./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 3c1ff6fd56cd2377d464f2b10cb9a0da8b8728fdfad0102577329687d925f1d9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:32:56,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:32:56,584 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:32:56,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:32:56,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:32:56,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:32:56,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:32:56,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:32:56,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:32:56,616 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:32:56,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:32:56,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:32:56,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:32:56,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:32:56,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:32:56,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:32:56,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:32:56,620 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:32:56,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:32:56,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:32:56,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:32:56,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:32:56,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:32:56,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:32:56,623 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:32:56,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:32:56,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:32:56,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:32:56,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:32:56,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:32:56,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:32:56,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:32:56,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:32:56,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:32:56,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:32:56,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:32:56,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:32:56,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:32:56,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:32:56,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:32:56,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:32:56,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:32:56,628 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1ff6fd56cd2377d464f2b10cb9a0da8b8728fdfad0102577329687d925f1d9 [2023-11-29 00:32:56,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:32:56,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:32:56,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:32:56,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:32:56,891 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:32:56,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2023-11-29 00:33:00,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:33:00,402 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:33:00,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2023-11-29 00:33:00,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/data/b8043cbc2/276809af10f948b9bbd39e3ae1461f8f/FLAG38461a71a [2023-11-29 00:33:00,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/data/b8043cbc2/276809af10f948b9bbd39e3ae1461f8f [2023-11-29 00:33:00,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:33:00,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:33:00,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:33:00,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:33:00,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:33:00,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:33:00" (1/1) ... [2023-11-29 00:33:00,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c65d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:00, skipping insertion in model container [2023-11-29 00:33:00,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:33:00" (1/1) ... [2023-11-29 00:33:00,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:33:00,955 WARN L240 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_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c[35995,36008] [2023-11-29 00:33:01,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:33:01,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:33:01,124 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2023-11-29 00:33:01,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [235] [2023-11-29 00:33:01,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [273] [2023-11-29 00:33:01,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [941] [2023-11-29 00:33:01,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1307] [2023-11-29 00:33:01,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1665] [2023-11-29 00:33:01,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1674] [2023-11-29 00:33:01,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1766] [2023-11-29 00:33:01,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1778] [2023-11-29 00:33:01,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1898] [2023-11-29 00:33:01,190 WARN L240 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_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c[35995,36008] [2023-11-29 00:33:01,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:33:01,283 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:33:01,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01 WrapperNode [2023-11-29 00:33:01,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:33:01,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:33:01,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:33:01,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:33:01,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,390 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 921 [2023-11-29 00:33:01,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:33:01,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:33:01,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:33:01,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:33:01,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,453 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-29 00:33:01,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:33:01,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:33:01,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:33:01,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:33:01,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (1/1) ... [2023-11-29 00:33:01,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:33:01,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:33:01,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:33:01,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:33:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:33:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-29 00:33:01,671 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-29 00:33:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-29 00:33:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-29 00:33:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-29 00:33:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-29 00:33:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 00:33:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 00:33:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-29 00:33:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-29 00:33:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 00:33:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 00:33:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 00:33:01,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 00:33:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 00:33:01,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 00:33:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 00:33:01,675 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 00:33:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-29 00:33:01,675 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-29 00:33:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 00:33:01,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 00:33:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 00:33:01,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 00:33:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 00:33:01,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 00:33:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 00:33:01,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 00:33:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-29 00:33:01,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-29 00:33:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 00:33:01,677 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 00:33:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 00:33:01,678 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 00:33:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 00:33:01,678 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 00:33:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 00:33:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 00:33:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 00:33:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 00:33:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:33:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:33:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:33:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:33:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:33:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:33:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 00:33:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 00:33:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 00:33:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 00:33:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 00:33:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 00:33:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 00:33:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 00:33:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 00:33:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 00:33:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 00:33:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 00:33:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 00:33:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 00:33:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-29 00:33:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-29 00:33:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 00:33:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 00:33:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 00:33:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 00:33:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 00:33:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 00:33:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-29 00:33:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-29 00:33:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:33:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:33:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 00:33:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 00:33:01,913 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:33:01,917 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:33:03,142 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:33:03,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:33:03,256 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:33:03,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:33:03 BoogieIcfgContainer [2023-11-29 00:33:03,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:33:03,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:33:03,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:33:03,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:33:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:33:00" (1/3) ... [2023-11-29 00:33:03,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce8a9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:33:03, skipping insertion in model container [2023-11-29 00:33:03,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:33:01" (2/3) ... [2023-11-29 00:33:03,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce8a9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:33:03, skipping insertion in model container [2023-11-29 00:33:03,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:33:03" (3/3) ... [2023-11-29 00:33:03,268 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2023-11-29 00:33:03,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:33:03,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:33:03,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:33:03,372 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=LoopHeads, 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;@73939770, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:33:03,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:33:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 565 states, 435 states have (on average 1.7126436781609196) internal successors, (745), 456 states have internal predecessors, (745), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 00:33:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:33:03,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:03,420 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:03,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -986431306, now seen corresponding path program 1 times [2023-11-29 00:33:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458811211] [2023-11-29 00:33:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:33:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:05,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:05,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458811211] [2023-11-29 00:33:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458811211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:33:05,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682411187] [2023-11-29 00:33:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:33:05,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:33:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:33:05,113 INFO L87 Difference]: Start difference. First operand has 565 states, 435 states have (on average 1.7126436781609196) internal successors, (745), 456 states have internal predecessors, (745), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:20,090 INFO L93 Difference]: Finished difference Result 2035 states and 3516 transitions. [2023-11-29 00:33:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:33:20,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2023-11-29 00:33:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:20,122 INFO L225 Difference]: With dead ends: 2035 [2023-11-29 00:33:20,122 INFO L226 Difference]: Without dead ends: 1476 [2023-11-29 00:33:20,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:33:20,139 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1801 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 6395 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 6880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 6395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:20,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 3032 Invalid, 6880 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [485 Valid, 6395 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-11-29 00:33:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-11-29 00:33:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1092. [2023-11-29 00:33:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 841 states have (on average 1.6956004756242569) internal successors, (1426), 873 states have internal predecessors, (1426), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:33:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1834 transitions. [2023-11-29 00:33:20,535 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1834 transitions. Word has length 91 [2023-11-29 00:33:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:20,536 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1834 transitions. [2023-11-29 00:33:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1834 transitions. [2023-11-29 00:33:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 00:33:20,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:20,544 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:20,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:33:20,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:20,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash 59601078, now seen corresponding path program 1 times [2023-11-29 00:33:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:20,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952104939] [2023-11-29 00:33:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 00:33:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 00:33:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:21,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952104939] [2023-11-29 00:33:21,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952104939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:21,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:21,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:33:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637842844] [2023-11-29 00:33:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:33:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:33:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:33:21,333 INFO L87 Difference]: Start difference. First operand 1092 states and 1834 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:28,053 INFO L93 Difference]: Finished difference Result 2530 states and 4309 transitions. [2023-11-29 00:33:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:33:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2023-11-29 00:33:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:28,066 INFO L225 Difference]: With dead ends: 2530 [2023-11-29 00:33:28,066 INFO L226 Difference]: Without dead ends: 1450 [2023-11-29 00:33:28,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:33:28,073 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 986 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 3090 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:28,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1705 Invalid, 3299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 3090 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 00:33:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-29 00:33:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1092. [2023-11-29 00:33:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 841 states have (on average 1.694411414982164) internal successors, (1425), 873 states have internal predecessors, (1425), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:33:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1833 transitions. [2023-11-29 00:33:28,411 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1833 transitions. Word has length 93 [2023-11-29 00:33:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:28,411 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1833 transitions. [2023-11-29 00:33:28,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1833 transitions. [2023-11-29 00:33:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 00:33:28,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:28,420 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:28,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:33:28,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:28,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash -84222829, now seen corresponding path program 1 times [2023-11-29 00:33:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661946789] [2023-11-29 00:33:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:28,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:33:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 00:33:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:29,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661946789] [2023-11-29 00:33:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661946789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:29,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:33:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157153785] [2023-11-29 00:33:29,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:29,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:33:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:33:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:33:29,147 INFO L87 Difference]: Start difference. First operand 1092 states and 1833 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:35,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:35,019 INFO L93 Difference]: Finished difference Result 2530 states and 4308 transitions. [2023-11-29 00:33:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:33:35,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2023-11-29 00:33:35,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:35,031 INFO L225 Difference]: With dead ends: 2530 [2023-11-29 00:33:35,031 INFO L226 Difference]: Without dead ends: 1450 [2023-11-29 00:33:35,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:33:35,037 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1903 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:35,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 1611 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 00:33:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-29 00:33:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1092. [2023-11-29 00:33:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 841 states have (on average 1.6932223543400713) internal successors, (1424), 873 states have internal predecessors, (1424), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:33:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1832 transitions. [2023-11-29 00:33:35,254 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1832 transitions. Word has length 94 [2023-11-29 00:33:35,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:35,255 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1832 transitions. [2023-11-29 00:33:35,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1832 transitions. [2023-11-29 00:33:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 00:33:35,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:35,259 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:35,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:33:35,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 130021074, now seen corresponding path program 1 times [2023-11-29 00:33:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971814794] [2023-11-29 00:33:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 00:33:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 00:33:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:35,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971814794] [2023-11-29 00:33:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971814794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:35,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:33:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241510273] [2023-11-29 00:33:35,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:35,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:33:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:33:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:33:35,989 INFO L87 Difference]: Start difference. First operand 1092 states and 1832 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:41,772 INFO L93 Difference]: Finished difference Result 2530 states and 4307 transitions. [2023-11-29 00:33:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:33:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2023-11-29 00:33:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:41,784 INFO L225 Difference]: With dead ends: 2530 [2023-11-29 00:33:41,784 INFO L226 Difference]: Without dead ends: 1450 [2023-11-29 00:33:41,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:33:41,791 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1446 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:41,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1646 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 00:33:41,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-29 00:33:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1092. [2023-11-29 00:33:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 841 states have (on average 1.6920332936979785) internal successors, (1423), 873 states have internal predecessors, (1423), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:33:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1831 transitions. [2023-11-29 00:33:42,067 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1831 transitions. Word has length 95 [2023-11-29 00:33:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:42,067 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1831 transitions. [2023-11-29 00:33:42,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1831 transitions. [2023-11-29 00:33:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 00:33:42,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:42,073 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:42,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:33:42,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:42,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:42,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1440534801, now seen corresponding path program 1 times [2023-11-29 00:33:42,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:42,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846462585] [2023-11-29 00:33:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:42,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 00:33:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:33:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:42,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:42,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846462585] [2023-11-29 00:33:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846462585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:42,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:42,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:33:42,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261341288] [2023-11-29 00:33:42,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:42,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:33:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:42,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:33:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:33:42,768 INFO L87 Difference]: Start difference. First operand 1092 states and 1831 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:49,060 INFO L93 Difference]: Finished difference Result 2530 states and 4306 transitions. [2023-11-29 00:33:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:33:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2023-11-29 00:33:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:49,071 INFO L225 Difference]: With dead ends: 2530 [2023-11-29 00:33:49,071 INFO L226 Difference]: Without dead ends: 1450 [2023-11-29 00:33:49,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:33:49,077 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 977 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 3094 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:49,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1722 Invalid, 3300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [206 Valid, 3094 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 00:33:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-29 00:33:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1092. [2023-11-29 00:33:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 841 states have (on average 1.690844233055886) internal successors, (1422), 873 states have internal predecessors, (1422), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:33:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1830 transitions. [2023-11-29 00:33:49,356 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1830 transitions. Word has length 96 [2023-11-29 00:33:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:49,357 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1830 transitions. [2023-11-29 00:33:49,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:33:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1830 transitions. [2023-11-29 00:33:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:33:49,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:49,360 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:49,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:33:49,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:49,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1789658350, now seen corresponding path program 1 times [2023-11-29 00:33:49,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:49,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044275098] [2023-11-29 00:33:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 00:33:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:50,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:50,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044275098] [2023-11-29 00:33:50,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044275098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:50,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:50,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:33:50,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481852533] [2023-11-29 00:33:50,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:33:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:33:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:33:50,362 INFO L87 Difference]: Start difference. First operand 1092 states and 1830 transitions. Second operand has 11 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:33:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:58,777 INFO L93 Difference]: Finished difference Result 2506 states and 4255 transitions. [2023-11-29 00:33:58,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:33:58,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 97 [2023-11-29 00:33:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:58,790 INFO L225 Difference]: With dead ends: 2506 [2023-11-29 00:33:58,791 INFO L226 Difference]: Without dead ends: 1474 [2023-11-29 00:33:58,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:33:58,798 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2027 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 6178 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 6714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 6178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:58,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 3343 Invalid, 6714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [536 Valid, 6178 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 00:33:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2023-11-29 00:33:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1104. [2023-11-29 00:33:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 850 states have (on average 1.6894117647058824) internal successors, (1436), 884 states have internal predecessors, (1436), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:33:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1848 transitions. [2023-11-29 00:33:59,203 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1848 transitions. Word has length 97 [2023-11-29 00:33:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:59,203 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1848 transitions. [2023-11-29 00:33:59,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:33:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1848 transitions. [2023-11-29 00:33:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:33:59,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:59,209 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:33:59,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:59,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1337112691, now seen corresponding path program 1 times [2023-11-29 00:33:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053253799] [2023-11-29 00:33:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:33:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 00:33:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:33:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:33:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:33:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:33:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:33:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:33:59,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:59,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053253799] [2023-11-29 00:33:59,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053253799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:59,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:33:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959323989] [2023-11-29 00:33:59,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:59,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:33:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:59,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:33:59,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:33:59,939 INFO L87 Difference]: Start difference. First operand 1104 states and 1848 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:05,372 INFO L93 Difference]: Finished difference Result 2518 states and 4276 transitions. [2023-11-29 00:34:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:34:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2023-11-29 00:34:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:05,380 INFO L225 Difference]: With dead ends: 2518 [2023-11-29 00:34:05,381 INFO L226 Difference]: Without dead ends: 1470 [2023-11-29 00:34:05,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:34:05,385 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1543 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:05,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 1657 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2820 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 00:34:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-29 00:34:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1104. [2023-11-29 00:34:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 850 states have (on average 1.683529411764706) internal successors, (1431), 884 states have internal predecessors, (1431), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1843 transitions. [2023-11-29 00:34:05,685 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1843 transitions. Word has length 97 [2023-11-29 00:34:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:05,685 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1843 transitions. [2023-11-29 00:34:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1843 transitions. [2023-11-29 00:34:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 00:34:05,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:05,690 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:34:05,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:05,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1946664432, now seen corresponding path program 1 times [2023-11-29 00:34:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:05,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012973367] [2023-11-29 00:34:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 00:34:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:06,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012973367] [2023-11-29 00:34:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012973367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:34:06,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64157727] [2023-11-29 00:34:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:06,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:34:06,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:34:06,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:34:06,354 INFO L87 Difference]: Start difference. First operand 1104 states and 1843 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:11,823 INFO L93 Difference]: Finished difference Result 2518 states and 4271 transitions. [2023-11-29 00:34:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:34:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2023-11-29 00:34:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:11,832 INFO L225 Difference]: With dead ends: 2518 [2023-11-29 00:34:11,832 INFO L226 Difference]: Without dead ends: 1470 [2023-11-29 00:34:11,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:34:11,837 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1978 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:11,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 1622 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 00:34:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-29 00:34:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1104. [2023-11-29 00:34:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 850 states have (on average 1.6776470588235295) internal successors, (1426), 884 states have internal predecessors, (1426), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1838 transitions. [2023-11-29 00:34:12,210 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1838 transitions. Word has length 98 [2023-11-29 00:34:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:12,210 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1838 transitions. [2023-11-29 00:34:12,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1838 transitions. [2023-11-29 00:34:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 00:34:12,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:12,216 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:12,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:34:12,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:12,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1232667442, now seen corresponding path program 1 times [2023-11-29 00:34:12,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:12,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141480779] [2023-11-29 00:34:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 00:34:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:12,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:12,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141480779] [2023-11-29 00:34:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141480779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:12,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:34:12,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975531638] [2023-11-29 00:34:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:12,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:34:12,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:12,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:34:12,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:34:12,884 INFO L87 Difference]: Start difference. First operand 1104 states and 1838 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:18,313 INFO L93 Difference]: Finished difference Result 2518 states and 4266 transitions. [2023-11-29 00:34:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:34:18,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-11-29 00:34:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:18,323 INFO L225 Difference]: With dead ends: 2518 [2023-11-29 00:34:18,323 INFO L226 Difference]: Without dead ends: 1470 [2023-11-29 00:34:18,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:34:18,327 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1534 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:18,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1668 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 00:34:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-29 00:34:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1104. [2023-11-29 00:34:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 850 states have (on average 1.671764705882353) internal successors, (1421), 884 states have internal predecessors, (1421), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1833 transitions. [2023-11-29 00:34:18,602 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1833 transitions. Word has length 99 [2023-11-29 00:34:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:18,602 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1833 transitions. [2023-11-29 00:34:18,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1833 transitions. [2023-11-29 00:34:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:34:18,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:18,607 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:18,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:34:18,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:18,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1218561355, now seen corresponding path program 1 times [2023-11-29 00:34:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523357416] [2023-11-29 00:34:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 00:34:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:19,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:19,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523357416] [2023-11-29 00:34:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523357416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:19,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:19,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:34:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784214251] [2023-11-29 00:34:19,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:19,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:34:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:19,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:34:19,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:34:19,373 INFO L87 Difference]: Start difference. First operand 1104 states and 1833 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:34:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:28,272 INFO L93 Difference]: Finished difference Result 2509 states and 4242 transitions. [2023-11-29 00:34:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:34:28,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 100 [2023-11-29 00:34:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:28,282 INFO L225 Difference]: With dead ends: 2509 [2023-11-29 00:34:28,282 INFO L226 Difference]: Without dead ends: 1475 [2023-11-29 00:34:28,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:34:28,287 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1973 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 5731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:28,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 2927 Invalid, 5731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [537 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 00:34:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2023-11-29 00:34:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1104. [2023-11-29 00:34:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 850 states have (on average 1.6705882352941177) internal successors, (1420), 884 states have internal predecessors, (1420), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1832 transitions. [2023-11-29 00:34:28,795 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1832 transitions. Word has length 100 [2023-11-29 00:34:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:28,795 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1832 transitions. [2023-11-29 00:34:28,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:34:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1832 transitions. [2023-11-29 00:34:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:34:28,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:28,799 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:28,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:34:28,799 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:28,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1608307093, now seen corresponding path program 1 times [2023-11-29 00:34:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:28,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14235379] [2023-11-29 00:34:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:28,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 00:34:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14235379] [2023-11-29 00:34:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14235379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:34:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041879941] [2023-11-29 00:34:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:34:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:34:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:34:29,454 INFO L87 Difference]: Start difference. First operand 1104 states and 1832 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:35,780 INFO L93 Difference]: Finished difference Result 2518 states and 4258 transitions. [2023-11-29 00:34:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:34:35,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2023-11-29 00:34:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:35,806 INFO L225 Difference]: With dead ends: 2518 [2023-11-29 00:34:35,807 INFO L226 Difference]: Without dead ends: 1470 [2023-11-29 00:34:35,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:34:35,811 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1982 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:35,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 1611 Invalid, 3234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [534 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 00:34:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-29 00:34:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1104. [2023-11-29 00:34:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 850 states have (on average 1.6647058823529413) internal successors, (1415), 884 states have internal predecessors, (1415), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1827 transitions. [2023-11-29 00:34:36,181 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1827 transitions. Word has length 100 [2023-11-29 00:34:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:36,181 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1827 transitions. [2023-11-29 00:34:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1827 transitions. [2023-11-29 00:34:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 00:34:36,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:36,187 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:36,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:34:36,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:36,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -193127883, now seen corresponding path program 1 times [2023-11-29 00:34:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:36,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794260280] [2023-11-29 00:34:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 00:34:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794260280] [2023-11-29 00:34:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794260280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:34:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821729345] [2023-11-29 00:34:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:37,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:34:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:34:37,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:34:37,134 INFO L87 Difference]: Start difference. First operand 1104 states and 1827 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:34:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:45,434 INFO L93 Difference]: Finished difference Result 2527 states and 4263 transitions. [2023-11-29 00:34:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:34:45,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 101 [2023-11-29 00:34:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:45,442 INFO L225 Difference]: With dead ends: 2527 [2023-11-29 00:34:45,442 INFO L226 Difference]: Without dead ends: 1491 [2023-11-29 00:34:45,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:34:45,446 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1049 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 5332 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 5332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:45,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 3011 Invalid, 5551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [219 Valid, 5332 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-29 00:34:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-11-29 00:34:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1107. [2023-11-29 00:34:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 853 states have (on average 1.6611957796014067) internal successors, (1417), 887 states have internal predecessors, (1417), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1829 transitions. [2023-11-29 00:34:45,755 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1829 transitions. Word has length 101 [2023-11-29 00:34:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:45,755 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1829 transitions. [2023-11-29 00:34:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:34:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1829 transitions. [2023-11-29 00:34:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 00:34:45,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:45,759 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:45,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:34:45,759 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:45,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 968833751, now seen corresponding path program 1 times [2023-11-29 00:34:45,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:45,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559888625] [2023-11-29 00:34:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:45,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 00:34:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559888625] [2023-11-29 00:34:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559888625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:46,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:34:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552386722] [2023-11-29 00:34:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:46,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:34:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:34:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:34:46,377 INFO L87 Difference]: Start difference. First operand 1107 states and 1829 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:51,696 INFO L93 Difference]: Finished difference Result 2527 states and 4259 transitions. [2023-11-29 00:34:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:34:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-11-29 00:34:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:51,705 INFO L225 Difference]: With dead ends: 2527 [2023-11-29 00:34:51,705 INFO L226 Difference]: Without dead ends: 1476 [2023-11-29 00:34:51,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:34:51,709 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1963 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:51,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 1622 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 00:34:51,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-11-29 00:34:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1107. [2023-11-29 00:34:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 853 states have (on average 1.6553341148886285) internal successors, (1412), 887 states have internal predecessors, (1412), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:34:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1824 transitions. [2023-11-29 00:34:51,984 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1824 transitions. Word has length 101 [2023-11-29 00:34:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:51,985 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1824 transitions. [2023-11-29 00:34:51,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:34:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1824 transitions. [2023-11-29 00:34:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 00:34:51,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:51,987 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:51,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:34:51,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:51,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1598202682, now seen corresponding path program 1 times [2023-11-29 00:34:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590865317] [2023-11-29 00:34:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:51,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:34:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 00:34:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:34:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:34:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:34:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:34:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:34:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:34:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590865317] [2023-11-29 00:34:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590865317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:34:52,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:34:52,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:34:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127748502] [2023-11-29 00:34:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:52,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:34:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:34:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:34:52,660 INFO L87 Difference]: Start difference. First operand 1107 states and 1824 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:35:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:01,800 INFO L93 Difference]: Finished difference Result 2533 states and 4260 transitions. [2023-11-29 00:35:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:35:01,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 102 [2023-11-29 00:35:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:01,810 INFO L225 Difference]: With dead ends: 2533 [2023-11-29 00:35:01,810 INFO L226 Difference]: Without dead ends: 1497 [2023-11-29 00:35:01,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:35:01,814 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1035 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:01,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 3044 Invalid, 5552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [213 Valid, 5339 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 00:35:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-11-29 00:35:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1111. [2023-11-29 00:35:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 857 states have (on average 1.6511085180863476) internal successors, (1415), 891 states have internal predecessors, (1415), 203 states have call successors, (203), 46 states have call predecessors, (203), 50 states have return successors, (209), 197 states have call predecessors, (209), 198 states have call successors, (209) [2023-11-29 00:35:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1827 transitions. [2023-11-29 00:35:02,114 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1827 transitions. Word has length 102 [2023-11-29 00:35:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:02,114 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1827 transitions. [2023-11-29 00:35:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:35:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1827 transitions. [2023-11-29 00:35:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 00:35:02,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:02,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:02,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:35:02,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:02,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:02,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1074371302, now seen corresponding path program 1 times [2023-11-29 00:35:02,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339532040] [2023-11-29 00:35:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 00:35:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:35:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:35:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:35:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:35:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339532040] [2023-11-29 00:35:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339532040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:02,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:35:02,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:35:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516560231] [2023-11-29 00:35:02,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:02,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:35:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:35:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:35:02,839 INFO L87 Difference]: Start difference. First operand 1111 states and 1827 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:35:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:10,359 INFO L93 Difference]: Finished difference Result 2575 states and 4304 transitions. [2023-11-29 00:35:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:35:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2023-11-29 00:35:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:10,369 INFO L225 Difference]: With dead ends: 2575 [2023-11-29 00:35:10,369 INFO L226 Difference]: Without dead ends: 1458 [2023-11-29 00:35:10,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:35:10,374 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 950 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:10,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1733 Invalid, 3150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [203 Valid, 2947 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 00:35:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2023-11-29 00:35:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1093. [2023-11-29 00:35:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 842 states have (on average 1.655581947743468) internal successors, (1394), 874 states have internal predecessors, (1394), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:35:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1802 transitions. [2023-11-29 00:35:10,722 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1802 transitions. Word has length 102 [2023-11-29 00:35:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:10,722 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1802 transitions. [2023-11-29 00:35:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:35:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1802 transitions. [2023-11-29 00:35:10,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 00:35:10,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:10,725 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:10,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:35:10,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:10,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:10,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1362539354, now seen corresponding path program 1 times [2023-11-29 00:35:10,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:10,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068529860] [2023-11-29 00:35:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:10,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 00:35:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:35:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:35:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:35:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:35:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068529860] [2023-11-29 00:35:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068529860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:35:11,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:35:11,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112224024] [2023-11-29 00:35:11,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:35:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:11,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:35:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:35:11,406 INFO L87 Difference]: Start difference. First operand 1093 states and 1802 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:35:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:20,219 INFO L93 Difference]: Finished difference Result 2509 states and 4218 transitions. [2023-11-29 00:35:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:35:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2023-11-29 00:35:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:20,228 INFO L225 Difference]: With dead ends: 2509 [2023-11-29 00:35:20,228 INFO L226 Difference]: Without dead ends: 1475 [2023-11-29 00:35:20,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:35:20,233 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1005 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 5209 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 5209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 3010 Invalid, 5425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [216 Valid, 5209 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 00:35:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2023-11-29 00:35:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1098. [2023-11-29 00:35:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 847 states have (on average 1.6517119244391971) internal successors, (1399), 879 states have internal predecessors, (1399), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:35:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1807 transitions. [2023-11-29 00:35:20,705 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1807 transitions. Word has length 103 [2023-11-29 00:35:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:20,705 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1807 transitions. [2023-11-29 00:35:20,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 00:35:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1807 transitions. [2023-11-29 00:35:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 00:35:20,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:20,709 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:20,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:35:20,710 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:20,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1440726643, now seen corresponding path program 1 times [2023-11-29 00:35:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950531525] [2023-11-29 00:35:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:20,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:35:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:35:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:35:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:35:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:35:21,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:21,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950531525] [2023-11-29 00:35:21,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950531525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:21,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:35:21,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:35:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143642771] [2023-11-29 00:35:21,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:21,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:35:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:21,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:35:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:35:21,414 INFO L87 Difference]: Start difference. First operand 1098 states and 1807 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:35:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:28,283 INFO L93 Difference]: Finished difference Result 2510 states and 4216 transitions. [2023-11-29 00:35:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:35:28,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-11-29 00:35:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:28,295 INFO L225 Difference]: With dead ends: 2510 [2023-11-29 00:35:28,295 INFO L226 Difference]: Without dead ends: 1456 [2023-11-29 00:35:28,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:35:28,300 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1890 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:28,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1622 Invalid, 3176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [525 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 00:35:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-11-29 00:35:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1098. [2023-11-29 00:35:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 847 states have (on average 1.6469893742621016) internal successors, (1395), 879 states have internal predecessors, (1395), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2023-11-29 00:35:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1803 transitions. [2023-11-29 00:35:28,701 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1803 transitions. Word has length 104 [2023-11-29 00:35:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:28,701 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1803 transitions. [2023-11-29 00:35:28,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:35:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1803 transitions. [2023-11-29 00:35:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 00:35:28,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:28,704 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:28,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:35:28,704 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:28,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash -298224177, now seen corresponding path program 1 times [2023-11-29 00:35:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341725925] [2023-11-29 00:35:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:35:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:35:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 00:35:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:35:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:35:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341725925] [2023-11-29 00:35:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341725925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:35:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837234456] [2023-11-29 00:35:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:29,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:35:29,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:35:29,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:35:29,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:35:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:29,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:35:29,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:35:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:35:29,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:35:29,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837234456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:29,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:35:29,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-11-29 00:35:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245360731] [2023-11-29 00:35:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:35:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:35:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:35:29,947 INFO L87 Difference]: Start difference. First operand 1098 states and 1803 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 00:35:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:30,955 INFO L93 Difference]: Finished difference Result 2141 states and 3599 transitions. [2023-11-29 00:35:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:35:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2023-11-29 00:35:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:30,964 INFO L225 Difference]: With dead ends: 2141 [2023-11-29 00:35:30,964 INFO L226 Difference]: Without dead ends: 1114 [2023-11-29 00:35:30,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:35:30,970 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 847 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:30,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2180 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:35:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2023-11-29 00:35:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2023-11-29 00:35:31,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 861 states have (on average 1.6480836236933798) internal successors, (1419), 893 states have internal predecessors, (1419), 202 states have call successors, (202), 48 states have call predecessors, (202), 50 states have return successors, (208), 196 states have call predecessors, (208), 197 states have call successors, (208) [2023-11-29 00:35:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1829 transitions. [2023-11-29 00:35:31,275 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1829 transitions. Word has length 104 [2023-11-29 00:35:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:31,275 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1829 transitions. [2023-11-29 00:35:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 00:35:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1829 transitions. [2023-11-29 00:35:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 00:35:31,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:31,279 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:31,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:35:31,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:35:31,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:31,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1554868991, now seen corresponding path program 1 times [2023-11-29 00:35:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:31,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143336003] [2023-11-29 00:35:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:31,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:35:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:35:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 00:35:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:35:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 00:35:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 00:35:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:35:32,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:32,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143336003] [2023-11-29 00:35:32,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143336003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:32,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:35:32,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:35:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913402417] [2023-11-29 00:35:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:32,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:35:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:35:32,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:35:32,326 INFO L87 Difference]: Start difference. First operand 1114 states and 1829 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:35:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:40,068 INFO L93 Difference]: Finished difference Result 2529 states and 4337 transitions. [2023-11-29 00:35:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:35:40,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 106 [2023-11-29 00:35:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:40,077 INFO L225 Difference]: With dead ends: 2529 [2023-11-29 00:35:40,077 INFO L226 Difference]: Without dead ends: 1482 [2023-11-29 00:35:40,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:35:40,082 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2218 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:40,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2228 Valid, 1917 Invalid, 4417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [760 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 00:35:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-29 00:35:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1124. [2023-11-29 00:35:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 869 states have (on average 1.6398158803222094) internal successors, (1425), 901 states have internal predecessors, (1425), 202 states have call successors, (202), 50 states have call predecessors, (202), 52 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2023-11-29 00:35:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1837 transitions. [2023-11-29 00:35:40,422 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1837 transitions. Word has length 106 [2023-11-29 00:35:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:40,422 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1837 transitions. [2023-11-29 00:35:40,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:35:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1837 transitions. [2023-11-29 00:35:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 00:35:40,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:40,424 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:35:40,425 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:40,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -591869297, now seen corresponding path program 1 times [2023-11-29 00:35:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:40,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131633923] [2023-11-29 00:35:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:35:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 00:35:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 00:35:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 00:35:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 00:35:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 00:35:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:35:41,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:41,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131633923] [2023-11-29 00:35:41,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131633923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:41,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:35:41,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:35:41,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166361677] [2023-11-29 00:35:41,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:41,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:35:41,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:35:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:35:41,223 INFO L87 Difference]: Start difference. First operand 1124 states and 1837 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:35:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:48,682 INFO L93 Difference]: Finished difference Result 2551 states and 4347 transitions. [2023-11-29 00:35:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:35:48,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 108 [2023-11-29 00:35:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:48,690 INFO L225 Difference]: With dead ends: 2551 [2023-11-29 00:35:48,690 INFO L226 Difference]: Without dead ends: 1494 [2023-11-29 00:35:48,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:35:48,693 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2213 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 4414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:48,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 1938 Invalid, 4414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [744 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 00:35:48,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-11-29 00:35:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1136. [2023-11-29 00:35:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 879 states have (on average 1.6302616609783844) internal successors, (1433), 911 states have internal predecessors, (1433), 202 states have call successors, (202), 52 states have call predecessors, (202), 54 states have return successors, (212), 196 states have call predecessors, (212), 197 states have call successors, (212) [2023-11-29 00:35:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1847 transitions. [2023-11-29 00:35:49,011 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1847 transitions. Word has length 108 [2023-11-29 00:35:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:49,012 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1847 transitions. [2023-11-29 00:35:49,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:35:49,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1847 transitions. [2023-11-29 00:35:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 00:35:49,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:49,014 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:35:49,014 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1903418183, now seen corresponding path program 1 times [2023-11-29 00:35:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290635662] [2023-11-29 00:35:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:35:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 00:35:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 00:35:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 00:35:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:35:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 00:35:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:35:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290635662] [2023-11-29 00:35:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290635662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:49,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:35:49,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:35:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593617371] [2023-11-29 00:35:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:35:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:35:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:35:49,697 INFO L87 Difference]: Start difference. First operand 1136 states and 1847 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:35:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:57,581 INFO L93 Difference]: Finished difference Result 2577 states and 4361 transitions. [2023-11-29 00:35:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:35:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2023-11-29 00:35:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:57,591 INFO L225 Difference]: With dead ends: 2577 [2023-11-29 00:35:57,591 INFO L226 Difference]: Without dead ends: 1508 [2023-11-29 00:35:57,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:35:57,595 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1765 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 3833 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 4409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 3833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:57,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 2004 Invalid, 4409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [576 Valid, 3833 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-29 00:35:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2023-11-29 00:35:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1150. [2023-11-29 00:35:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 891 states have (on average 1.6195286195286196) internal successors, (1443), 923 states have internal predecessors, (1443), 202 states have call successors, (202), 54 states have call predecessors, (202), 56 states have return successors, (214), 196 states have call predecessors, (214), 197 states have call successors, (214) [2023-11-29 00:35:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1859 transitions. [2023-11-29 00:35:58,025 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1859 transitions. Word has length 110 [2023-11-29 00:35:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:58,026 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1859 transitions. [2023-11-29 00:35:58,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:35:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1859 transitions. [2023-11-29 00:35:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 00:35:58,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:58,028 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:35:58,028 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:58,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1208197455, now seen corresponding path program 1 times [2023-11-29 00:35:58,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:58,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600405499] [2023-11-29 00:35:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:58,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:35:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:35:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:35:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:35:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:35:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:35:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:35:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:35:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 00:35:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:35:59,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600405499] [2023-11-29 00:35:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600405499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:35:59,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819957039] [2023-11-29 00:35:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:59,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:35:59,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:35:59,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:35:59,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:35:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:59,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:35:59,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:35:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:35:59,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:35:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819957039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:35:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:35:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2023-11-29 00:35:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730404595] [2023-11-29 00:35:59,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:35:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:35:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:35:59,548 INFO L87 Difference]: Start difference. First operand 1150 states and 1859 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 00:36:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:00,353 INFO L93 Difference]: Finished difference Result 1225 states and 1981 transitions. [2023-11-29 00:36:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:36:00,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2023-11-29 00:36:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:00,362 INFO L225 Difference]: With dead ends: 1225 [2023-11-29 00:36:00,363 INFO L226 Difference]: Without dead ends: 1210 [2023-11-29 00:36:00,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:36:00,364 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 876 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:00,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2220 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:36:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-11-29 00:36:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1154. [2023-11-29 00:36:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 895 states have (on average 1.6167597765363129) internal successors, (1447), 927 states have internal predecessors, (1447), 202 states have call successors, (202), 54 states have call predecessors, (202), 56 states have return successors, (214), 196 states have call predecessors, (214), 197 states have call successors, (214) [2023-11-29 00:36:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1863 transitions. [2023-11-29 00:36:00,695 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1863 transitions. Word has length 112 [2023-11-29 00:36:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:00,696 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1863 transitions. [2023-11-29 00:36:00,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 00:36:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1863 transitions. [2023-11-29 00:36:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 00:36:00,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:00,698 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:00,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:36:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:36:00,899 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1905386417, now seen corresponding path program 1 times [2023-11-29 00:36:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381942981] [2023-11-29 00:36:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:36:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:36:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:36:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:36:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 00:36:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 00:36:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:36:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381942981] [2023-11-29 00:36:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381942981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:36:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047743361] [2023-11-29 00:36:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:36:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:36:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:36:01,641 INFO L87 Difference]: Start difference. First operand 1154 states and 1863 transitions. Second operand has 11 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:36:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:17,455 INFO L93 Difference]: Finished difference Result 3257 states and 5515 transitions. [2023-11-29 00:36:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 00:36:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2023-11-29 00:36:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:17,473 INFO L225 Difference]: With dead ends: 3257 [2023-11-29 00:36:17,473 INFO L226 Difference]: Without dead ends: 3242 [2023-11-29 00:36:17,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 00:36:17,477 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 6818 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 4490 mSolverCounterSat, 2547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6857 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 7037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2547 IncrementalHoareTripleChecker+Valid, 4490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:17,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6857 Valid, 2418 Invalid, 7037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2547 Valid, 4490 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-11-29 00:36:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2023-11-29 00:36:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 1154. [2023-11-29 00:36:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 895 states have (on average 1.6145251396648044) internal successors, (1445), 927 states have internal predecessors, (1445), 202 states have call successors, (202), 54 states have call predecessors, (202), 56 states have return successors, (214), 196 states have call predecessors, (214), 197 states have call successors, (214) [2023-11-29 00:36:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1861 transitions. [2023-11-29 00:36:18,051 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1861 transitions. Word has length 117 [2023-11-29 00:36:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:18,052 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1861 transitions. [2023-11-29 00:36:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 00:36:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1861 transitions. [2023-11-29 00:36:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 00:36:18,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:18,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:18,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:36:18,055 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:18,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1321872644, now seen corresponding path program 1 times [2023-11-29 00:36:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:18,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898239119] [2023-11-29 00:36:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:18,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:36:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:36:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:36:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:36:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 00:36:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 00:36:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 00:36:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 00:36:19,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:19,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898239119] [2023-11-29 00:36:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898239119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:36:19,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001091410] [2023-11-29 00:36:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:19,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:19,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:19,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:36:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:19,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:36:19,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:36:19,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:36:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001091410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:19,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:36:19,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2023-11-29 00:36:19,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105377355] [2023-11-29 00:36:19,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:19,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:36:19,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:36:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:36:19,713 INFO L87 Difference]: Start difference. First operand 1154 states and 1861 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 00:36:23,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:23,478 INFO L93 Difference]: Finished difference Result 2368 states and 3867 transitions. [2023-11-29 00:36:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:36:23,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 126 [2023-11-29 00:36:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:23,483 INFO L225 Difference]: With dead ends: 2368 [2023-11-29 00:36:23,483 INFO L226 Difference]: Without dead ends: 1285 [2023-11-29 00:36:23,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:36:23,486 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 3242 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 4707 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 4707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 1682 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 4707 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 00:36:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-11-29 00:36:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1178. [2023-11-29 00:36:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 911 states have (on average 1.6048298572996706) internal successors, (1462), 947 states have internal predecessors, (1462), 206 states have call successors, (206), 56 states have call predecessors, (206), 60 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2023-11-29 00:36:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1891 transitions. [2023-11-29 00:36:23,896 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1891 transitions. Word has length 126 [2023-11-29 00:36:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:23,896 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1891 transitions. [2023-11-29 00:36:23,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 00:36:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1891 transitions. [2023-11-29 00:36:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:36:23,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:23,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:23,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:36:24,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:36:24,099 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:24,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1954317818, now seen corresponding path program 1 times [2023-11-29 00:36:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:24,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237698691] [2023-11-29 00:36:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:24,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:36:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:36:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:36:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:36:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 00:36:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 00:36:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 00:36:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:36:25,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:25,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237698691] [2023-11-29 00:36:25,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237698691] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:36:25,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210956056] [2023-11-29 00:36:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:25,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:25,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:25,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:36:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:25,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:36:25,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 00:36:25,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:36:25,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210956056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:25,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:36:25,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [21] total 23 [2023-11-29 00:36:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690665116] [2023-11-29 00:36:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:25,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:36:25,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:36:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:36:25,675 INFO L87 Difference]: Start difference. First operand 1178 states and 1891 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-29 00:36:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:26,158 INFO L93 Difference]: Finished difference Result 1265 states and 2024 transitions. [2023-11-29 00:36:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:36:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 130 [2023-11-29 00:36:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:26,164 INFO L225 Difference]: With dead ends: 1265 [2023-11-29 00:36:26,165 INFO L226 Difference]: Without dead ends: 1250 [2023-11-29 00:36:26,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:36:26,166 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 48 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:26,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2690 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:36:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-11-29 00:36:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1182. [2023-11-29 00:36:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 915 states have (on average 1.6021857923497267) internal successors, (1466), 951 states have internal predecessors, (1466), 206 states have call successors, (206), 56 states have call predecessors, (206), 60 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2023-11-29 00:36:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1895 transitions. [2023-11-29 00:36:26,795 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1895 transitions. Word has length 130 [2023-11-29 00:36:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:26,796 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 1895 transitions. [2023-11-29 00:36:26,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-29 00:36:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1895 transitions. [2023-11-29 00:36:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-29 00:36:26,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:26,801 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 00:36:26,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:36:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:36:27,002 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:27,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1170512401, now seen corresponding path program 1 times [2023-11-29 00:36:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297455577] [2023-11-29 00:36:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:36:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:36:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:36:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:36:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 00:36:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 00:36:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 00:36:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 00:36:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 00:36:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 00:36:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 00:36:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 00:36:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 00:36:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297455577] [2023-11-29 00:36:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297455577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:36:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857324127] [2023-11-29 00:36:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:28,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:28,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:28,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:36:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:29,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:36:29,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-29 00:36:29,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:36:29,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857324127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:29,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:36:29,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 20 [2023-11-29 00:36:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992205982] [2023-11-29 00:36:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:29,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:36:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:36:29,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:36:29,128 INFO L87 Difference]: Start difference. First operand 1182 states and 1895 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-29 00:36:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:30,024 INFO L93 Difference]: Finished difference Result 3380 states and 5515 transitions. [2023-11-29 00:36:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:36:30,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 217 [2023-11-29 00:36:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:30,039 INFO L225 Difference]: With dead ends: 3380 [2023-11-29 00:36:30,040 INFO L226 Difference]: Without dead ends: 2269 [2023-11-29 00:36:30,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:36:30,045 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 873 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:30,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1798 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:36:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2023-11-29 00:36:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2267. [2023-11-29 00:36:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 1751 states have (on average 1.6179326099371787) internal successors, (2833), 1819 states have internal predecessors, (2833), 398 states have call successors, (398), 107 states have call predecessors, (398), 117 states have return successors, (457), 392 states have call predecessors, (457), 393 states have call successors, (457) [2023-11-29 00:36:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3688 transitions. [2023-11-29 00:36:31,064 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3688 transitions. Word has length 217 [2023-11-29 00:36:31,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:31,065 INFO L495 AbstractCegarLoop]: Abstraction has 2267 states and 3688 transitions. [2023-11-29 00:36:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-29 00:36:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3688 transitions. [2023-11-29 00:36:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-29 00:36:31,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:31,070 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 00:36:31,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:36:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:36:31,271 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:31,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1196514508, now seen corresponding path program 1 times [2023-11-29 00:36:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276973048] [2023-11-29 00:36:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:36:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:36:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:36:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:36:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 00:36:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 00:36:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 00:36:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 00:36:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 00:36:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:36:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:36:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 00:36:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:36:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 00:36:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 00:36:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276973048] [2023-11-29 00:36:32,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276973048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:36:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861449417] [2023-11-29 00:36:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:32,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:32,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:32,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:36:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:33,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:36:33,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 29 proven. 80 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-29 00:36:33,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:36:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 00:36:33,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861449417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:36:33,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:36:33,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5] total 23 [2023-11-29 00:36:33,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400771972] [2023-11-29 00:36:33,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:36:33,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:36:33,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:36:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:36:33,800 INFO L87 Difference]: Start difference. First operand 2267 states and 3688 transitions. Second operand has 23 states, 22 states have (on average 9.454545454545455) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) [2023-11-29 00:37:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:37:28,917 INFO L93 Difference]: Finished difference Result 15772 states and 28226 transitions. [2023-11-29 00:37:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 00:37:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 9.454545454545455) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) Word has length 216 [2023-11-29 00:37:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:37:29,000 INFO L225 Difference]: With dead ends: 15772 [2023-11-29 00:37:29,001 INFO L226 Difference]: Without dead ends: 13576 [2023-11-29 00:37:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4381 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=1694, Invalid=11188, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 00:37:29,030 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 8882 mSDsluCounter, 18829 mSDsCounter, 0 mSdLazyCounter, 33385 mSolverCounterSat, 2973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8888 SdHoareTripleChecker+Valid, 20393 SdHoareTripleChecker+Invalid, 36358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2973 IncrementalHoareTripleChecker+Valid, 33385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:37:29,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8888 Valid, 20393 Invalid, 36358 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2973 Valid, 33385 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time] [2023-11-29 00:37:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13576 states. [2023-11-29 00:37:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13576 to 8511. [2023-11-29 00:37:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 6467 states have (on average 1.583887428483068) internal successors, (10243), 6699 states have internal predecessors, (10243), 1562 states have call successors, (1562), 350 states have call predecessors, (1562), 481 states have return successors, (2172), 1577 states have call predecessors, (2172), 1557 states have call successors, (2172) [2023-11-29 00:37:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 13977 transitions. [2023-11-29 00:37:32,869 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 13977 transitions. Word has length 216 [2023-11-29 00:37:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:37:32,870 INFO L495 AbstractCegarLoop]: Abstraction has 8511 states and 13977 transitions. [2023-11-29 00:37:32,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 9.454545454545455) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) [2023-11-29 00:37:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 13977 transitions. [2023-11-29 00:37:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-29 00:37:32,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:37:32,883 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 00:37:32,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:37:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:37:33,084 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:37:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:37:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -853818358, now seen corresponding path program 1 times [2023-11-29 00:37:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:37:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065960305] [2023-11-29 00:37:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:37:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:37:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:37:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 00:37:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:37:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 00:37:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 00:37:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 00:37:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 00:37:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:37:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:37:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 00:37:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 00:37:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 54 proven. 11 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 00:37:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:37:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065960305] [2023-11-29 00:37:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065960305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:37:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121863706] [2023-11-29 00:37:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:37:34,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:37:34,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:37:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:34,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:37:34,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:37:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-29 00:37:34,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:37:34,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121863706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:37:34,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:37:34,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2023-11-29 00:37:34,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056962668] [2023-11-29 00:37:34,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:37:34,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:37:34,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:37:34,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:37:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:37:34,567 INFO L87 Difference]: Start difference. First operand 8511 states and 13977 transitions. Second operand has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-29 00:37:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:37:36,522 INFO L93 Difference]: Finished difference Result 12408 states and 20311 transitions. [2023-11-29 00:37:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:37:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 218 [2023-11-29 00:37:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:37:36,537 INFO L225 Difference]: With dead ends: 12408 [2023-11-29 00:37:36,537 INFO L226 Difference]: Without dead ends: 3949 [2023-11-29 00:37:36,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:37:36,556 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 57 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 5895 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:37:36,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 5895 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:37:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2023-11-29 00:37:38,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 3949. [2023-11-29 00:37:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3041 states have (on average 1.5879644853666557) internal successors, (4829), 3147 states have internal predecessors, (4829), 680 states have call successors, (680), 177 states have call predecessors, (680), 227 states have return successors, (882), 672 states have call predecessors, (882), 675 states have call successors, (882) [2023-11-29 00:37:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6391 transitions. [2023-11-29 00:37:38,184 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6391 transitions. Word has length 218 [2023-11-29 00:37:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:37:38,184 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6391 transitions. [2023-11-29 00:37:38,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-29 00:37:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6391 transitions. [2023-11-29 00:37:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-29 00:37:38,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:37:38,190 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 00:37:38,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:37:38,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:37:38,391 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:37:38,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:37:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -428180585, now seen corresponding path program 1 times [2023-11-29 00:37:38,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:37:38,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688970642] [2023-11-29 00:37:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:38,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:37:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:37:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:37:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:37:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:37:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 00:37:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 00:37:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 00:37:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 00:37:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 00:37:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:37:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:37:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:37:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:37:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 00:37:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:37:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 00:37:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 00:37:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:37:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688970642] [2023-11-29 00:37:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688970642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:37:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122040042] [2023-11-29 00:37:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:39,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:39,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:37:39,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:37:39,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:37:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:39,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:37:39,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:37:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 00:37:40,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:37:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 00:37:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122040042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:37:41,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:37:41,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 34 [2023-11-29 00:37:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474986437] [2023-11-29 00:37:41,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:37:41,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:37:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:37:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:37:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:37:41,611 INFO L87 Difference]: Start difference. First operand 3949 states and 6391 transitions. Second operand has 34 states, 29 states have (on average 8.379310344827585) internal successors, (243), 26 states have internal predecessors, (243), 14 states have call successors, (59), 9 states have call predecessors, (59), 15 states have return successors, (62), 19 states have call predecessors, (62), 14 states have call successors, (62) [2023-11-29 00:39:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:39:28,769 INFO L93 Difference]: Finished difference Result 23002 states and 40632 transitions. [2023-11-29 00:39:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-11-29 00:39:28,770 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 8.379310344827585) internal successors, (243), 26 states have internal predecessors, (243), 14 states have call successors, (59), 9 states have call predecessors, (59), 15 states have return successors, (62), 19 states have call predecessors, (62), 14 states have call successors, (62) Word has length 229 [2023-11-29 00:39:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:39:28,914 INFO L225 Difference]: With dead ends: 23002 [2023-11-29 00:39:28,915 INFO L226 Difference]: Without dead ends: 17429 [2023-11-29 00:39:28,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16608 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=5279, Invalid=38611, Unknown=0, NotChecked=0, Total=43890 [2023-11-29 00:39:28,993 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 22982 mSDsluCounter, 16289 mSDsCounter, 0 mSdLazyCounter, 34114 mSolverCounterSat, 8813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22982 SdHoareTripleChecker+Valid, 17310 SdHoareTripleChecker+Invalid, 42927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 8813 IncrementalHoareTripleChecker+Valid, 34114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:39:28,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22982 Valid, 17310 Invalid, 42927 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [8813 Valid, 34114 Invalid, 0 Unknown, 0 Unchecked, 36.1s Time] [2023-11-29 00:39:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2023-11-29 00:39:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 13675. [2023-11-29 00:39:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13675 states, 10378 states have (on average 1.540952013875506) internal successors, (15992), 10765 states have internal predecessors, (15992), 2453 states have call successors, (2453), 657 states have call predecessors, (2453), 843 states have return successors, (3618), 2444 states have call predecessors, (3618), 2448 states have call successors, (3618) [2023-11-29 00:39:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13675 states to 13675 states and 22063 transitions. [2023-11-29 00:39:37,018 INFO L78 Accepts]: Start accepts. Automaton has 13675 states and 22063 transitions. Word has length 229 [2023-11-29 00:39:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:39:37,018 INFO L495 AbstractCegarLoop]: Abstraction has 13675 states and 22063 transitions. [2023-11-29 00:39:37,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 8.379310344827585) internal successors, (243), 26 states have internal predecessors, (243), 14 states have call successors, (59), 9 states have call predecessors, (59), 15 states have return successors, (62), 19 states have call predecessors, (62), 14 states have call successors, (62) [2023-11-29 00:39:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13675 states and 22063 transitions. [2023-11-29 00:39:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 00:39:37,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:39:37,027 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:37,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:39:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 00:39:37,228 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:39:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 154447683, now seen corresponding path program 1 times [2023-11-29 00:39:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488887142] [2023-11-29 00:39:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:39:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:39:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:39:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:39:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:39:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:39:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:39:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:39:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:39:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:39:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:39:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:39:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:39:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 00:39:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 00:39:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:39:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 00:39:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 00:39:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 00:39:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 00:39:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 00:39:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 00:39:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 00:39:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 00:39:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488887142] [2023-11-29 00:39:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488887142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:39:38,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:39:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 00:39:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868557292] [2023-11-29 00:39:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:39:38,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:39:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:39:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:39:38,317 INFO L87 Difference]: Start difference. First operand 13675 states and 22063 transitions. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 11 states have internal predecessors, (114), 7 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-29 00:40:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:40:27,697 INFO L93 Difference]: Finished difference Result 46824 states and 81239 transitions. [2023-11-29 00:40:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-29 00:40:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 11 states have internal predecessors, (114), 7 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 192 [2023-11-29 00:40:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:40:27,885 INFO L225 Difference]: With dead ends: 46824 [2023-11-29 00:40:27,885 INFO L226 Difference]: Without dead ends: 33148 [2023-11-29 00:40:27,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=803, Invalid=4027, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 00:40:27,956 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 6467 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 15576 mSolverCounterSat, 1922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6536 SdHoareTripleChecker+Valid, 7864 SdHoareTripleChecker+Invalid, 17498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1922 IncrementalHoareTripleChecker+Valid, 15576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:40:27,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6536 Valid, 7864 Invalid, 17498 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1922 Valid, 15576 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-11-29 00:40:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33148 states. [2023-11-29 00:40:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33148 to 27160. [2023-11-29 00:40:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27160 states, 20658 states have (on average 1.532771807532191) internal successors, (31664), 21419 states have internal predecessors, (31664), 4760 states have call successors, (4760), 1323 states have call predecessors, (4760), 1741 states have return successors, (8016), 4801 states have call predecessors, (8016), 4755 states have call successors, (8016) [2023-11-29 00:40:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27160 states to 27160 states and 44440 transitions. [2023-11-29 00:40:39,481 INFO L78 Accepts]: Start accepts. Automaton has 27160 states and 44440 transitions. Word has length 192 [2023-11-29 00:40:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:40:39,481 INFO L495 AbstractCegarLoop]: Abstraction has 27160 states and 44440 transitions. [2023-11-29 00:40:39,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 11 states have internal predecessors, (114), 7 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-29 00:40:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 27160 states and 44440 transitions. [2023-11-29 00:40:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-29 00:40:39,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:40:39,489 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:40:39,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 00:40:39,490 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:40:39,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:40:39,490 INFO L85 PathProgramCache]: Analyzing trace with hash -731346291, now seen corresponding path program 1 times [2023-11-29 00:40:39,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:40:39,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410043625] [2023-11-29 00:40:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:40:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:40:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:40:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:40:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:40:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:40:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:40:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:40:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:40:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:40:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:40:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:40:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:40:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:40:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:40:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 00:40:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:40:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 00:40:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:40:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 00:40:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 00:40:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 00:40:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 00:40:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 00:40:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 00:40:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 00:40:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 00:40:40,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:40:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410043625] [2023-11-29 00:40:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410043625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:40:40,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:40:40,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:40:40,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033165729] [2023-11-29 00:40:40,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:40:40,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:40:40,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:40:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:40:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:40:40,243 INFO L87 Difference]: Start difference. First operand 27160 states and 44440 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 00:41:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:22,537 INFO L93 Difference]: Finished difference Result 91409 states and 163974 transitions. [2023-11-29 00:41:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:41:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 197 [2023-11-29 00:41:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:22,995 INFO L225 Difference]: With dead ends: 91409 [2023-11-29 00:41:22,995 INFO L226 Difference]: Without dead ends: 64326 [2023-11-29 00:41:23,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:41:23,162 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 3874 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3880 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 5479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:23,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3880 Valid, 2112 Invalid, 5479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1255 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-29 00:41:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64326 states. [2023-11-29 00:41:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64326 to 53492. [2023-11-29 00:41:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53492 states, 40612 states have (on average 1.5303851078498967) internal successors, (62152), 42165 states have internal predecessors, (62152), 9420 states have call successors, (9420), 2589 states have call predecessors, (9420), 3459 states have return successors, (16888), 9505 states have call predecessors, (16888), 9415 states have call successors, (16888) [2023-11-29 00:41:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53492 states to 53492 states and 88460 transitions. [2023-11-29 00:41:45,956 INFO L78 Accepts]: Start accepts. Automaton has 53492 states and 88460 transitions. Word has length 197 [2023-11-29 00:41:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:45,956 INFO L495 AbstractCegarLoop]: Abstraction has 53492 states and 88460 transitions. [2023-11-29 00:41:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 00:41:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 53492 states and 88460 transitions. [2023-11-29 00:41:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-29 00:41:46,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:46,094 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:41:46,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 00:41:46,095 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:46,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1464502335, now seen corresponding path program 1 times [2023-11-29 00:41:46,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:46,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281820833] [2023-11-29 00:41:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:46,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:41:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:41:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:41:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:41:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:41:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 00:41:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:41:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 00:41:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 00:41:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 00:41:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 00:41:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 00:41:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 00:41:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 00:41:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 00:41:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 00:41:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:41:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:41:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:41:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:41:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:41:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 00:41:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:41:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 00:41:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:41:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 00:41:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 00:41:47,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:47,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281820833] [2023-11-29 00:41:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281820833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:47,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117511312] [2023-11-29 00:41:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:47,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:47,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:47,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:41:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:41:47,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-29 00:41:47,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117511312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:47,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:41:47,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-11-29 00:41:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887279450] [2023-11-29 00:41:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:47,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:41:47,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:41:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:41:47,485 INFO L87 Difference]: Start difference. First operand 53492 states and 88460 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-29 00:42:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:10,764 INFO L93 Difference]: Finished difference Result 109409 states and 183689 transitions. [2023-11-29 00:42:10,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:42:10,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 267 [2023-11-29 00:42:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:11,058 INFO L225 Difference]: With dead ends: 109409 [2023-11-29 00:42:11,058 INFO L226 Difference]: Without dead ends: 55988 [2023-11-29 00:42:11,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:42:11,251 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 213 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:11,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2346 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:42:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55988 states. [2023-11-29 00:42:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55988 to 55988. [2023-11-29 00:42:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55988 states, 43044 states have (on average 1.5524579500046465) internal successors, (66824), 44597 states have internal predecessors, (66824), 9420 states have call successors, (9420), 2653 states have call predecessors, (9420), 3523 states have return successors, (16888), 9505 states have call predecessors, (16888), 9415 states have call successors, (16888) [2023-11-29 00:42:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55988 states to 55988 states and 93132 transitions. [2023-11-29 00:42:34,219 INFO L78 Accepts]: Start accepts. Automaton has 55988 states and 93132 transitions. Word has length 267 [2023-11-29 00:42:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:34,220 INFO L495 AbstractCegarLoop]: Abstraction has 55988 states and 93132 transitions. [2023-11-29 00:42:34,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-29 00:42:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 55988 states and 93132 transitions. [2023-11-29 00:42:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-29 00:42:34,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:34,231 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:34,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:42:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af3e5fe-c3aa-4e49-b553-f4052bd2078c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:34,432 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:34,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1623299430, now seen corresponding path program 1 times [2023-11-29 00:42:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:34,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974669651] [2023-11-29 00:42:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:34,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:42:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:42:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:42:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:42:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:42:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:42:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:42:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:42:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:42:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:42:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:42:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:42:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:42:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 00:42:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:42:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 00:42:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:42:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 00:42:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 00:42:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 00:42:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 00:42:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 00:42:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 00:42:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 00:42:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 00:42:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:35,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974669651] [2023-11-29 00:42:35,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974669651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:35,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:42:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106092923] [2023-11-29 00:42:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:42:35,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:42:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:42:35,085 INFO L87 Difference]: Start difference. First operand 55988 states and 93132 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 00:43:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:43:51,476 INFO L93 Difference]: Finished difference Result 188465 states and 349514 transitions. [2023-11-29 00:43:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:43:51,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 199 [2023-11-29 00:43:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:43:52,932 INFO L225 Difference]: With dead ends: 188465 [2023-11-29 00:43:52,932 INFO L226 Difference]: Without dead ends: 132566 [2023-11-29 00:43:53,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:43:53,261 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 3910 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:43:53,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3916 Valid, 2095 Invalid, 5341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1272 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-29 00:43:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132566 states. [2023-11-29 00:44:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132566 to 111456. [2023-11-29 00:44:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111456 states, 85636 states have (on average 1.549535242187865) internal successors, (132696), 88773 states have internal predecessors, (132696), 18770 states have call successors, (18770), 5275 states have call predecessors, (18770), 7049 states have return successors, (36540), 18943 states have call predecessors, (36540), 18765 states have call successors, (36540) [2023-11-29 00:44:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111456 states to 111456 states and 188006 transitions. [2023-11-29 00:44:42,258 INFO L78 Accepts]: Start accepts. Automaton has 111456 states and 188006 transitions. Word has length 199 [2023-11-29 00:44:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:42,259 INFO L495 AbstractCegarLoop]: Abstraction has 111456 states and 188006 transitions. [2023-11-29 00:44:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 00:44:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 111456 states and 188006 transitions. [2023-11-29 00:44:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-29 00:44:42,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:42,270 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:42,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 00:44:42,270 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:42,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1944654178, now seen corresponding path program 1 times [2023-11-29 00:44:42,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:42,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526841648] [2023-11-29 00:44:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:42,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:44:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:44:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:44:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 00:44:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:44:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:44:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:44:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:44:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:44:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:44:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:44:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:44:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:44:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 00:44:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:44:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 00:44:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:44:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 00:44:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 00:44:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 00:44:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 00:44:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 00:44:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 00:44:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 00:44:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 00:44:42,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526841648] [2023-11-29 00:44:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526841648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:42,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:42,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:44:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192348578] [2023-11-29 00:44:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:44:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:44:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:44:42,874 INFO L87 Difference]: Start difference. First operand 111456 states and 188006 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23)