:42:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:42:09,282 INFO L87 Difference]: Start difference. First operand 678 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:09,477 INFO L93 Difference]: Finished difference Result 1198 states and 1955 transitions. [2022-11-21 13:42:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:42:09,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-21 13:42:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:09,483 INFO L225 Difference]: With dead ends: 1198 [2022-11-21 13:42:09,483 INFO L226 Difference]: Without dead ends: 698 [2022-11-21 13:42:09,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:42:09,487 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 185 mSDsluCounter, 5430 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6354 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:09,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6354 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-21 13:42:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 678. [2022-11-21 13:42:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6390423572744015) internal successors, (890), 568 states have internal predecessors, (890), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-21 13:42:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1095 transitions. [2022-11-21 13:42:09,514 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1095 transitions. Word has length 99 [2022-11-21 13:42:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:09,515 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1095 transitions. [2022-11-21 13:42:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1095 transitions. [2022-11-21 13:42:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-21 13:42:09,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:09,518 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:09,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:09,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 13:42:09,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash -512634378, now seen corresponding path program 1 times [2022-11-21 13:42:09,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:09,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221283111] [2022-11-21 13:42:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:09,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-21 13:42:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221283111] [2022-11-21 13:42:10,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221283111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:10,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378932438] [2022-11-21 13:42:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:10,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:10,377 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:10,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 13:42:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:10,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:42:10,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 13:42:10,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:10,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378932438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:10,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:10,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-21 13:42:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024242873] [2022-11-21 13:42:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:42:10,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:42:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:10,768 INFO L87 Difference]: Start difference. First operand 678 states and 1095 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:42:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:10,857 INFO L93 Difference]: Finished difference Result 1306 states and 2125 transitions. [2022-11-21 13:42:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:42:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-11-21 13:42:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:10,862 INFO L225 Difference]: With dead ends: 1306 [2022-11-21 13:42:10,863 INFO L226 Difference]: Without dead ends: 714 [2022-11-21 13:42:10,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:10,866 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 38 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:10,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2779 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:42:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-21 13:42:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2022-11-21 13:42:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 567 states have (on average 1.619047619047619) internal successors, (918), 592 states have internal predecessors, (918), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-21 13:42:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1123 transitions. [2022-11-21 13:42:10,897 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1123 transitions. Word has length 100 [2022-11-21 13:42:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:10,897 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1123 transitions. [2022-11-21 13:42:10,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 13:42:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1123 transitions. [2022-11-21 13:42:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-21 13:42:10,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:10,900 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:42:10,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 13:42:11,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1107194685, now seen corresponding path program 1 times [2022-11-21 13:42:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:11,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965871141] [2022-11-21 13:42:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:42:11,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:11,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965871141] [2022-11-21 13:42:11,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965871141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:11,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616684632] [2022-11-21 13:42:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:11,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:11,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:11,700 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:11,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-21 13:42:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:12,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:42:12,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 13:42:12,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:12,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616684632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:12,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:12,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-11-21 13:42:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035851719] [2022-11-21 13:42:12,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:42:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:42:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:12,567 INFO L87 Difference]: Start difference. First operand 702 states and 1123 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:16,635 INFO L93 Difference]: Finished difference Result 2274 states and 3759 transitions. [2022-11-21 13:42:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:42:16,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-21 13:42:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:16,657 INFO L225 Difference]: With dead ends: 2274 [2022-11-21 13:42:16,657 INFO L226 Difference]: Without dead ends: 1779 [2022-11-21 13:42:16,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:16,661 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 2954 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 4214 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 4214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:16,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3136 Valid, 1794 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 4214 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 13:42:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-11-21 13:42:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1592. [2022-11-21 13:42:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1270 states have (on average 1.6590551181102362) internal successors, (2107), 1313 states have internal predecessors, (2107), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2022-11-21 13:42:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2628 transitions. [2022-11-21 13:42:16,766 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2628 transitions. Word has length 100 [2022-11-21 13:42:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:16,767 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2628 transitions. [2022-11-21 13:42:16,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 13:42:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2628 transitions. [2022-11-21 13:42:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 13:42:16,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:16,775 INFO L195 NwaCegarLoop]: trace histogram [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 13:42:16,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:16,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:16,982 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:16,983 INFO L85 PathProgramCache]: Analyzing trace with hash 284240713, now seen corresponding path program 1 times [2022-11-21 13:42:16,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:16,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608389617] [2022-11-21 13:42:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:16,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:42:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 13:42:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:42:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:42:17,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:17,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608389617] [2022-11-21 13:42:17,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608389617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:17,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137212454] [2022-11-21 13:42:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:17,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:17,842 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:17,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-21 13:42:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:18,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:42:18,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 13:42:18,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:18,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137212454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:18,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:18,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-21 13:42:18,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219090442] [2022-11-21 13:42:18,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:42:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:42:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:18,291 INFO L87 Difference]: Start difference. First operand 1592 states and 2628 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 13:42:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:18,581 INFO L93 Difference]: Finished difference Result 3253 states and 5443 transitions. [2022-11-21 13:42:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:42:18,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-21 13:42:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:18,595 INFO L225 Difference]: With dead ends: 3253 [2022-11-21 13:42:18,595 INFO L226 Difference]: Without dead ends: 1869 [2022-11-21 13:42:18,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:42:18,604 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 210 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:18,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 3844 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:42:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-11-21 13:42:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1601. [2022-11-21 13:42:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1279 states have (on average 1.6544175136825645) internal successors, (2116), 1322 states have internal predecessors, (2116), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2022-11-21 13:42:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2637 transitions. [2022-11-21 13:42:18,693 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2637 transitions. Word has length 139 [2022-11-21 13:42:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:18,694 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2637 transitions. [2022-11-21 13:42:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 13:42:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2637 transitions. [2022-11-21 13:42:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-21 13:42:18,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:18,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:18,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-21 13:42:18,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:18,908 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash -320954279, now seen corresponding path program 1 times [2022-11-21 13:42:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:18,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916186549] [2022-11-21 13:42:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:18,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 13:42:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916186549] [2022-11-21 13:42:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916186549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550839183] [2022-11-21 13:42:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:19,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:19,770 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:19,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 13:42:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:20,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:42:20,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:42:20,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:20,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550839183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:20,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:20,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-11-21 13:42:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101431374] [2022-11-21 13:42:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:42:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:42:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:20,419 INFO L87 Difference]: Start difference. First operand 1601 states and 2637 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 13:42:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:20,868 INFO L93 Difference]: Finished difference Result 1683 states and 2765 transitions. [2022-11-21 13:42:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:42:20,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2022-11-21 13:42:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:20,882 INFO L225 Difference]: With dead ends: 1683 [2022-11-21 13:42:20,882 INFO L226 Difference]: Without dead ends: 1668 [2022-11-21 13:42:20,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:20,885 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 948 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:20,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1688 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:42:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-21 13:42:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1607. [2022-11-21 13:42:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1285 states have (on average 1.65136186770428) internal successors, (2122), 1328 states have internal predecessors, (2122), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2022-11-21 13:42:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2643 transitions. [2022-11-21 13:42:20,966 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2643 transitions. Word has length 142 [2022-11-21 13:42:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:20,966 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2643 transitions. [2022-11-21 13:42:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 13:42:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2643 transitions. [2022-11-21 13:42:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 13:42:20,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:20,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:20,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:21,180 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1108236730, now seen corresponding path program 1 times [2022-11-21 13:42:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:21,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565931424] [2022-11-21 13:42:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 13:42:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:42:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 13:42:21,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:21,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565931424] [2022-11-21 13:42:21,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565931424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:21,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775429380] [2022-11-21 13:42:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:21,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:22,000 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:22,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-21 13:42:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:22,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:42:22,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:42:22,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:22,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775429380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:22,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:22,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-21 13:42:22,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123853958] [2022-11-21 13:42:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:42:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:42:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:42:22,667 INFO L87 Difference]: Start difference. First operand 1607 states and 2643 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-21 13:42:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:26,353 INFO L93 Difference]: Finished difference Result 4298 states and 7119 transitions. [2022-11-21 13:42:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 13:42:26,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2022-11-21 13:42:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:26,374 INFO L225 Difference]: With dead ends: 4298 [2022-11-21 13:42:26,374 INFO L226 Difference]: Without dead ends: 2732 [2022-11-21 13:42:26,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-11-21 13:42:26,383 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1809 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 5417 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 5763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 5417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:26,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 2207 Invalid, 5763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 5417 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 13:42:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-11-21 13:42:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2503. [2022-11-21 13:42:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1974 states have (on average 1.6332320162107397) internal successors, (3224), 2026 states have internal predecessors, (3224), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2022-11-21 13:42:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4107 transitions. [2022-11-21 13:42:26,548 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4107 transitions. Word has length 147 [2022-11-21 13:42:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:26,548 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4107 transitions. [2022-11-21 13:42:26,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-21 13:42:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4107 transitions. [2022-11-21 13:42:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-21 13:42:26,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:26,556 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:26,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:26,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:26,765 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:26,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:26,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2118703028, now seen corresponding path program 1 times [2022-11-21 13:42:26,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:26,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563807304] [2022-11-21 13:42:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 13:42:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563807304] [2022-11-21 13:42:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563807304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652877806] [2022-11-21 13:42:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:27,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:27,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:27,525 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:27,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-21 13:42:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:27,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:42:27,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:42:28,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:28,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652877806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:28,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:28,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-21 13:42:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250881143] [2022-11-21 13:42:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:42:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:42:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:42:28,047 INFO L87 Difference]: Start difference. First operand 2503 states and 4107 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:42:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:28,588 INFO L93 Difference]: Finished difference Result 2679 states and 4349 transitions. [2022-11-21 13:42:28,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:42:28,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-11-21 13:42:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:28,612 INFO L225 Difference]: With dead ends: 2679 [2022-11-21 13:42:28,613 INFO L226 Difference]: Without dead ends: 2664 [2022-11-21 13:42:28,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:42:28,616 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 923 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 3778 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:28,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 3778 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:42:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-11-21 13:42:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2605. [2022-11-21 13:42:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2052 states have (on average 1.6237816764132553) internal successors, (3332), 2104 states have internal predecessors, (3332), 436 states have call successors, (436), 99 states have call predecessors, (436), 116 states have return successors, (482), 412 states have call predecessors, (482), 431 states have call successors, (482) [2022-11-21 13:42:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4250 transitions. [2022-11-21 13:42:28,792 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4250 transitions. Word has length 148 [2022-11-21 13:42:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:28,792 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4250 transitions. [2022-11-21 13:42:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:42:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4250 transitions. [2022-11-21 13:42:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 13:42:28,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:28,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:28,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:29,010 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:29,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1262182809, now seen corresponding path program 1 times [2022-11-21 13:42:29,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:29,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734584652] [2022-11-21 13:42:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:29,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:42:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:42:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:42:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 13:42:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:29,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734584652] [2022-11-21 13:42:29,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734584652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:29,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915609149] [2022-11-21 13:42:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:29,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:29,790 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:29,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-21 13:42:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:30,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:42:30,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 13:42:30,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:30,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915609149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:30,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:30,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-11-21 13:42:30,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91353403] [2022-11-21 13:42:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:30,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:42:30,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:42:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:42:30,246 INFO L87 Difference]: Start difference. First operand 2605 states and 4250 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 13:42:30,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:30,415 INFO L93 Difference]: Finished difference Result 5184 states and 8470 transitions. [2022-11-21 13:42:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:42:30,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2022-11-21 13:42:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:30,440 INFO L225 Difference]: With dead ends: 5184 [2022-11-21 13:42:30,440 INFO L226 Difference]: Without dead ends: 2574 [2022-11-21 13:42:30,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:30,451 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 11 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:30,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2805 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:42:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-21 13:42:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2574. [2022-11-21 13:42:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2024 states have (on average 1.6235177865612649) internal successors, (3286), 2074 states have internal predecessors, (3286), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2022-11-21 13:42:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 4200 transitions. [2022-11-21 13:42:30,605 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 4200 transitions. Word has length 159 [2022-11-21 13:42:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:30,606 INFO L495 AbstractCegarLoop]: Abstraction has 2574 states and 4200 transitions. [2022-11-21 13:42:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 13:42:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 4200 transitions. [2022-11-21 13:42:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-21 13:42:30,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:30,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:30,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:30,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1250629604, now seen corresponding path program 1 times [2022-11-21 13:42:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369998117] [2022-11-21 13:42:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:42:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:42:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:42:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 13:42:31,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:31,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369998117] [2022-11-21 13:42:31,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369998117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:31,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535953590] [2022-11-21 13:42:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:31,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:31,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:31,648 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:31,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-21 13:42:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:32,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:42:32,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:42:32,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:32,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535953590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:32,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:32,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-21 13:42:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126301132] [2022-11-21 13:42:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:42:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:42:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:42:32,131 INFO L87 Difference]: Start difference. First operand 2574 states and 4200 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:42:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:32,327 INFO L93 Difference]: Finished difference Result 5117 states and 8364 transitions. [2022-11-21 13:42:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:42:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2022-11-21 13:42:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:32,341 INFO L225 Difference]: With dead ends: 5117 [2022-11-21 13:42:32,341 INFO L226 Difference]: Without dead ends: 2574 [2022-11-21 13:42:32,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:42:32,352 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 143 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:32,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5561 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-21 13:42:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2553. [2022-11-21 13:42:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2003 states have (on average 1.6235646530204693) internal successors, (3252), 2053 states have internal predecessors, (3252), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2022-11-21 13:42:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4166 transitions. [2022-11-21 13:42:32,502 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4166 transitions. Word has length 161 [2022-11-21 13:42:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:32,503 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4166 transitions. [2022-11-21 13:42:32,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:42:32,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4166 transitions. [2022-11-21 13:42:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-21 13:42:32,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:32,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:32,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-21 13:42:32,717 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:32,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1622556927, now seen corresponding path program 1 times [2022-11-21 13:42:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433494636] [2022-11-21 13:42:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:42:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:42:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:42:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 13:42:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:33,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433494636] [2022-11-21 13:42:33,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433494636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:33,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763377779] [2022-11-21 13:42:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:33,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:33,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:33,833 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:33,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-21 13:42:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:34,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:42:34,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:42:34,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:34,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763377779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:34,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:34,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-21 13:42:34,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508459679] [2022-11-21 13:42:34,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:42:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:42:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:42:34,302 INFO L87 Difference]: Start difference. First operand 2553 states and 4166 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 13:42:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:34,505 INFO L93 Difference]: Finished difference Result 5075 states and 8298 transitions. [2022-11-21 13:42:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:42:34,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-11-21 13:42:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:34,519 INFO L225 Difference]: With dead ends: 5075 [2022-11-21 13:42:34,519 INFO L226 Difference]: Without dead ends: 2553 [2022-11-21 13:42:34,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:42:34,529 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 176 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:34,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2638 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:42:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-11-21 13:42:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2553. [2022-11-21 13:42:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2003 states have (on average 1.6230654018971542) internal successors, (3251), 2053 states have internal predecessors, (3251), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2022-11-21 13:42:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4165 transitions. [2022-11-21 13:42:34,732 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4165 transitions. Word has length 163 [2022-11-21 13:42:34,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:34,732 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4165 transitions. [2022-11-21 13:42:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 13:42:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4165 transitions. [2022-11-21 13:42:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-21 13:42:34,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:34,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:34,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:34,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-21 13:42:34,946 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:34,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:34,947 INFO L85 PathProgramCache]: Analyzing trace with hash 229539051, now seen corresponding path program 1 times [2022-11-21 13:42:34,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:34,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850355587] [2022-11-21 13:42:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:34,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:42:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:42:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 13:42:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:35,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850355587] [2022-11-21 13:42:35,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850355587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:35,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:42:35,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:42:35,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785047141] [2022-11-21 13:42:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:35,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:42:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:42:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:42:35,705 INFO L87 Difference]: Start difference. First operand 2553 states and 4165 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 13:42:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:42:46,192 INFO L93 Difference]: Finished difference Result 5979 states and 9887 transitions. [2022-11-21 13:42:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:42:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2022-11-21 13:42:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:42:46,210 INFO L225 Difference]: With dead ends: 5979 [2022-11-21 13:42:46,210 INFO L226 Difference]: Without dead ends: 3428 [2022-11-21 13:42:46,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:42:46,219 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1059 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 4403 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 4679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 4403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:42:46,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1611 Invalid, 4679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 4403 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-21 13:42:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2022-11-21 13:42:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2513. [2022-11-21 13:42:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1966 states have (on average 1.6215666327568667) internal successors, (3188), 2014 states have internal predecessors, (3188), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2022-11-21 13:42:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4098 transitions. [2022-11-21 13:42:46,996 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4098 transitions. Word has length 164 [2022-11-21 13:42:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:42:46,997 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 4098 transitions. [2022-11-21 13:42:46,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 13:42:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4098 transitions. [2022-11-21 13:42:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-21 13:42:47,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:42:47,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 13:42:47,003 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:42:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1611615097, now seen corresponding path program 1 times [2022-11-21 13:42:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:47,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542353083] [2022-11-21 13:42:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:42:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:42:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:42:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 13:42:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:42:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:42:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:42:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:42:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:42:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:42:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:42:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:42:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:42:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:42:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:42:47,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:47,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542353083] [2022-11-21 13:42:47,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542353083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:47,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:42:47,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:42:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344762263] [2022-11-21 13:42:47,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:47,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:42:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:42:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:42:47,854 INFO L87 Difference]: Start difference. First operand 2513 states and 4098 transitions. Second operand has 11 states, 10 states have (on average 12.1) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:43:00,723 INFO L93 Difference]: Finished difference Result 5858 states and 9686 transitions. [2022-11-21 13:43:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:43:00,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.1) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 165 [2022-11-21 13:43:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:43:00,741 INFO L225 Difference]: With dead ends: 5858 [2022-11-21 13:43:00,741 INFO L226 Difference]: Without dead ends: 3446 [2022-11-21 13:43:00,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:43:00,751 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1139 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 7485 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 7773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 7485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:43:00,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 2539 Invalid, 7773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 7485 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-21 13:43:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2022-11-21 13:43:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2513. [2022-11-21 13:43:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1966 states have (on average 1.621057985757884) internal successors, (3187), 2014 states have internal predecessors, (3187), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2022-11-21 13:43:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4097 transitions. [2022-11-21 13:43:01,275 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4097 transitions. Word has length 165 [2022-11-21 13:43:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:43:01,275 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 4097 transitions. [2022-11-21 13:43:01,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.1) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4097 transitions. [2022-11-21 13:43:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-21 13:43:01,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:43:01,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:01,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 13:43:01,281 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:43:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:01,282 INFO L85 PathProgramCache]: Analyzing trace with hash 865377547, now seen corresponding path program 1 times [2022-11-21 13:43:01,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:01,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249551912] [2022-11-21 13:43:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:43:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:43:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:43:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:43:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:43:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:43:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:43:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:43:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:43:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:43:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:43:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:43:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:43:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:02,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249551912] [2022-11-21 13:43:02,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249551912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:02,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:02,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:43:02,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187589060] [2022-11-21 13:43:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:02,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:43:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:43:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:43:02,129 INFO L87 Difference]: Start difference. First operand 2513 states and 4097 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:43:13,366 INFO L93 Difference]: Finished difference Result 5874 states and 9713 transitions. [2022-11-21 13:43:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:43:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2022-11-21 13:43:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:43:13,381 INFO L225 Difference]: With dead ends: 5874 [2022-11-21 13:43:13,382 INFO L226 Difference]: Without dead ends: 3404 [2022-11-21 13:43:13,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:43:13,389 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1560 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 6856 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 7289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 6856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:43:13,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 2477 Invalid, 7289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 6856 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-21 13:43:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2022-11-21 13:43:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2501. [2022-11-21 13:43:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 1954 states have (on average 1.6238485158648925) internal successors, (3173), 2002 states have internal predecessors, (3173), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2022-11-21 13:43:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 4083 transitions. [2022-11-21 13:43:14,046 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 4083 transitions. Word has length 166 [2022-11-21 13:43:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:43:14,047 INFO L495 AbstractCegarLoop]: Abstraction has 2501 states and 4083 transitions. [2022-11-21 13:43:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 4083 transitions. [2022-11-21 13:43:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-21 13:43:14,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:43:14,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:14,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 13:43:14,053 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:43:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -65572467, now seen corresponding path program 1 times [2022-11-21 13:43:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:14,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595358779] [2022-11-21 13:43:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:43:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:43:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:43:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:43:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:43:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:43:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:43:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:43:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:43:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:43:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:43:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:43:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:43:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:14,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595358779] [2022-11-21 13:43:14,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595358779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:14,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:14,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:43:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337093413] [2022-11-21 13:43:14,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:14,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:43:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:43:14,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:43:14,893 INFO L87 Difference]: Start difference. First operand 2501 states and 4083 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:43:27,089 INFO L93 Difference]: Finished difference Result 5925 states and 9784 transitions. [2022-11-21 13:43:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:43:27,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2022-11-21 13:43:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:43:27,105 INFO L225 Difference]: With dead ends: 5925 [2022-11-21 13:43:27,106 INFO L226 Difference]: Without dead ends: 3461 [2022-11-21 13:43:27,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:43:27,116 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2070 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 6799 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 7380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 6799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:43:27,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 2470 Invalid, 7380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [581 Valid, 6799 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-21 13:43:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-11-21 13:43:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2505. [2022-11-21 13:43:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 1958 states have (on average 1.6220633299284986) internal successors, (3176), 2006 states have internal predecessors, (3176), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2022-11-21 13:43:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4086 transitions. [2022-11-21 13:43:27,931 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4086 transitions. Word has length 166 [2022-11-21 13:43:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:43:27,931 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4086 transitions. [2022-11-21 13:43:27,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4086 transitions. [2022-11-21 13:43:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:43:27,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:43:27,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:27,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 13:43:27,937 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:43:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash -123023872, now seen corresponding path program 1 times [2022-11-21 13:43:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:27,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674134114] [2022-11-21 13:43:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:27,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:43:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:43:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:43:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:43:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:43:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:43:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:43:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:43:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:43:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:43:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:43:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:43:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:43:29,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:29,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674134114] [2022-11-21 13:43:29,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674134114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:29,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:29,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 13:43:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15526358] [2022-11-21 13:43:29,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:29,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:43:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:29,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:43:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:43:29,004 INFO L87 Difference]: Start difference. First operand 2505 states and 4086 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:43:51,312 INFO L93 Difference]: Finished difference Result 7864 states and 13363 transitions. [2022-11-21 13:43:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 13:43:51,313 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 167 [2022-11-21 13:43:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:43:51,333 INFO L225 Difference]: With dead ends: 7864 [2022-11-21 13:43:51,334 INFO L226 Difference]: Without dead ends: 5470 [2022-11-21 13:43:51,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 13:43:51,345 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 3529 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 11116 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3603 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 12343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 11116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:43:51,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3603 Valid, 3468 Invalid, 12343 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1227 Valid, 11116 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2022-11-21 13:43:51,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5470 states. [2022-11-21 13:43:52,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5470 to 4072. [2022-11-21 13:43:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 3173 states have (on average 1.6082571698707848) internal successors, (5103), 3249 states have internal predecessors, (5103), 697 states have call successors, (697), 162 states have call predecessors, (697), 201 states have return successors, (911), 682 states have call predecessors, (911), 692 states have call successors, (911) [2022-11-21 13:43:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 6711 transitions. [2022-11-21 13:43:52,451 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 6711 transitions. Word has length 167 [2022-11-21 13:43:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:43:52,451 INFO L495 AbstractCegarLoop]: Abstraction has 4072 states and 6711 transitions. [2022-11-21 13:43:52,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:43:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 6711 transitions. [2022-11-21 13:43:52,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-21 13:43:52,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:43:52,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 13:43:52,458 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:43:52,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1240639278, now seen corresponding path program 1 times [2022-11-21 13:43:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:52,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800761598] [2022-11-21 13:43:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:52,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:43:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:43:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:43:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:43:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:43:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:43:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:43:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:43:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:43:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:43:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 13:43:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 13:43:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:43:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 13:43:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:43:53,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:53,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800761598] [2022-11-21 13:43:53,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800761598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:53,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:53,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:43:53,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331585808] [2022-11-21 13:43:53,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:53,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:43:53,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:43:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:43:53,515 INFO L87 Difference]: Start difference. First operand 4072 states and 6711 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:44:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:44:15,721 INFO L93 Difference]: Finished difference Result 13546 states and 23841 transitions. [2022-11-21 13:44:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 13:44:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2022-11-21 13:44:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:44:15,772 INFO L225 Difference]: With dead ends: 13546 [2022-11-21 13:44:15,772 INFO L226 Difference]: Without dead ends: 9589 [2022-11-21 13:44:15,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 13:44:15,794 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 4329 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 9487 mSolverCounterSat, 1441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 10928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1441 IncrementalHoareTripleChecker+Valid, 9487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:44:15,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4410 Valid, 3701 Invalid, 10928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1441 Valid, 9487 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-11-21 13:44:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2022-11-21 13:44:17,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 7169. [2022-11-21 13:44:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 5580 states have (on average 1.6041218637992831) internal successors, (8951), 5702 states have internal predecessors, (8951), 1229 states have call successors, (1229), 288 states have call predecessors, (1229), 359 states have return successors, (1892), 1222 states have call predecessors, (1892), 1224 states have call successors, (1892) [2022-11-21 13:44:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 12072 transitions. [2022-11-21 13:44:17,916 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 12072 transitions. Word has length 169 [2022-11-21 13:44:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:44:17,917 INFO L495 AbstractCegarLoop]: Abstraction has 7169 states and 12072 transitions. [2022-11-21 13:44:17,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:44:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 12072 transitions. [2022-11-21 13:44:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-21 13:44:17,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:44:17,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:17,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 13:44:17,925 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:44:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1844009024, now seen corresponding path program 1 times [2022-11-21 13:44:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:17,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971807444] [2022-11-21 13:44:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:44:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:44:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:44:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:44:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:44:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:44:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:44:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:44:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:44:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:44:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 13:44:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 13:44:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:44:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:44:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:44:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:19,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971807444] [2022-11-21 13:44:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971807444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:44:19,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:44:19,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 13:44:19,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997095894] [2022-11-21 13:44:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:44:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:44:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:44:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:44:19,028 INFO L87 Difference]: Start difference. First operand 7169 states and 12072 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-21 13:44:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:44:51,466 INFO L93 Difference]: Finished difference Result 22472 states and 41792 transitions. [2022-11-21 13:44:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-21 13:44:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 170 [2022-11-21 13:44:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:44:51,589 INFO L225 Difference]: With dead ends: 22472 [2022-11-21 13:44:51,589 INFO L226 Difference]: Without dead ends: 15426 [2022-11-21 13:44:51,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=548, Invalid=2208, Unknown=0, NotChecked=0, Total=2756 [2022-11-21 13:44:51,644 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 6368 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 12344 mSolverCounterSat, 2409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6413 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 14753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2409 IncrementalHoareTripleChecker+Valid, 12344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:44:51,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6413 Valid, 4414 Invalid, 14753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2409 Valid, 12344 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2022-11-21 13:44:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2022-11-21 13:44:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 11746. [2022-11-21 13:44:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11746 states, 9122 states have (on average 1.582657311992984) internal successors, (14437), 9280 states have internal predecessors, (14437), 2014 states have call successors, (2014), 480 states have call predecessors, (2014), 609 states have return successors, (3824), 2073 states have call predecessors, (3824), 2009 states have call successors, (3824) [2022-11-21 13:44:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 20275 transitions. [2022-11-21 13:44:55,021 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 20275 transitions. Word has length 170 [2022-11-21 13:44:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:44:55,022 INFO L495 AbstractCegarLoop]: Abstraction has 11746 states and 20275 transitions. [2022-11-21 13:44:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-21 13:44:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 20275 transitions. [2022-11-21 13:44:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-21 13:44:55,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:44:55,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:55,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 13:44:55,029 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:44:55,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1123021479, now seen corresponding path program 1 times [2022-11-21 13:44:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:55,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308186702] [2022-11-21 13:44:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:55,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:44:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:44:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:44:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:44:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:44:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:44:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:55,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:44:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:44:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:44:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:44:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:44:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:44:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 13:44:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:44:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 13:44:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:44:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:56,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308186702] [2022-11-21 13:44:56,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308186702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:44:56,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:44:56,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 13:44:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854408061] [2022-11-21 13:44:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:44:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:44:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:44:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:44:56,203 INFO L87 Difference]: Start difference. First operand 11746 states and 20275 transitions. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 7 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:45:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:26,081 INFO L93 Difference]: Finished difference Result 41425 states and 80143 transitions. [2022-11-21 13:45:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 13:45:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 7 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-11-21 13:45:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:26,423 INFO L225 Difference]: With dead ends: 41425 [2022-11-21 13:45:26,423 INFO L226 Difference]: Without dead ends: 29818 [2022-11-21 13:45:26,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 13:45:26,482 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 3515 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 10583 mSolverCounterSat, 1248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 11831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1248 IncrementalHoareTripleChecker+Valid, 10583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:26,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3593 Valid, 3550 Invalid, 11831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1248 Valid, 10583 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2022-11-21 13:45:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29818 states. [2022-11-21 13:45:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29818 to 23044. [2022-11-21 13:45:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23044 states, 17952 states have (on average 1.584280303030303) internal successors, (28441), 18214 states have internal predecessors, (28441), 3880 states have call successors, (3880), 925 states have call predecessors, (3880), 1211 states have return successors, (8333), 4080 states have call predecessors, (8333), 3875 states have call successors, (8333) [2022-11-21 13:45:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23044 states to 23044 states and 40654 transitions. [2022-11-21 13:45:33,575 INFO L78 Accepts]: Start accepts. Automaton has 23044 states and 40654 transitions. Word has length 172 [2022-11-21 13:45:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:33,576 INFO L495 AbstractCegarLoop]: Abstraction has 23044 states and 40654 transitions. [2022-11-21 13:45:33,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 7 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 13:45:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23044 states and 40654 transitions. [2022-11-21 13:45:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-21 13:45:33,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:33,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:33,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 13:45:33,585 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 836247695, now seen corresponding path program 1 times [2022-11-21 13:45:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:33,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324444274] [2022-11-21 13:45:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:33,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:45:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:45:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:45:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:45:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:45:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 13:45:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:45:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:45:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:45:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:45:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:45:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:45:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:45:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:45:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 13:45:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 13:45:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 13:45:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:45:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:45:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-21 13:45:34,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:34,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324444274] [2022-11-21 13:45:34,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324444274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:34,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459884134] [2022-11-21 13:45:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:34,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:34,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:34,731 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:34,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02ceff2-73cf-46bd-923c-4b9071ef920f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-21 13:45:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:35,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:45:35,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:45:35,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 13:45:36,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459884134] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:36,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:45:36,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15, 6] total 20 [2022-11-21 13:45:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431872571] [2022-11-21 13:45:36,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:36,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:45:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:45:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:45:36,136 INFO L87 Difference]: Start difference. First operand 23044 states and 40654 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-21 13:45:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:55,077 INFO L93 Difference]: Finished difference Result 75052 states and 143937 transitions. [2022-11-21 13:45:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:45:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 180 [2022-11-21 13:45:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:55,398 INFO L225 Difference]: With dead ends: 75052 [2022-11-21 13:45:55,398 INFO L226 Difference]: Without dead ends: 52147 [2022-11-21 13:45:55,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 384 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:45:55,581 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 3181 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:55,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3259 Valid, 2780 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 13:45:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52147 states.