./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/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_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/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_1304d120-6e78-4809-81b7-69d7c337c6d8/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 1c4d0e54eab5e94cf1a4af64165a2546f1c45e063bd8600195a743522777000c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:02,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:02,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:33:02,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:02,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:02,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:02,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:02,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:02,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:02,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:02,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:02,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:02,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:02,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:02,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:02,311 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:02,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:02,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:02,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:02,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:02,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:02,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:02,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:02,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:02,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:02,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:02,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:02,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:02,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:02,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:02,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:02,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:02,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:02,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:02,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:02,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:02,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:02,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:02,324 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:02,325 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_1304d120-6e78-4809-81b7-69d7c337c6d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c4d0e54eab5e94cf1a4af64165a2546f1c45e063bd8600195a743522777000c [2023-11-19 07:33:02,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:02,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:02,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:02,681 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:02,682 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:02,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c [2023-11-19 07:33:05,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:06,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:06,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c [2023-11-19 07:33:06,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/data/e37957a75/f6754a5972bc4284aa79417825abb88c/FLAGcb21822ae [2023-11-19 07:33:06,198 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/data/e37957a75/f6754a5972bc4284aa79417825abb88c [2023-11-19 07:33:06,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:06,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:06,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:06,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:06,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:06,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:06" (1/1) ... [2023-11-19 07:33:06,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c39708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:06, skipping insertion in model container [2023-11-19 07:33:06,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:06" (1/1) ... [2023-11-19 07:33:06,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:07,003 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_1304d120-6e78-4809-81b7-69d7c337c6d8/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c[40661,40674] [2023-11-19 07:33:07,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:07,140 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:07,154 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-11-19 07:33:07,156 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [167] [2023-11-19 07:33:07,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [184] [2023-11-19 07:33:07,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [550] [2023-11-19 07:33:07,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [612] [2023-11-19 07:33:07,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [650] [2023-11-19 07:33:07,159 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1054] [2023-11-19 07:33:07,160 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1435] [2023-11-19 07:33:07,160 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1756] [2023-11-19 07:33:07,160 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1978] [2023-11-19 07:33:07,161 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1987] [2023-11-19 07:33:07,299 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_1304d120-6e78-4809-81b7-69d7c337c6d8/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c[40661,40674] [2023-11-19 07:33:07,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:07,398 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:07,406 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:07,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07 WrapperNode [2023-11-19 07:33:07,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:07,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:07,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:07,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:07,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,535 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 1110 [2023-11-19 07:33:07,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:07,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:07,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:07,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:07,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:07,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:07,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:07,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:07,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (1/1) ... [2023-11-19 07:33:07,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:07,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:07,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:07,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:07,783 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-19 07:33:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-19 07:33:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-19 07:33:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-19 07:33:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 07:33:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 07:33:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-19 07:33:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-19 07:33:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 07:33:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 07:33:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 07:33:07,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 07:33:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 07:33:07,787 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 07:33:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 07:33:07,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 07:33:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 07:33:07,788 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 07:33:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 07:33:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 07:33:07,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 07:33:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 07:33:07,792 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 07:33:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 07:33:07,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 07:33:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 07:33:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 07:33:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-19 07:33:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-19 07:33:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-19 07:33:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-19 07:33:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 07:33:07,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 07:33:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 07:33:07,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 07:33:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 07:33:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 07:33:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 07:33:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 07:33:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-19 07:33:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-19 07:33:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 07:33:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 07:33:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 07:33:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 07:33:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 07:33:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 07:33:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 07:33:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 07:33:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-19 07:33:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-19 07:33:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:08,091 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:08,094 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:09,190 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:09,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:09,205 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:33:09,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:09 BoogieIcfgContainer [2023-11-19 07:33:09,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:09,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:09,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:09,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:09,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:06" (1/3) ... [2023-11-19 07:33:09,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617626c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:09, skipping insertion in model container [2023-11-19 07:33:09,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:07" (2/3) ... [2023-11-19 07:33:09,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617626c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:09, skipping insertion in model container [2023-11-19 07:33:09,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:09" (3/3) ... [2023-11-19 07:33:09,226 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product27.cil.c [2023-11-19 07:33:09,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:09,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:33:09,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:09,393 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;@7d40cc3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:09,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:33:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 420 states, 327 states have (on average 1.5535168195718654) internal successors, (508), 332 states have internal predecessors, (508), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-19 07:33:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 07:33:09,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:09,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 07:33:09,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:09,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1553768308, now seen corresponding path program 1 times [2023-11-19 07:33:09,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:09,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938873757] [2023-11-19 07:33:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:09,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:33:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:33:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:33:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:33:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 07:33:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:33:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-19 07:33:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:33:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 07:33:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:33:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-19 07:33:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:33:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:10,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938873757] [2023-11-19 07:33:10,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938873757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748746506] [2023-11-19 07:33:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:10,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:10,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:10,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:10,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:33:10,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:33:11,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:11,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748746506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:11,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-19 07:33:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171190831] [2023-11-19 07:33:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:11,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:33:11,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:11,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:33:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:11,087 INFO L87 Difference]: Start difference. First operand has 420 states, 327 states have (on average 1.5535168195718654) internal successors, (508), 332 states have internal predecessors, (508), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:33:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:11,225 INFO L93 Difference]: Finished difference Result 641 states and 962 transitions. [2023-11-19 07:33:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:33:11,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2023-11-19 07:33:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:11,249 INFO L225 Difference]: With dead ends: 641 [2023-11-19 07:33:11,249 INFO L226 Difference]: Without dead ends: 412 [2023-11-19 07:33:11,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:11,262 INFO L413 NwaCegarLoop]: 634 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, 634 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 07:33:11,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-19 07:33:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2023-11-19 07:33:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 321 states have (on average 1.5482866043613708) internal successors, (497), 324 states have internal predecessors, (497), 66 states have call successors, (66), 25 states have call predecessors, (66), 24 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:33:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2023-11-19 07:33:11,366 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 112 [2023-11-19 07:33:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:11,368 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2023-11-19 07:33:11,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:33:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2023-11-19 07:33:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:33:11,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:11,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:11,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:11,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:33:11,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:11,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -179595385, now seen corresponding path program 1 times [2023-11-19 07:33:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54019048] [2023-11-19 07:33:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:33:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:33:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:33:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:33:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-19 07:33:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-19 07:33:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 07:33:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:33:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-19 07:33:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:33:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-19 07:33:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:33:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:33:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-19 07:33:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:33:12,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:12,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54019048] [2023-11-19 07:33:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54019048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655250819] [2023-11-19 07:33:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:12,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:12,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:12,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:12,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:33:12,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655250819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:12,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-19 07:33:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523295317] [2023-11-19 07:33:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:12,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:12,597 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:33:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:12,659 INFO L93 Difference]: Finished difference Result 630 states and 936 transitions. [2023-11-19 07:33:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:12,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2023-11-19 07:33:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:12,668 INFO L225 Difference]: With dead ends: 630 [2023-11-19 07:33:12,668 INFO L226 Difference]: Without dead ends: 415 [2023-11-19 07:33:12,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:12,672 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:12,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1246 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-19 07:33:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 414. [2023-11-19 07:33:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 323 states have (on average 1.5448916408668731) internal successors, (499), 326 states have internal predecessors, (499), 66 states have call successors, (66), 25 states have call predecessors, (66), 24 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:33:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 628 transitions. [2023-11-19 07:33:12,715 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 628 transitions. Word has length 132 [2023-11-19 07:33:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:12,715 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 628 transitions. [2023-11-19 07:33:12,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:33:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 628 transitions. [2023-11-19 07:33:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 07:33:12,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:12,720 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 07:33:12,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:33:12,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:12,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:12,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1636196821, now seen corresponding path program 1 times [2023-11-19 07:33:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549843864] [2023-11-19 07:33:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:33:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:33:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:33:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 07:33:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:33:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 07:33:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 07:33:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 07:33:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:33:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:33:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-19 07:33:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:33:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:13,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549843864] [2023-11-19 07:33:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549843864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:13,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075116941] [2023-11-19 07:33:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:13,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:13,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:13,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:13,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:33:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:33:13,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:33:13,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075116941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:13,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:13,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-19 07:33:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534439410] [2023-11-19 07:33:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:13,805 INFO L87 Difference]: Start difference. First operand 414 states and 628 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:33:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:13,850 INFO L93 Difference]: Finished difference Result 881 states and 1356 transitions. [2023-11-19 07:33:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-11-19 07:33:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:13,857 INFO L225 Difference]: With dead ends: 881 [2023-11-19 07:33:13,857 INFO L226 Difference]: Without dead ends: 494 [2023-11-19 07:33:13,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:13,861 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 142 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:13,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1215 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-19 07:33:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 486. [2023-11-19 07:33:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 381 states have (on average 1.5643044619422573) internal successors, (596), 384 states have internal predecessors, (596), 80 states have call successors, (80), 25 states have call predecessors, (80), 24 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 07:33:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 753 transitions. [2023-11-19 07:33:13,921 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 753 transitions. Word has length 122 [2023-11-19 07:33:13,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:13,922 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 753 transitions. [2023-11-19 07:33:13,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:33:13,922 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 753 transitions. [2023-11-19 07:33:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:33:13,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:13,927 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 07:33:13,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:14,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:14,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -176596586, now seen corresponding path program 1 times [2023-11-19 07:33:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662143059] [2023-11-19 07:33:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:33:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:33:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:33:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-19 07:33:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:33:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-19 07:33:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-19 07:33:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-19 07:33:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-19 07:33:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-19 07:33:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-19 07:33:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:33:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662143059] [2023-11-19 07:33:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662143059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16231340] [2023-11-19 07:33:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:14,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:14,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:14,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:14,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:33:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:33:14,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:33:15,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16231340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:15,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:15,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-19 07:33:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002291394] [2023-11-19 07:33:15,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:15,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:33:15,036 INFO L87 Difference]: Start difference. First operand 486 states and 753 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 07:33:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:15,164 INFO L93 Difference]: Finished difference Result 963 states and 1496 transitions. [2023-11-19 07:33:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-11-19 07:33:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:15,173 INFO L225 Difference]: With dead ends: 963 [2023-11-19 07:33:15,174 INFO L226 Difference]: Without dead ends: 488 [2023-11-19 07:33:15,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:33:15,181 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 8 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:15,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2457 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-19 07:33:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2023-11-19 07:33:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 382 states have (on average 1.5628272251308901) internal successors, (597), 386 states have internal predecessors, (597), 80 states have call successors, (80), 25 states have call predecessors, (80), 25 states have return successors, (79), 76 states have call predecessors, (79), 77 states have call successors, (79) [2023-11-19 07:33:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 756 transitions. [2023-11-19 07:33:15,231 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 756 transitions. Word has length 123 [2023-11-19 07:33:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:15,232 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 756 transitions. [2023-11-19 07:33:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 07:33:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 756 transitions. [2023-11-19 07:33:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:33:15,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:15,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:15,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:15,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:15,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:15,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash 17221766, now seen corresponding path program 1 times [2023-11-19 07:33:15,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:15,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659643458] [2023-11-19 07:33:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 07:33:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:33:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:33:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 07:33:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:33:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:33:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:33:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:33:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-19 07:33:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:33:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:33:15,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659643458] [2023-11-19 07:33:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659643458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610133905] [2023-11-19 07:33:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:15,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:15,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:33:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:16,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:33:16,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:33:16,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:16,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610133905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:16,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:16,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-19 07:33:16,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688826715] [2023-11-19 07:33:16,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:16,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:33:16,375 INFO L87 Difference]: Start difference. First operand 488 states and 756 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 07:33:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:16,505 INFO L93 Difference]: Finished difference Result 965 states and 1501 transitions. [2023-11-19 07:33:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2023-11-19 07:33:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:16,512 INFO L225 Difference]: With dead ends: 965 [2023-11-19 07:33:16,513 INFO L226 Difference]: Without dead ends: 490 [2023-11-19 07:33:16,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:33:16,517 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 8 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:16,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2443 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-19 07:33:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2023-11-19 07:33:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 383 states have (on average 1.5613577023498695) internal successors, (598), 388 states have internal predecessors, (598), 80 states have call successors, (80), 25 states have call predecessors, (80), 26 states have return successors, (84), 76 states have call predecessors, (84), 77 states have call successors, (84) [2023-11-19 07:33:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 762 transitions. [2023-11-19 07:33:16,558 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 762 transitions. Word has length 124 [2023-11-19 07:33:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:16,558 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 762 transitions. [2023-11-19 07:33:16,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 07:33:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 762 transitions. [2023-11-19 07:33:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 07:33:16,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:16,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:16,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:16,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:16,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:16,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:16,787 INFO L85 PathProgramCache]: Analyzing trace with hash 684875090, now seen corresponding path program 1 times [2023-11-19 07:33:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409428126] [2023-11-19 07:33:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:16,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:33:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:33:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:33:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:33:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 07:33:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 07:33:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:33:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-19 07:33:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:33:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:33:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-19 07:33:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-19 07:33:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 07:33:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409428126] [2023-11-19 07:33:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409428126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:17,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:33:17,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019133885] [2023-11-19 07:33:17,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:17,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:33:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:17,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:33:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:17,240 INFO L87 Difference]: Start difference. First operand 490 states and 762 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-19 07:33:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:21,213 INFO L93 Difference]: Finished difference Result 1163 states and 1837 transitions. [2023-11-19 07:33:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:33:21,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 144 [2023-11-19 07:33:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:21,222 INFO L225 Difference]: With dead ends: 1163 [2023-11-19 07:33:21,222 INFO L226 Difference]: Without dead ends: 696 [2023-11-19 07:33:21,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:33:21,226 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1412 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 3607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:21,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1397 Invalid, 3607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [472 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-19 07:33:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-19 07:33:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 490. [2023-11-19 07:33:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 383 states have (on average 1.5613577023498695) internal successors, (598), 388 states have internal predecessors, (598), 80 states have call successors, (80), 25 states have call predecessors, (80), 26 states have return successors, (83), 76 states have call predecessors, (83), 77 states have call successors, (83) [2023-11-19 07:33:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 761 transitions. [2023-11-19 07:33:21,343 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 761 transitions. Word has length 144 [2023-11-19 07:33:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:21,345 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 761 transitions. [2023-11-19 07:33:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-19 07:33:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 761 transitions. [2023-11-19 07:33:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-19 07:33:21,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:21,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:21,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:21,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:21,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1240025766, now seen corresponding path program 1 times [2023-11-19 07:33:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:21,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016493588] [2023-11-19 07:33:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:33:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:33:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-19 07:33:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:33:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 07:33:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:33:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-19 07:33:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:33:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:33:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,697 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 07:33:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:21,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016493588] [2023-11-19 07:33:21,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016493588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:21,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:33:21,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224038377] [2023-11-19 07:33:21,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:33:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:33:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:21,702 INFO L87 Difference]: Start difference. First operand 490 states and 761 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 07:33:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:25,702 INFO L93 Difference]: Finished difference Result 1165 states and 1840 transitions. [2023-11-19 07:33:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:33:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 126 [2023-11-19 07:33:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:25,712 INFO L225 Difference]: With dead ends: 1165 [2023-11-19 07:33:25,712 INFO L226 Difference]: Without dead ends: 698 [2023-11-19 07:33:25,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:33:25,716 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1411 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:25,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1397 Invalid, 3614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [497 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 07:33:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-19 07:33:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 492. [2023-11-19 07:33:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.5598958333333333) internal successors, (599), 390 states have internal predecessors, (599), 80 states have call successors, (80), 25 states have call predecessors, (80), 27 states have return successors, (85), 76 states have call predecessors, (85), 77 states have call successors, (85) [2023-11-19 07:33:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 764 transitions. [2023-11-19 07:33:25,779 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 764 transitions. Word has length 126 [2023-11-19 07:33:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:25,780 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 764 transitions. [2023-11-19 07:33:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 07:33:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 764 transitions. [2023-11-19 07:33:25,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-19 07:33:25,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:25,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:25,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:33:25,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:25,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash 204817131, now seen corresponding path program 1 times [2023-11-19 07:33:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239405663] [2023-11-19 07:33:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:33:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:33:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:33:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:33:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:33:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:33:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:33:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:33:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:33:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-19 07:33:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-19 07:33:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 07:33:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239405663] [2023-11-19 07:33:26,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239405663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:26,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:26,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:33:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321235306] [2023-11-19 07:33:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:26,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:33:26,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:33:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:26,180 INFO L87 Difference]: Start difference. First operand 492 states and 764 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-19 07:33:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:29,559 INFO L93 Difference]: Finished difference Result 1165 states and 1839 transitions. [2023-11-19 07:33:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:33:29,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 146 [2023-11-19 07:33:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:29,566 INFO L225 Difference]: With dead ends: 1165 [2023-11-19 07:33:29,567 INFO L226 Difference]: Without dead ends: 698 [2023-11-19 07:33:29,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:33:29,571 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1401 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:29,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1397 Invalid, 3652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 07:33:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-19 07:33:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 492. [2023-11-19 07:33:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.5598958333333333) internal successors, (599), 390 states have internal predecessors, (599), 80 states have call successors, (80), 25 states have call predecessors, (80), 27 states have return successors, (85), 76 states have call predecessors, (85), 77 states have call successors, (85) [2023-11-19 07:33:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 764 transitions. [2023-11-19 07:33:29,629 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 764 transitions. Word has length 146 [2023-11-19 07:33:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:29,629 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 764 transitions. [2023-11-19 07:33:29,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-19 07:33:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 764 transitions. [2023-11-19 07:33:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-19 07:33:29,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:29,634 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:29,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:33:29,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:29,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1958799443, now seen corresponding path program 1 times [2023-11-19 07:33:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347832281] [2023-11-19 07:33:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:33:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:33:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:33:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:33:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:33:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:33:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:33:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:33:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:33:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-19 07:33:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-19 07:33:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 07:33:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347832281] [2023-11-19 07:33:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347832281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:33:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136046841] [2023-11-19 07:33:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:33:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:33:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:33:30,000 INFO L87 Difference]: Start difference. First operand 492 states and 764 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:33:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:34,569 INFO L93 Difference]: Finished difference Result 1163 states and 1834 transitions. [2023-11-19 07:33:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:33:34,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 146 [2023-11-19 07:33:34,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:34,577 INFO L225 Difference]: With dead ends: 1163 [2023-11-19 07:33:34,577 INFO L226 Difference]: Without dead ends: 698 [2023-11-19 07:33:34,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:33:34,582 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1419 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 5178 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 5661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 5178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:34,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1933 Invalid, 5661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [483 Valid, 5178 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-19 07:33:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-19 07:33:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 492. [2023-11-19 07:33:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.5598958333333333) internal successors, (599), 390 states have internal predecessors, (599), 80 states have call successors, (80), 25 states have call predecessors, (80), 27 states have return successors, (84), 76 states have call predecessors, (84), 77 states have call successors, (84) [2023-11-19 07:33:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 763 transitions. [2023-11-19 07:33:34,636 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 763 transitions. Word has length 146 [2023-11-19 07:33:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:34,637 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 763 transitions. [2023-11-19 07:33:34,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:33:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 763 transitions. [2023-11-19 07:33:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-19 07:33:34,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:34,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:33:34,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:34,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1052264181, now seen corresponding path program 2 times [2023-11-19 07:33:34,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205686149] [2023-11-19 07:33:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:34,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:33:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:33:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-19 07:33:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 07:33:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-19 07:33:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-19 07:33:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-19 07:33:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-19 07:33:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-19 07:33:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 07:33:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-19 07:33:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 07:33:34,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205686149] [2023-11-19 07:33:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205686149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:34,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:33:34,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093139330] [2023-11-19 07:33:34,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:34,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:33:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:33:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:33:34,963 INFO L87 Difference]: Start difference. First operand 492 states and 763 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:33:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:39,018 INFO L93 Difference]: Finished difference Result 1165 states and 1840 transitions. [2023-11-19 07:33:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:33:39,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2023-11-19 07:33:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:39,029 INFO L225 Difference]: With dead ends: 1165 [2023-11-19 07:33:39,030 INFO L226 Difference]: Without dead ends: 700 [2023-11-19 07:33:39,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:33:39,033 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1412 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 5239 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 5726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 5239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:39,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1932 Invalid, 5726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 5239 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 07:33:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-11-19 07:33:39,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 494. [2023-11-19 07:33:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 385 states have (on average 1.5584415584415585) internal successors, (600), 392 states have internal predecessors, (600), 80 states have call successors, (80), 25 states have call predecessors, (80), 28 states have return successors, (89), 76 states have call predecessors, (89), 77 states have call successors, (89) [2023-11-19 07:33:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 769 transitions. [2023-11-19 07:33:39,088 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 769 transitions. Word has length 147 [2023-11-19 07:33:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:39,089 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 769 transitions. [2023-11-19 07:33:39,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:33:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 769 transitions. [2023-11-19 07:33:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:33:39,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:39,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:33:39,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:39,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1820702430, now seen corresponding path program 1 times [2023-11-19 07:33:39,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:39,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232692490] [2023-11-19 07:33:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:39,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 07:33:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 07:33:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:33:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-19 07:33:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:33:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:33:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-19 07:33:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-19 07:33:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 07:33:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232692490] [2023-11-19 07:33:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232692490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168559185] [2023-11-19 07:33:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:39,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:39,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:39,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:33:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:33:39,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:33:39,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:33:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168559185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:39,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:33:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-19 07:33:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982885516] [2023-11-19 07:33:39,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:39,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:33:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:33:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:33:39,955 INFO L87 Difference]: Start difference. First operand 494 states and 769 transitions. Second operand has 15 states, 14 states have (on average 10.357142857142858) internal successors, (145), 11 states have internal predecessors, (145), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-19 07:33:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:45,230 INFO L93 Difference]: Finished difference Result 1630 states and 2677 transitions. [2023-11-19 07:33:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:33:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.357142857142858) internal successors, (145), 11 states have internal predecessors, (145), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 129 [2023-11-19 07:33:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:45,241 INFO L225 Difference]: With dead ends: 1630 [2023-11-19 07:33:45,241 INFO L226 Difference]: Without dead ends: 1167 [2023-11-19 07:33:45,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:33:45,245 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2690 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 6962 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 7865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 6962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:45,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 2304 Invalid, 7865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [903 Valid, 6962 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-19 07:33:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-11-19 07:33:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 937. [2023-11-19 07:33:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 749 states have (on average 1.610146862483311) internal successors, (1206), 756 states have internal predecessors, (1206), 159 states have call successors, (159), 25 states have call predecessors, (159), 28 states have return successors, (178), 155 states have call predecessors, (178), 156 states have call successors, (178) [2023-11-19 07:33:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1543 transitions. [2023-11-19 07:33:45,327 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1543 transitions. Word has length 129 [2023-11-19 07:33:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:45,327 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1543 transitions. [2023-11-19 07:33:45,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.357142857142858) internal successors, (145), 11 states have internal predecessors, (145), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-19 07:33:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1543 transitions. [2023-11-19 07:33:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:33:45,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:45,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:45,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:45,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1304d120-6e78-4809-81b7-69d7c337c6d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:45,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:45,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash -830101626, now seen corresponding path program 1 times [2023-11-19 07:33:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:45,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892992459] [2023-11-19 07:33:45,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:45,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:33:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-19 07:33:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:33:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:33:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-19 07:33:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:33:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:33:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-19 07:33:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:33:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892992459] [2023-11-19 07:33:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892992459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794862574] [2023-11-19 07:33:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:45,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:45,720 INFO L87 Difference]: Start difference. First operand 937 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:33:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:48,213 INFO L93 Difference]: Finished difference Result 2425 states and 4086 transitions. [2023-11-19 07:33:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:33:48,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2023-11-19 07:33:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:48,229 INFO L225 Difference]: With dead ends: 2425 [2023-11-19 07:33:48,229 INFO L226 Difference]: Without dead ends: 1566 [2023-11-19 07:33:48,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:33:48,235 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1531 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:48,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1056 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 07:33:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-19 07:33:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1352. [2023-11-19 07:33:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1085 states have (on average 1.6276497695852534) internal successors, (1766), 1092 states have internal predecessors, (1766), 238 states have call successors, (238), 25 states have call predecessors, (238), 28 states have return successors, (267), 234 states have call predecessors, (267), 235 states have call successors, (267) [2023-11-19 07:33:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2271 transitions. [2023-11-19 07:33:48,349 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2271 transitions. Word has length 132 [2023-11-19 07:33:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:48,350 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2271 transitions. [2023-11-19 07:33:48,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:33:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2271 transitions. [2023-11-19 07:33:48,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:33:48,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:48,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:33:48,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:48,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash 93471974, now seen corresponding path program 1 times [2023-11-19 07:33:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:48,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455234066] [2023-11-19 07:33:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:33:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:33:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:33:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:33:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:33:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 07:33:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-19 07:33:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-19 07:33:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:33:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-19 07:33:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:33:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:33:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455234066] [2023-11-19 07:33:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455234066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:48,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:48,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119588598] [2023-11-19 07:33:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:48,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:48,520 INFO L87 Difference]: Start difference. First operand 1352 states and 2271 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)