./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu --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 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:54,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:54,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:06:54,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:54,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:54,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:54,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:54,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:54,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:54,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:54,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:54,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:54,346 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:54,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:54,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:54,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:54,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:54,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:54,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:54,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:54,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:54,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:54,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:54,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:54,354 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:54,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:54,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:54,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:54,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:54,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:54,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:54,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:54,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:54,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:54,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:54,359 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:54,359 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:54,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:54,360 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:54,360 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_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d [2023-11-19 08:06:54,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:54,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:54,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:54,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:54,684 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:54,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2023-11-19 08:06:57,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:58,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:58,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2023-11-19 08:06:58,271 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/data/8db6f8289/a513d170d96445ff9fc4d4aedef806e7/FLAG4cbff3a6a [2023-11-19 08:06:58,286 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/data/8db6f8289/a513d170d96445ff9fc4d4aedef806e7 [2023-11-19 08:06:58,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:58,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:58,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:58,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:58,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:58,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9d39d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58, skipping insertion in model container [2023-11-19 08:06:58,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:58,848 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_b7b2f811-44c2-4822-b2da-9e12a6b037be/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2023-11-19 08:06:58,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:58,923 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:58,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-19 08:06:58,944 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [64] [2023-11-19 08:06:58,944 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [185] [2023-11-19 08:06:58,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [858] [2023-11-19 08:06:58,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1219] [2023-11-19 08:06:58,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1254] [2023-11-19 08:06:58,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1441] [2023-11-19 08:06:58,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2965] [2023-11-19 08:06:58,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2974] [2023-11-19 08:06:58,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3065] [2023-11-19 08:06:59,072 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_b7b2f811-44c2-4822-b2da-9e12a6b037be/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2023-11-19 08:06:59,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:59,126 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:59,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59 WrapperNode [2023-11-19 08:06:59,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:59,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:59,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:59,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:59,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,271 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1107 [2023-11-19 08:06:59,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:59,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:59,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:59,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:59,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:59,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:59,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:59,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:59,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:59,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:59,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:59,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-19 08:06:59,469 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-19 08:06:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-19 08:06:59,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-19 08:06:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-19 08:06:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-19 08:06:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-19 08:06:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-19 08:06:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-19 08:06:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-19 08:06:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-19 08:06:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-19 08:06:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-19 08:06:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-19 08:06:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-19 08:06:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-19 08:06:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 08:06:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 08:06:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 08:06:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 08:06:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-19 08:06:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-19 08:06:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 08:06:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 08:06:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-19 08:06:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-19 08:06:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-19 08:06:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-19 08:06:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-19 08:06:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-19 08:06:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-19 08:06:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-19 08:06:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-19 08:06:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-19 08:06:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-19 08:06:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-19 08:06:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-19 08:06:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-19 08:06:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-19 08:06:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-19 08:06:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-19 08:06:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-19 08:06:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-19 08:06:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-19 08:06:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-19 08:06:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-19 08:06:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-19 08:06:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-19 08:06:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-19 08:06:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-19 08:06:59,664 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:59,668 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:07:01,094 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:07:01,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:07:01,115 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:07:01,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:01 BoogieIcfgContainer [2023-11-19 08:07:01,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:07:01,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:07:01,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:07:01,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:07:01,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:58" (1/3) ... [2023-11-19 08:07:01,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f33073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:01, skipping insertion in model container [2023-11-19 08:07:01,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59" (2/3) ... [2023-11-19 08:07:01,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f33073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:01, skipping insertion in model container [2023-11-19 08:07:01,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:01" (3/3) ... [2023-11-19 08:07:01,140 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2023-11-19 08:07:01,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:07:01,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:07:01,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:01,258 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;@4c3eed58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:01,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:07:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-19 08:07:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 08:07:01,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:01,316 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:01,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:01,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1483608375, now seen corresponding path program 1 times [2023-11-19 08:07:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828716343] [2023-11-19 08:07:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:07:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:07:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:07:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:07:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828716343] [2023-11-19 08:07:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828716343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249664280] [2023-11-19 08:07:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:03,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:03,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:03,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:03,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:07:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:03,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:07:03,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:07:03,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249664280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:03,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:03,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-19 08:07:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604406880] [2023-11-19 08:07:03,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:03,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:07:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:07:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:03,995 INFO L87 Difference]: Start difference. First operand has 567 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 08:07:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:04,112 INFO L93 Difference]: Finished difference Result 588 states and 971 transitions. [2023-11-19 08:07:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:07:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2023-11-19 08:07:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:04,145 INFO L225 Difference]: With dead ends: 588 [2023-11-19 08:07:04,148 INFO L226 Difference]: Without dead ends: 559 [2023-11-19 08:07:04,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:04,159 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:04,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-19 08:07:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-19 08:07:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 454 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 925 transitions. [2023-11-19 08:07:04,304 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 925 transitions. Word has length 125 [2023-11-19 08:07:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:04,307 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 925 transitions. [2023-11-19 08:07:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 08:07:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 925 transitions. [2023-11-19 08:07:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 08:07:04,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:04,321 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:04,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:07:04,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:07:04,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:04,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:04,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1848803770, now seen corresponding path program 1 times [2023-11-19 08:07:04,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:04,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488091032] [2023-11-19 08:07:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:04,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:07:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:07:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:07:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:07:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:05,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488091032] [2023-11-19 08:07:05,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488091032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374036414] [2023-11-19 08:07:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:05,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:05,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:07:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:06,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:06,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:06,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374036414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:06,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 08:07:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025421728] [2023-11-19 08:07:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:06,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:07:06,211 INFO L87 Difference]: Start difference. First operand 559 states and 925 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:06,356 INFO L93 Difference]: Finished difference Result 1109 states and 1842 transitions. [2023-11-19 08:07:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:06,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2023-11-19 08:07:06,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:06,363 INFO L225 Difference]: With dead ends: 1109 [2023-11-19 08:07:06,363 INFO L226 Difference]: Without dead ends: 559 [2023-11-19 08:07:06,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:06,375 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 14 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:06,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2726 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-19 08:07:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-19 08:07:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 435 states have (on average 1.6804597701149426) internal successors, (731), 454 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 924 transitions. [2023-11-19 08:07:06,423 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 924 transitions. Word has length 127 [2023-11-19 08:07:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:06,423 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 924 transitions. [2023-11-19 08:07:06,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 924 transitions. [2023-11-19 08:07:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 08:07:06,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:06,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:06,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:06,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:06,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:06,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:06,645 INFO L85 PathProgramCache]: Analyzing trace with hash -452485452, now seen corresponding path program 1 times [2023-11-19 08:07:06,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:06,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894670385] [2023-11-19 08:07:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 08:07:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 08:07:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:07,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:07,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894670385] [2023-11-19 08:07:07,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894670385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187925628] [2023-11-19 08:07:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:07,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:07,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:07,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:07:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:08,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:08,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:08,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187925628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:08,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 08:07:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137219123] [2023-11-19 08:07:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:08,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:08,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:08,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:07:08,296 INFO L87 Difference]: Start difference. First operand 559 states and 924 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:08,381 INFO L93 Difference]: Finished difference Result 1109 states and 1840 transitions. [2023-11-19 08:07:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:08,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2023-11-19 08:07:08,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:08,388 INFO L225 Difference]: With dead ends: 1109 [2023-11-19 08:07:08,389 INFO L226 Difference]: Without dead ends: 559 [2023-11-19 08:07:08,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:08,393 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 12 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:08,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2726 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-19 08:07:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-19 08:07:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 435 states have (on average 1.6781609195402298) internal successors, (730), 454 states have internal predecessors, (730), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 923 transitions. [2023-11-19 08:07:08,429 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 923 transitions. Word has length 129 [2023-11-19 08:07:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:08,429 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 923 transitions. [2023-11-19 08:07:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 923 transitions. [2023-11-19 08:07:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 08:07:08,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:08,435 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:08,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:08,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:08,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:08,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1348267066, now seen corresponding path program 1 times [2023-11-19 08:07:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:08,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747314632] [2023-11-19 08:07:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 08:07:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-19 08:07:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747314632] [2023-11-19 08:07:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747314632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412224878] [2023-11-19 08:07:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:09,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:09,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:09,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:07:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:10,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:10,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:10,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:10,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412224878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:10,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:10,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 08:07:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372418875] [2023-11-19 08:07:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:10,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:10,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:07:10,195 INFO L87 Difference]: Start difference. First operand 559 states and 923 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:10,299 INFO L93 Difference]: Finished difference Result 1116 states and 1847 transitions. [2023-11-19 08:07:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2023-11-19 08:07:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:10,307 INFO L225 Difference]: With dead ends: 1116 [2023-11-19 08:07:10,308 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 08:07:10,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:10,314 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 20 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:10,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2726 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 08:07:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-19 08:07:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.674943566591422) internal successors, (742), 462 states have internal predecessors, (742), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 935 transitions. [2023-11-19 08:07:10,360 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 935 transitions. Word has length 131 [2023-11-19 08:07:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:10,361 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 935 transitions. [2023-11-19 08:07:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 935 transitions. [2023-11-19 08:07:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 08:07:10,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:10,369 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:10,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:10,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:10,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:10,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1765631875, now seen corresponding path program 1 times [2023-11-19 08:07:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118708476] [2023-11-19 08:07:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 08:07:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:07:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-19 08:07:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:11,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118708476] [2023-11-19 08:07:11,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118708476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595235626] [2023-11-19 08:07:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:11,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:11,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:11,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:07:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:12,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:12,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:12,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595235626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 08:07:12,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608103708] [2023-11-19 08:07:12,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:12,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:07:12,075 INFO L87 Difference]: Start difference. First operand 568 states and 935 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:12,176 INFO L93 Difference]: Finished difference Result 1118 states and 1848 transitions. [2023-11-19 08:07:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:12,177 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2023-11-19 08:07:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:12,183 INFO L225 Difference]: With dead ends: 1118 [2023-11-19 08:07:12,183 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 08:07:12,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:12,191 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 18 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:12,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2726 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 08:07:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-19 08:07:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.672686230248307) internal successors, (741), 462 states have internal predecessors, (741), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 934 transitions. [2023-11-19 08:07:12,230 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 934 transitions. Word has length 132 [2023-11-19 08:07:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:12,231 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 934 transitions. [2023-11-19 08:07:12,231 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:12,231 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 934 transitions. [2023-11-19 08:07:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 08:07:12,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:12,238 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:12,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:12,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:12,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:12,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash 363213162, now seen corresponding path program 1 times [2023-11-19 08:07:12,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:12,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858202607] [2023-11-19 08:07:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:12,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:07:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:07:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:07:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:13,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858202607] [2023-11-19 08:07:13,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858202607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680406837] [2023-11-19 08:07:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:13,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:13,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:13,407 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:13,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:07:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:13,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:13,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680406837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:13,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:13,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 08:07:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030036019] [2023-11-19 08:07:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:13,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:07:13,895 INFO L87 Difference]: Start difference. First operand 568 states and 934 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:14,002 INFO L93 Difference]: Finished difference Result 1118 states and 1847 transitions. [2023-11-19 08:07:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2023-11-19 08:07:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:14,011 INFO L225 Difference]: With dead ends: 1118 [2023-11-19 08:07:14,011 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 08:07:14,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:14,016 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 17 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:14,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2726 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 08:07:14,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-19 08:07:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.670428893905192) internal successors, (740), 462 states have internal predecessors, (740), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 933 transitions. [2023-11-19 08:07:14,050 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 933 transitions. Word has length 133 [2023-11-19 08:07:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 933 transitions. [2023-11-19 08:07:14,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 933 transitions. [2023-11-19 08:07:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 08:07:14,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:14,056 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:14,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:07:14,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 688867943, now seen corresponding path program 1 times [2023-11-19 08:07:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459977607] [2023-11-19 08:07:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 08:07:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 08:07:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:15,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459977607] [2023-11-19 08:07:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459977607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:15,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704381766] [2023-11-19 08:07:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:15,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:15,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:15,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:15,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:07:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:15,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:07:15,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704381766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:15,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:15,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-19 08:07:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29807806] [2023-11-19 08:07:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:15,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:15,946 INFO L87 Difference]: Start difference. First operand 568 states and 933 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:16,152 INFO L93 Difference]: Finished difference Result 1129 states and 1868 transitions. [2023-11-19 08:07:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:16,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2023-11-19 08:07:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:16,170 INFO L225 Difference]: With dead ends: 1129 [2023-11-19 08:07:16,170 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 08:07:16,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:16,176 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 135 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:16,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2543 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 08:07:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-19 08:07:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.6591422121896162) internal successors, (735), 462 states have internal predecessors, (735), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 928 transitions. [2023-11-19 08:07:16,211 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 928 transitions. Word has length 134 [2023-11-19 08:07:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:16,212 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 928 transitions. [2023-11-19 08:07:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 928 transitions. [2023-11-19 08:07:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-19 08:07:16,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:16,220 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:16,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:16,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:16,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash -435662753, now seen corresponding path program 1 times [2023-11-19 08:07:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:16,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122512247] [2023-11-19 08:07:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:16,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:16,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-19 08:07:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 08:07:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:17,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122512247] [2023-11-19 08:07:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122512247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:17,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68048671] [2023-11-19 08:07:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:17,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:17,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:07:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:17,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:07:18,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:18,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68048671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:18,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:18,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-19 08:07:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188052218] [2023-11-19 08:07:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:18,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:18,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:18,011 INFO L87 Difference]: Start difference. First operand 568 states and 928 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:18,151 INFO L93 Difference]: Finished difference Result 1129 states and 1858 transitions. [2023-11-19 08:07:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:18,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-11-19 08:07:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:18,158 INFO L225 Difference]: With dead ends: 1129 [2023-11-19 08:07:18,158 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 08:07:18,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:18,162 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 129 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:18,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2543 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 08:07:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-19 08:07:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.6478555304740405) internal successors, (730), 462 states have internal predecessors, (730), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 923 transitions. [2023-11-19 08:07:18,189 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 923 transitions. Word has length 136 [2023-11-19 08:07:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 923 transitions. [2023-11-19 08:07:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 923 transitions. [2023-11-19 08:07:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 08:07:18,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:18,194 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:18,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:18,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 08:07:18,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:18,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1510243769, now seen corresponding path program 1 times [2023-11-19 08:07:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884969920] [2023-11-19 08:07:18,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:18,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 08:07:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 08:07:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:19,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:19,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884969920] [2023-11-19 08:07:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884969920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857970604] [2023-11-19 08:07:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:19,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:19,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:19,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:19,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:07:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:19,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:07:19,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857970604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-19 08:07:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011844744] [2023-11-19 08:07:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:19,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:19,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:19,804 INFO L87 Difference]: Start difference. First operand 568 states and 923 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:19,989 INFO L93 Difference]: Finished difference Result 1165 states and 1907 transitions. [2023-11-19 08:07:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2023-11-19 08:07:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:19,995 INFO L225 Difference]: With dead ends: 1165 [2023-11-19 08:07:19,995 INFO L226 Difference]: Without dead ends: 619 [2023-11-19 08:07:19,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:19,999 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 179 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:20,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2553 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-11-19 08:07:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2023-11-19 08:07:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 493 states have (on average 1.6531440162271804) internal successors, (815), 512 states have internal predecessors, (815), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1008 transitions. [2023-11-19 08:07:20,027 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1008 transitions. Word has length 138 [2023-11-19 08:07:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:20,027 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1008 transitions. [2023-11-19 08:07:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1008 transitions. [2023-11-19 08:07:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 08:07:20,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:20,033 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:20,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:20,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 08:07:20,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:20,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash -117520292, now seen corresponding path program 1 times [2023-11-19 08:07:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189755914] [2023-11-19 08:07:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:07:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:21,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189755914] [2023-11-19 08:07:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189755914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182494465] [2023-11-19 08:07:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:21,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:21,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:21,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:21,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:07:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:21,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:21,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:07:21,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182494465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:21,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-19 08:07:21,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133589830] [2023-11-19 08:07:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:21,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:21,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:21,826 INFO L87 Difference]: Start difference. First operand 619 states and 1008 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:22,036 INFO L93 Difference]: Finished difference Result 1180 states and 1931 transitions. [2023-11-19 08:07:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2023-11-19 08:07:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:22,043 INFO L225 Difference]: With dead ends: 1180 [2023-11-19 08:07:22,043 INFO L226 Difference]: Without dead ends: 619 [2023-11-19 08:07:22,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:22,047 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 173 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:22,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2553 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-11-19 08:07:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2023-11-19 08:07:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 493 states have (on average 1.643002028397566) internal successors, (810), 512 states have internal predecessors, (810), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:07:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1003 transitions. [2023-11-19 08:07:22,074 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1003 transitions. Word has length 139 [2023-11-19 08:07:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:22,074 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1003 transitions. [2023-11-19 08:07:22,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1003 transitions. [2023-11-19 08:07:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 08:07:22,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:22,079 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:22,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:22,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:22,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:22,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1139515995, now seen corresponding path program 1 times [2023-11-19 08:07:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:22,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250301723] [2023-11-19 08:07:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:07:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 08:07:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250301723] [2023-11-19 08:07:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250301723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:23,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418667453] [2023-11-19 08:07:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:23,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:23,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:23,402 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:23,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:07:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:07:23,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:07:23,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418667453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:23,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:23,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-19 08:07:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506365552] [2023-11-19 08:07:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:07:23,929 INFO L87 Difference]: Start difference. First operand 619 states and 1003 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:24,132 INFO L93 Difference]: Finished difference Result 1203 states and 1961 transitions. [2023-11-19 08:07:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:07:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2023-11-19 08:07:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:24,142 INFO L225 Difference]: With dead ends: 1203 [2023-11-19 08:07:24,142 INFO L226 Difference]: Without dead ends: 657 [2023-11-19 08:07:24,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:07:24,149 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 173 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 6143 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 6143 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-19 08:07:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 638. [2023-11-19 08:07:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 509 states have (on average 1.6424361493123771) internal successors, (836), 530 states have internal predecessors, (836), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2023-11-19 08:07:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1033 transitions. [2023-11-19 08:07:24,186 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1033 transitions. Word has length 139 [2023-11-19 08:07:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:24,188 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1033 transitions. [2023-11-19 08:07:24,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1033 transitions. [2023-11-19 08:07:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 08:07:24,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:24,193 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:24,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:24,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:24,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:24,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2033172102, now seen corresponding path program 1 times [2023-11-19 08:07:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078066440] [2023-11-19 08:07:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:07:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:25,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:25,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078066440] [2023-11-19 08:07:25,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078066440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:25,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663394114] [2023-11-19 08:07:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:25,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:25,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:25,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:07:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:07:25,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:25,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:25,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663394114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:25,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:25,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-19 08:07:25,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68533549] [2023-11-19 08:07:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:07:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:07:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:25,816 INFO L87 Difference]: Start difference. First operand 638 states and 1033 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:25,944 INFO L93 Difference]: Finished difference Result 1141 states and 1861 transitions. [2023-11-19 08:07:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:07:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2023-11-19 08:07:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:25,952 INFO L225 Difference]: With dead ends: 1141 [2023-11-19 08:07:25,952 INFO L226 Difference]: Without dead ends: 662 [2023-11-19 08:07:25,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:25,957 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 134 mSDsluCounter, 4419 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5323 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:25,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5323 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-19 08:07:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 657. [2023-11-19 08:07:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.641904761904762) internal successors, (862), 548 states have internal predecessors, (862), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2023-11-19 08:07:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1063 transitions. [2023-11-19 08:07:25,988 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1063 transitions. Word has length 139 [2023-11-19 08:07:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:25,989 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1063 transitions. [2023-11-19 08:07:25,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1063 transitions. [2023-11-19 08:07:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 08:07:25,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:25,995 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:26,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:07:26,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:26,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1429462892, now seen corresponding path program 1 times [2023-11-19 08:07:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:26,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006736788] [2023-11-19 08:07:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 08:07:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 08:07:27,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:27,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006736788] [2023-11-19 08:07:27,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006736788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:27,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27686696] [2023-11-19 08:07:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:27,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:27,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:27,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:27,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:07:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:07:27,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:27,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:27,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27686696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:27,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:27,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-19 08:07:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883617270] [2023-11-19 08:07:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:27,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:07:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:07:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:07:27,664 INFO L87 Difference]: Start difference. First operand 657 states and 1063 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:27,814 INFO L93 Difference]: Finished difference Result 1171 states and 1912 transitions. [2023-11-19 08:07:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:07:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2023-11-19 08:07:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:27,822 INFO L225 Difference]: With dead ends: 1171 [2023-11-19 08:07:27,822 INFO L226 Difference]: Without dead ends: 692 [2023-11-19 08:07:27,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:07:27,826 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 143 mSDsluCounter, 4409 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:27,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5313 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-11-19 08:07:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 657. [2023-11-19 08:07:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.641904761904762) internal successors, (862), 548 states have internal predecessors, (862), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2023-11-19 08:07:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1063 transitions. [2023-11-19 08:07:27,857 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1063 transitions. Word has length 140 [2023-11-19 08:07:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:27,857 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1063 transitions. [2023-11-19 08:07:27,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1063 transitions. [2023-11-19 08:07:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 08:07:27,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:27,863 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:27,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:28,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:28,088 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:28,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1870169108, now seen corresponding path program 1 times [2023-11-19 08:07:28,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26209556] [2023-11-19 08:07:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 08:07:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:07:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:28,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26209556] [2023-11-19 08:07:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26209556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:28,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269129368] [2023-11-19 08:07:28,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:28,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:28,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 08:07:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:29,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:07:29,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:29,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:29,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269129368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:29,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-19 08:07:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395063765] [2023-11-19 08:07:29,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:29,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:29,487 INFO L87 Difference]: Start difference. First operand 657 states and 1063 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:29,743 INFO L93 Difference]: Finished difference Result 1156 states and 1886 transitions. [2023-11-19 08:07:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:07:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2023-11-19 08:07:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:29,750 INFO L225 Difference]: With dead ends: 1156 [2023-11-19 08:07:29,750 INFO L226 Difference]: Without dead ends: 677 [2023-11-19 08:07:29,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:07:29,755 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 173 mSDsluCounter, 5257 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:29,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 6151 Invalid, 159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-11-19 08:07:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2023-11-19 08:07:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.641904761904762) internal successors, (862), 548 states have internal predecessors, (862), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2023-11-19 08:07:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1063 transitions. [2023-11-19 08:07:29,787 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1063 transitions. Word has length 140 [2023-11-19 08:07:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:29,788 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1063 transitions. [2023-11-19 08:07:29,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1063 transitions. [2023-11-19 08:07:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 08:07:29,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:29,794 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:29,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:30,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:30,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1619140609, now seen corresponding path program 1 times [2023-11-19 08:07:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:30,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836962207] [2023-11-19 08:07:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 08:07:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 08:07:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 08:07:30,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:30,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836962207] [2023-11-19 08:07:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836962207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973532403] [2023-11-19 08:07:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:30,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:30,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:30,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 08:07:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:31,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:07:31,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973532403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:31,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-19 08:07:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956181838] [2023-11-19 08:07:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:31,192 INFO L87 Difference]: Start difference. First operand 657 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:31,268 INFO L93 Difference]: Finished difference Result 1208 states and 1971 transitions. [2023-11-19 08:07:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2023-11-19 08:07:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:31,274 INFO L225 Difference]: With dead ends: 1208 [2023-11-19 08:07:31,274 INFO L226 Difference]: Without dead ends: 657 [2023-11-19 08:07:31,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:31,278 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 23 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:31,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2695 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-19 08:07:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2023-11-19 08:07:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6342857142857143) internal successors, (858), 548 states have internal predecessors, (858), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2023-11-19 08:07:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1059 transitions. [2023-11-19 08:07:31,306 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1059 transitions. Word has length 140 [2023-11-19 08:07:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:31,307 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1059 transitions. [2023-11-19 08:07:31,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1059 transitions. [2023-11-19 08:07:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 08:07:31,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:31,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:31,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:31,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:31,528 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:31,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:31,528 INFO L85 PathProgramCache]: Analyzing trace with hash -536325934, now seen corresponding path program 1 times [2023-11-19 08:07:31,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:31,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275472436] [2023-11-19 08:07:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:07:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 08:07:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:32,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275472436] [2023-11-19 08:07:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275472436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:32,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79358835] [2023-11-19 08:07:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:32,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:32,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:32,377 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:32,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 08:07:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:07:32,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:07:32,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79358835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:32,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:32,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-19 08:07:32,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255106546] [2023-11-19 08:07:32,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:32,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:32,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:32,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:07:32,885 INFO L87 Difference]: Start difference. First operand 657 states and 1059 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:33,084 INFO L93 Difference]: Finished difference Result 1156 states and 1883 transitions. [2023-11-19 08:07:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:07:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-11-19 08:07:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:33,091 INFO L225 Difference]: With dead ends: 1156 [2023-11-19 08:07:33,091 INFO L226 Difference]: Without dead ends: 677 [2023-11-19 08:07:33,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:07:33,095 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 181 mSDsluCounter, 5219 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 6107 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:33,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 6107 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-11-19 08:07:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2023-11-19 08:07:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6342857142857143) internal successors, (858), 548 states have internal predecessors, (858), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2023-11-19 08:07:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1059 transitions. [2023-11-19 08:07:33,124 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1059 transitions. Word has length 141 [2023-11-19 08:07:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:33,125 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1059 transitions. [2023-11-19 08:07:33,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 08:07:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1059 transitions. [2023-11-19 08:07:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-19 08:07:33,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:33,130 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:33,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:33,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:33,344 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:33,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash -972203663, now seen corresponding path program 1 times [2023-11-19 08:07:33,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:33,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836324348] [2023-11-19 08:07:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:33,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:07:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:07:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 08:07:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836324348] [2023-11-19 08:07:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836324348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684413775] [2023-11-19 08:07:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:34,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:34,205 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 08:07:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:07:34,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 08:07:34,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684413775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-19 08:07:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155979155] [2023-11-19 08:07:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:34,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:34,648 INFO L87 Difference]: Start difference. First operand 657 states and 1059 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:34,721 INFO L93 Difference]: Finished difference Result 1256 states and 2043 transitions. [2023-11-19 08:07:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2023-11-19 08:07:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:34,727 INFO L225 Difference]: With dead ends: 1256 [2023-11-19 08:07:34,728 INFO L226 Difference]: Without dead ends: 685 [2023-11-19 08:07:34,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:34,732 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 14 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:34,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2672 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-19 08:07:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 681. [2023-11-19 08:07:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 549 states have (on average 1.6138433515482695) internal successors, (886), 572 states have internal predecessors, (886), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2023-11-19 08:07:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1087 transitions. [2023-11-19 08:07:34,761 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1087 transitions. Word has length 142 [2023-11-19 08:07:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:34,762 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1087 transitions. [2023-11-19 08:07:34,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 08:07:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1087 transitions. [2023-11-19 08:07:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-19 08:07:34,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:34,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:34,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:34,988 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:34,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -474940870, now seen corresponding path program 1 times [2023-11-19 08:07:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:34,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686934123] [2023-11-19 08:07:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:07:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:07:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:07:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 08:07:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:07:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 08:07:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686934123] [2023-11-19 08:07:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686934123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752316609] [2023-11-19 08:07:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:35,792 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:35,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 08:07:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:36,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:36,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:07:36,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:36,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752316609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:36,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:36,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 08:07:36,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190665248] [2023-11-19 08:07:36,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:36,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:36,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:36,261 INFO L87 Difference]: Start difference. First operand 681 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:07:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:36,854 INFO L93 Difference]: Finished difference Result 1163 states and 1905 transitions. [2023-11-19 08:07:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2023-11-19 08:07:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:36,861 INFO L225 Difference]: With dead ends: 1163 [2023-11-19 08:07:36,861 INFO L226 Difference]: Without dead ends: 689 [2023-11-19 08:07:36,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:36,866 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 857 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:36,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 2286 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:07:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-11-19 08:07:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2023-11-19 08:07:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 556 states have (on average 1.6151079136690647) internal successors, (898), 579 states have internal predecessors, (898), 101 states have call successors, (101), 28 states have call predecessors, (101), 31 states have return successors, (101), 94 states have call predecessors, (101), 96 states have call successors, (101) [2023-11-19 08:07:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1100 transitions. [2023-11-19 08:07:36,898 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1100 transitions. Word has length 142 [2023-11-19 08:07:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:36,899 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1100 transitions. [2023-11-19 08:07:36,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:07:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1100 transitions. [2023-11-19 08:07:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 08:07:36,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:36,905 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:36,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:37,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:37,116 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:37,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 704724358, now seen corresponding path program 1 times [2023-11-19 08:07:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:37,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287728080] [2023-11-19 08:07:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:07:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:07:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 08:07:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 08:07:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-19 08:07:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 08:07:37,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287728080] [2023-11-19 08:07:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287728080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636376069] [2023-11-19 08:07:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:37,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:37,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:37,952 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:37,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 08:07:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:38,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:38,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:07:38,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:38,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636376069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 08:07:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990772212] [2023-11-19 08:07:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:38,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:38,505 INFO L87 Difference]: Start difference. First operand 689 states and 1100 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:07:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:39,067 INFO L93 Difference]: Finished difference Result 1179 states and 1928 transitions. [2023-11-19 08:07:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2023-11-19 08:07:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:39,074 INFO L225 Difference]: With dead ends: 1179 [2023-11-19 08:07:39,074 INFO L226 Difference]: Without dead ends: 697 [2023-11-19 08:07:39,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:39,078 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 847 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:39,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2286 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:07:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-11-19 08:07:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2023-11-19 08:07:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 563 states have (on average 1.6163410301953818) internal successors, (910), 586 states have internal predecessors, (910), 101 states have call successors, (101), 29 states have call predecessors, (101), 32 states have return successors, (102), 94 states have call predecessors, (102), 96 states have call successors, (102) [2023-11-19 08:07:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1113 transitions. [2023-11-19 08:07:39,108 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1113 transitions. Word has length 144 [2023-11-19 08:07:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:39,109 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1113 transitions. [2023-11-19 08:07:39,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:07:39,109 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1113 transitions. [2023-11-19 08:07:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-19 08:07:39,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:39,115 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:39,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:39,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:39,328 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:39,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash -692434758, now seen corresponding path program 1 times [2023-11-19 08:07:39,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:39,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934765740] [2023-11-19 08:07:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:39,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:07:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 08:07:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:07:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 08:07:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-19 08:07:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:07:40,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934765740] [2023-11-19 08:07:40,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934765740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355564027] [2023-11-19 08:07:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:40,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:40,052 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:40,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 08:07:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:40,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:07:40,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:40,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355564027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:40,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:40,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 08:07:40,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961214212] [2023-11-19 08:07:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:40,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:40,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:40,581 INFO L87 Difference]: Start difference. First operand 697 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:07:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:41,197 INFO L93 Difference]: Finished difference Result 1195 states and 1951 transitions. [2023-11-19 08:07:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2023-11-19 08:07:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:41,206 INFO L225 Difference]: With dead ends: 1195 [2023-11-19 08:07:41,206 INFO L226 Difference]: Without dead ends: 705 [2023-11-19 08:07:41,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:41,211 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 834 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:41,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2286 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:07:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-11-19 08:07:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2023-11-19 08:07:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 570 states have (on average 1.6175438596491227) internal successors, (922), 593 states have internal predecessors, (922), 101 states have call successors, (101), 30 states have call predecessors, (101), 33 states have return successors, (103), 94 states have call predecessors, (103), 96 states have call successors, (103) [2023-11-19 08:07:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1126 transitions. [2023-11-19 08:07:41,248 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1126 transitions. Word has length 146 [2023-11-19 08:07:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:41,249 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 1126 transitions. [2023-11-19 08:07:41,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:07:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1126 transitions. [2023-11-19 08:07:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-19 08:07:41,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:41,256 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:07:41,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:41,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:41,472 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:41,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash 682491518, now seen corresponding path program 1 times [2023-11-19 08:07:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:41,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567751672] [2023-11-19 08:07:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:07:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:07:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:07:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:07:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:07:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 08:07:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:07:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 08:07:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 08:07:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 08:07:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567751672] [2023-11-19 08:07:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567751672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:42,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289275131] [2023-11-19 08:07:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:42,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:42,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:42,296 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:42,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2f811-44c2-4822-b2da-9e12a6b037be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process