./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl --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 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:20,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:20,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:09:20,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:20,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:20,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:20,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:20,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:20,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:20,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:20,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:20,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:20,136 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:20,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:20,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:09:20,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:20,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:20,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:20,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:20,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:09:20,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:20,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:09:20,143 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:20,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:09:20,144 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:20,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:20,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:20,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:20,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:20,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:20,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:20,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:09:20,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:20,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:20,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:20,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:09:20,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:20,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:20,152 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:20,153 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_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2023-11-12 02:09:20,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:20,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:20,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:20,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:20,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:20,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2023-11-12 02:09:23,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:24,175 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:24,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2023-11-12 02:09:24,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/data/2d15978cb/c73e3fe381f54c9a84cb480c738822ac/FLAG427a76aeb [2023-11-12 02:09:24,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/data/2d15978cb/c73e3fe381f54c9a84cb480c738822ac [2023-11-12 02:09:24,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:24,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:24,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:24,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:24,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:24,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:24" (1/1) ... [2023-11-12 02:09:24,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a89c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:24, skipping insertion in model container [2023-11-12 02:09:24,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:24" (1/1) ... [2023-11-12 02:09:24,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:24,574 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_b7260da1-416a-4f6c-8971-48ee0ca15244/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2023-11-12 02:09:25,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:25,037 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:25,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-11-12 02:09:25,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [208] [2023-11-12 02:09:25,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [270] [2023-11-12 02:09:25,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [279] [2023-11-12 02:09:25,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [645] [2023-11-12 02:09:25,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1724] [2023-11-12 02:09:25,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2007] [2023-11-12 02:09:25,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2409] [2023-11-12 02:09:25,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2622] [2023-11-12 02:09:25,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2639] [2023-11-12 02:09:25,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2674] [2023-11-12 02:09:25,080 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_b7260da1-416a-4f6c-8971-48ee0ca15244/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2023-11-12 02:09:25,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:25,252 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:25,260 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:25,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25 WrapperNode [2023-11-12 02:09:25,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:25,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:25,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:25,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:25,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,360 INFO L138 Inliner]: procedures = 129, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 894 [2023-11-12 02:09:25,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:25,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:25,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:25,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:25,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,380 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:25,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:25,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:25,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:25,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:25,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:25,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-12 02:09:25,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-12 02:09:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-12 02:09:25,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-12 02:09:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-12 02:09:25,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-12 02:09:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-12 02:09:25,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-12 02:09:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-12 02:09:25,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-12 02:09:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-12 02:09:25,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-12 02:09:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-12 02:09:25,624 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-12 02:09:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-12 02:09:25,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-12 02:09:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-12 02:09:25,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-12 02:09:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-12 02:09:25,626 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-12 02:09:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-12 02:09:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-12 02:09:25,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-12 02:09:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-12 02:09:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-12 02:09:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-12 02:09:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-12 02:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-12 02:09:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-12 02:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-12 02:09:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-12 02:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 02:09:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 02:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-12 02:09:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-12 02:09:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-12 02:09:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-12 02:09:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-12 02:09:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-12 02:09:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-12 02:09:25,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-12 02:09:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-12 02:09:25,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-12 02:09:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-12 02:09:25,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-12 02:09:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-12 02:09:25,632 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-12 02:09:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:25,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:25,869 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:25,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:26,762 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:26,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:26,786 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:09:26,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:26 BoogieIcfgContainer [2023-11-12 02:09:26,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:26,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:26,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:26,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:26,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:24" (1/3) ... [2023-11-12 02:09:26,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef2c970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:26, skipping insertion in model container [2023-11-12 02:09:26,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (2/3) ... [2023-11-12 02:09:26,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef2c970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:26, skipping insertion in model container [2023-11-12 02:09:26,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:26" (3/3) ... [2023-11-12 02:09:26,804 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2023-11-12 02:09:26,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:26,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:09:26,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:26,963 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;@684bf9af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:26,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:09:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 02:09:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-12 02:09:26,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:26,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:26,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:27,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2126435666, now seen corresponding path program 1 times [2023-11-12 02:09:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:27,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159244364] [2023-11-12 02:09:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:09:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:09:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:09:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:09:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:09:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-12 02:09:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-12 02:09:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:09:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-12 02:09:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:09:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-12 02:09:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-12 02:09:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-12 02:09:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 02:09:28,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:28,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159244364] [2023-11-12 02:09:28,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159244364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:28,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005201673] [2023-11-12 02:09:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:28,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:28,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:28,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:09:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:09:28,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-12 02:09:28,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:28,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005201673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:28,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:28,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-11-12 02:09:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592027751] [2023-11-12 02:09:28,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:28,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:09:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:09:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:28,628 INFO L87 Difference]: Start difference. First operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:28,718 INFO L93 Difference]: Finished difference Result 526 states and 764 transitions. [2023-11-12 02:09:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:09:28,720 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2023-11-12 02:09:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:28,738 INFO L225 Difference]: With dead ends: 526 [2023-11-12 02:09:28,738 INFO L226 Difference]: Without dead ends: 330 [2023-11-12 02:09:28,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:28,748 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:28,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-12 02:09:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-11-12 02:09:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.507936507936508) internal successors, (380), 256 states have internal predecessors, (380), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-12 02:09:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 487 transitions. [2023-11-12 02:09:28,831 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 487 transitions. Word has length 127 [2023-11-12 02:09:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:28,833 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 487 transitions. [2023-11-12 02:09:28,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 487 transitions. [2023-11-12 02:09:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-12 02:09:28,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:28,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:28,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:09:29,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:09:29,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:29,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2060039681, now seen corresponding path program 1 times [2023-11-12 02:09:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:29,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855525356] [2023-11-12 02:09:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:09:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:09:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:09:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:09:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:09:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:09:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:09:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:09:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-12 02:09:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-12 02:09:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:09:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-12 02:09:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-12 02:09:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 02:09:29,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:29,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855525356] [2023-11-12 02:09:29,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855525356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:29,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785092010] [2023-11-12 02:09:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:29,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:29,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:29,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:09:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:09:29,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-12 02:09:29,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785092010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:29,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:29,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-12 02:09:29,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605030824] [2023-11-12 02:09:29,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:29,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:29,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:29,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:29,965 INFO L87 Difference]: Start difference. First operand 330 states and 487 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:30,013 INFO L93 Difference]: Finished difference Result 515 states and 741 transitions. [2023-11-12 02:09:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:30,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-11-12 02:09:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:30,023 INFO L225 Difference]: With dead ends: 515 [2023-11-12 02:09:30,023 INFO L226 Difference]: Without dead ends: 333 [2023-11-12 02:09:30,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:30,030 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:30,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-12 02:09:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2023-11-12 02:09:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 258 states have internal predecessors, (382), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-12 02:09:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 489 transitions. [2023-11-12 02:09:30,063 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 489 transitions. Word has length 128 [2023-11-12 02:09:30,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:30,064 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 489 transitions. [2023-11-12 02:09:30,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 489 transitions. [2023-11-12 02:09:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:09:30,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:30,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:30,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:30,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:30,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:30,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash 803166024, now seen corresponding path program 1 times [2023-11-12 02:09:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:30,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547537104] [2023-11-12 02:09:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:09:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:09:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:09:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:09:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:09:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:09:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:09:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-12 02:09:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:09:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:09:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:09:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-12 02:09:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-12 02:09:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-12 02:09:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:30,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547537104] [2023-11-12 02:09:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547537104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:30,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054286810] [2023-11-12 02:09:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:30,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:30,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:30,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:30,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:09:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:30,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:09:30,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-12 02:09:31,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:31,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054286810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:31,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:31,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-12 02:09:31,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019099423] [2023-11-12 02:09:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:31,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:31,024 INFO L87 Difference]: Start difference. First operand 332 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:31,078 INFO L93 Difference]: Finished difference Result 689 states and 1029 transitions. [2023-11-12 02:09:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:31,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2023-11-12 02:09:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:31,084 INFO L225 Difference]: With dead ends: 689 [2023-11-12 02:09:31,084 INFO L226 Difference]: Without dead ends: 384 [2023-11-12 02:09:31,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:31,088 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 99 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 939 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 [2023-11-12 02:09:31,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 939 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-12 02:09:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 376. [2023-11-12 02:09:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 287 states have (on average 1.519163763066202) internal successors, (436), 291 states have internal predecessors, (436), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-12 02:09:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 565 transitions. [2023-11-12 02:09:31,121 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 565 transitions. Word has length 134 [2023-11-12 02:09:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:31,122 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 565 transitions. [2023-11-12 02:09:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 565 transitions. [2023-11-12 02:09:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 02:09:31,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:31,127 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:31,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:31,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 02:09:31,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:31,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1022630467, now seen corresponding path program 1 times [2023-11-12 02:09:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208587854] [2023-11-12 02:09:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:09:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:09:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:09:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:09:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-12 02:09:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-12 02:09:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:09:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-12 02:09:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-12 02:09:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:09:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:09:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-12 02:09:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:09:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-12 02:09:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208587854] [2023-11-12 02:09:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208587854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788679743] [2023-11-12 02:09:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:31,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:31,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:31,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:31,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:09:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:31,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:09:31,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:09:32,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788679743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:32,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:32,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-12 02:09:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706217914] [2023-11-12 02:09:32,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:09:32,083 INFO L87 Difference]: Start difference. First operand 376 states and 565 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:32,168 INFO L93 Difference]: Finished difference Result 743 states and 1120 transitions. [2023-11-12 02:09:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2023-11-12 02:09:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:32,172 INFO L225 Difference]: With dead ends: 743 [2023-11-12 02:09:32,172 INFO L226 Difference]: Without dead ends: 378 [2023-11-12 02:09:32,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:09:32,175 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 8 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1901 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 [2023-11-12 02:09:32,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1901 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-12 02:09:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-11-12 02:09:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 288 states have (on average 1.5173611111111112) internal successors, (437), 293 states have internal predecessors, (437), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2023-11-12 02:09:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 568 transitions. [2023-11-12 02:09:32,199 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 568 transitions. Word has length 135 [2023-11-12 02:09:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:32,199 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 568 transitions. [2023-11-12 02:09:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 568 transitions. [2023-11-12 02:09:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-12 02:09:32,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:32,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:32,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:32,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:32,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2063647029, now seen corresponding path program 1 times [2023-11-12 02:09:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:32,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63979278] [2023-11-12 02:09:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:32,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-12 02:09:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-12 02:09:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:09:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:09:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:09:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:09:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-12 02:09:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-12 02:09:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-12 02:09:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-12 02:09:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:09:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:09:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 02:09:32,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:32,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63979278] [2023-11-12 02:09:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63979278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:32,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925663386] [2023-11-12 02:09:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:32,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:32,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:32,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:09:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:09:33,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:09:33,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:33,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925663386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:33,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:33,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-12 02:09:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504442840] [2023-11-12 02:09:33,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:09:33,142 INFO L87 Difference]: Start difference. First operand 378 states and 568 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:33,227 INFO L93 Difference]: Finished difference Result 745 states and 1125 transitions. [2023-11-12 02:09:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 136 [2023-11-12 02:09:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:33,231 INFO L225 Difference]: With dead ends: 745 [2023-11-12 02:09:33,231 INFO L226 Difference]: Without dead ends: 380 [2023-11-12 02:09:33,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:09:33,234 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 8 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:33,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1887 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-12 02:09:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-12 02:09:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.5155709342560553) internal successors, (438), 295 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2023-11-12 02:09:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 574 transitions. [2023-11-12 02:09:33,256 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 574 transitions. Word has length 136 [2023-11-12 02:09:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:33,257 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 574 transitions. [2023-11-12 02:09:33,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 574 transitions. [2023-11-12 02:09:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-12 02:09:33,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:33,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:33,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:33,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:33,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1671129868, now seen corresponding path program 1 times [2023-11-12 02:09:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036696207] [2023-11-12 02:09:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:09:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:09:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:09:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:09:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:09:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:09:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:09:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-12 02:09:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-12 02:09:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-12 02:09:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-12 02:09:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-12 02:09:33,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:33,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036696207] [2023-11-12 02:09:33,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036696207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:09:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667253297] [2023-11-12 02:09:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:33,783 INFO L87 Difference]: Start difference. First operand 380 states and 574 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:36,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:36,029 INFO L93 Difference]: Finished difference Result 816 states and 1240 transitions. [2023-11-12 02:09:36,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:09:36,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2023-11-12 02:09:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:36,034 INFO L225 Difference]: With dead ends: 816 [2023-11-12 02:09:36,035 INFO L226 Difference]: Without dead ends: 459 [2023-11-12 02:09:36,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:09:36,038 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 791 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:36,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 921 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:09:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-12 02:09:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 380. [2023-11-12 02:09:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.5155709342560553) internal successors, (438), 295 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2023-11-12 02:09:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 573 transitions. [2023-11-12 02:09:36,094 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 573 transitions. Word has length 137 [2023-11-12 02:09:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:36,095 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 573 transitions. [2023-11-12 02:09:36,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 573 transitions. [2023-11-12 02:09:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 02:09:36,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:36,099 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:36,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:09:36,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:36,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash -937480124, now seen corresponding path program 2 times [2023-11-12 02:09:36,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:36,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670818235] [2023-11-12 02:09:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:36,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:09:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:09:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:09:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-12 02:09:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:09:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-12 02:09:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-12 02:09:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-12 02:09:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-12 02:09:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-12 02:09:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-12 02:09:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-12 02:09:36,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:36,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670818235] [2023-11-12 02:09:36,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670818235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:36,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:36,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:09:36,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069910832] [2023-11-12 02:09:36,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:36,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:36,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:36,479 INFO L87 Difference]: Start difference. First operand 380 states and 573 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:38,460 INFO L93 Difference]: Finished difference Result 818 states and 1243 transitions. [2023-11-12 02:09:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:09:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2023-11-12 02:09:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:38,465 INFO L225 Difference]: With dead ends: 818 [2023-11-12 02:09:38,465 INFO L226 Difference]: Without dead ends: 461 [2023-11-12 02:09:38,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:09:38,468 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 787 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:38,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 921 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:09:38,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-12 02:09:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2023-11-12 02:09:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2023-11-12 02:09:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 576 transitions. [2023-11-12 02:09:38,515 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 576 transitions. Word has length 138 [2023-11-12 02:09:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:38,515 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 576 transitions. [2023-11-12 02:09:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 576 transitions. [2023-11-12 02:09:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:09:38,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:38,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:38,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:09:38,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:38,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash -343602757, now seen corresponding path program 1 times [2023-11-12 02:09:38,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906633958] [2023-11-12 02:09:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:38,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:09:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-12 02:09:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:09:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:09:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-12 02:09:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:09:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-12 02:09:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:09:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-12 02:09:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-12 02:09:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-12 02:09:38,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:38,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906633958] [2023-11-12 02:09:38,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906633958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:38,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:09:38,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133610435] [2023-11-12 02:09:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:38,843 INFO L87 Difference]: Start difference. First operand 382 states and 576 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:40,785 INFO L93 Difference]: Finished difference Result 818 states and 1242 transitions. [2023-11-12 02:09:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:09:40,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2023-11-12 02:09:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:40,790 INFO L225 Difference]: With dead ends: 818 [2023-11-12 02:09:40,790 INFO L226 Difference]: Without dead ends: 461 [2023-11-12 02:09:40,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:09:40,794 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 789 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:40,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 921 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:09:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-12 02:09:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2023-11-12 02:09:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2023-11-12 02:09:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 576 transitions. [2023-11-12 02:09:40,837 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 576 transitions. Word has length 139 [2023-11-12 02:09:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:40,837 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 576 transitions. [2023-11-12 02:09:40,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 02:09:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 576 transitions. [2023-11-12 02:09:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:09:40,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:40,841 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:40,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:09:40,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:40,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1689791289, now seen corresponding path program 1 times [2023-11-12 02:09:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266215704] [2023-11-12 02:09:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:09:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-12 02:09:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:09:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:09:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-12 02:09:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:09:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-12 02:09:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:09:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-12 02:09:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-12 02:09:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 02:09:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266215704] [2023-11-12 02:09:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266215704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:41,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:41,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:09:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444696056] [2023-11-12 02:09:41,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:09:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:09:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:09:41,132 INFO L87 Difference]: Start difference. First operand 382 states and 576 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 02:09:43,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:43,823 INFO L93 Difference]: Finished difference Result 816 states and 1237 transitions. [2023-11-12 02:09:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:09:43,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 139 [2023-11-12 02:09:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:43,827 INFO L225 Difference]: With dead ends: 816 [2023-11-12 02:09:43,827 INFO L226 Difference]: Without dead ends: 461 [2023-11-12 02:09:43,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:09:43,830 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 796 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:43,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1318 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 02:09:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-12 02:09:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2023-11-12 02:09:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2023-11-12 02:09:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 575 transitions. [2023-11-12 02:09:43,869 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 575 transitions. Word has length 139 [2023-11-12 02:09:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:43,870 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 575 transitions. [2023-11-12 02:09:43,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 02:09:43,871 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 575 transitions. [2023-11-12 02:09:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:09:43,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:43,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:43,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:09:43,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:43,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1067374004, now seen corresponding path program 2 times [2023-11-12 02:09:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:43,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069183992] [2023-11-12 02:09:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:09:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:09:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:09:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-12 02:09:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:09:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-12 02:09:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:09:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:09:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-12 02:09:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-12 02:09:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 02:09:44,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:44,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069183992] [2023-11-12 02:09:44,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069183992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:44,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:09:44,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947193691] [2023-11-12 02:09:44,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:44,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:09:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:09:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:09:44,169 INFO L87 Difference]: Start difference. First operand 382 states and 575 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 02:09:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:47,003 INFO L93 Difference]: Finished difference Result 818 states and 1243 transitions. [2023-11-12 02:09:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:09:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2023-11-12 02:09:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:47,008 INFO L225 Difference]: With dead ends: 818 [2023-11-12 02:09:47,008 INFO L226 Difference]: Without dead ends: 463 [2023-11-12 02:09:47,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:09:47,011 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 792 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 3757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:47,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1318 Invalid, 3757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 02:09:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-12 02:09:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 384. [2023-11-12 02:09:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 291 states have (on average 1.5120274914089347) internal successors, (440), 299 states have internal predecessors, (440), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2023-11-12 02:09:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 581 transitions. [2023-11-12 02:09:47,092 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 581 transitions. Word has length 140 [2023-11-12 02:09:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:47,092 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 581 transitions. [2023-11-12 02:09:47,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 02:09:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 581 transitions. [2023-11-12 02:09:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-12 02:09:47,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:47,096 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:47,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:09:47,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:47,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:47,110 INFO L85 PathProgramCache]: Analyzing trace with hash -932441698, now seen corresponding path program 1 times [2023-11-12 02:09:47,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:47,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45524495] [2023-11-12 02:09:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-12 02:09:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-12 02:09:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:09:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-12 02:09:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-12 02:09:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:09:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:09:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-12 02:09:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:09:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-12 02:09:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:47,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45524495] [2023-11-12 02:09:47,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45524495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558290981] [2023-11-12 02:09:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:47,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:47,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:47,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:09:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:47,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:09:47,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:47,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558290981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:47,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:09:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-11-12 02:09:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467825387] [2023-11-12 02:09:47,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:09:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:09:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:47,807 INFO L87 Difference]: Start difference. First operand 384 states and 581 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-12 02:09:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:49,728 INFO L93 Difference]: Finished difference Result 972 states and 1541 transitions. [2023-11-12 02:09:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:09:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2023-11-12 02:09:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:49,736 INFO L225 Difference]: With dead ends: 972 [2023-11-12 02:09:49,736 INFO L226 Difference]: Without dead ends: 790 [2023-11-12 02:09:49,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:09:49,738 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1162 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:49,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1091 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:09:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-12 02:09:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 687. [2023-11-12 02:09:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 530 states have (on average 1.5811320754716982) internal successors, (838), 538 states have internal predecessors, (838), 130 states have call successors, (130), 23 states have call predecessors, (130), 26 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2023-11-12 02:09:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1117 transitions. [2023-11-12 02:09:49,796 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1117 transitions. Word has length 141 [2023-11-12 02:09:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:49,796 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1117 transitions. [2023-11-12 02:09:49,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-12 02:09:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1117 transitions. [2023-11-12 02:09:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 02:09:49,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:49,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:49,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7260da1-416a-4f6c-8971-48ee0ca15244/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:09:50,010 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash 735109243, now seen corresponding path program 1 times [2023-11-12 02:09:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977705267] [2023-11-12 02:09:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:09:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:09:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-12 02:09:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-12 02:09:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:09:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:09:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-12 02:09:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-12 02:09:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-12 02:09:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-12 02:09:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:50,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:50,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977705267] [2023-11-12 02:09:50,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977705267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:50,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611745623] [2023-11-12 02:09:50,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:50,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:50,211 INFO L87 Difference]: Start difference. First operand 687 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:51,724 INFO L93 Difference]: Finished difference Result 1693 states and 2820 transitions. [2023-11-12 02:09:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2023-11-12 02:09:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:51,735 INFO L225 Difference]: With dead ends: 1693 [2023-11-12 02:09:51,735 INFO L226 Difference]: Without dead ends: 1074 [2023-11-12 02:09:51,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:51,739 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 878 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:51,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 674 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:09:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-11-12 02:09:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 987. [2023-11-12 02:09:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 766 states have (on average 1.5966057441253263) internal successors, (1223), 774 states have internal predecessors, (1223), 194 states have call successors, (194), 23 states have call predecessors, (194), 26 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2023-11-12 02:09:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1640 transitions. [2023-11-12 02:09:51,827 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1640 transitions. Word has length 147 [2023-11-12 02:09:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:51,827 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1640 transitions. [2023-11-12 02:09:51,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1640 transitions. [2023-11-12 02:09:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-12 02:09:51,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:51,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:09:51,839 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:51,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash -101522995, now seen corresponding path program 1 times [2023-11-12 02:09:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841273190] [2023-11-12 02:09:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:51,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:09:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:09:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:09:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:09:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:09:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:09:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-12 02:09:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-12 02:09:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-12 02:09:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-12 02:09:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841273190] [2023-11-12 02:09:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841273190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025006940] [2023-11-12 02:09:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:51,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:51,995 INFO L87 Difference]: Start difference. First operand 987 states and 1640 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:53,506 INFO L93 Difference]: Finished difference Result 2408 states and 4065 transitions. [2023-11-12 02:09:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2023-11-12 02:09:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:53,518 INFO L225 Difference]: With dead ends: 2408 [2023-11-12 02:09:53,519 INFO L226 Difference]: Without dead ends: 1542 [2023-11-12 02:09:53,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:53,524 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 876 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:53,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 653 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:09:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2023-11-12 02:09:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1455. [2023-11-12 02:09:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1139 states have (on average 1.6066725197541702) internal successors, (1830), 1147 states have internal predecessors, (1830), 289 states have call successors, (289), 23 states have call predecessors, (289), 26 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2023-11-12 02:09:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2437 transitions. [2023-11-12 02:09:53,628 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2437 transitions. Word has length 148 [2023-11-12 02:09:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:53,628 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2437 transitions. [2023-11-12 02:09:53,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2437 transitions. [2023-11-12 02:09:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-12 02:09:53,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:53,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:53,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:09:53,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:53,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1202814691, now seen corresponding path program 1 times [2023-11-12 02:09:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:53,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325753466] [2023-11-12 02:09:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:09:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:09:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:09:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-12 02:09:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-12 02:09:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-12 02:09:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-12 02:09:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-12 02:09:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-12 02:09:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-12 02:09:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:53,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325753466] [2023-11-12 02:09:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325753466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:53,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:53,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:53,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185448826] [2023-11-12 02:09:53,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:53,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:53,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:53,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:53,777 INFO L87 Difference]: Start difference. First operand 1455 states and 2437 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:55,248 INFO L93 Difference]: Finished difference Result 3455 states and 5906 transitions. [2023-11-12 02:09:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2023-11-12 02:09:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:55,268 INFO L225 Difference]: With dead ends: 3455 [2023-11-12 02:09:55,268 INFO L226 Difference]: Without dead ends: 2246 [2023-11-12 02:09:55,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:55,275 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 874 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:55,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 646 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:09:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2023-11-12 02:09:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2159. [2023-11-12 02:09:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 1720 states have (on average 1.6145348837209301) internal successors, (2777), 1728 states have internal predecessors, (2777), 412 states have call successors, (412), 23 states have call predecessors, (412), 26 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2023-11-12 02:09:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3646 transitions. [2023-11-12 02:09:55,420 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3646 transitions. Word has length 149 [2023-11-12 02:09:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:55,421 INFO L495 AbstractCegarLoop]: Abstraction has 2159 states and 3646 transitions. [2023-11-12 02:09:55,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3646 transitions. [2023-11-12 02:09:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-12 02:09:55,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:55,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:09:55,439 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:55,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1263670958, now seen corresponding path program 1 times [2023-11-12 02:09:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:55,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933168284] [2023-11-12 02:09:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-12 02:09:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:09:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-12 02:09:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-12 02:09:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-12 02:09:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-12 02:09:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-12 02:09:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:09:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-12 02:09:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-12 02:09:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:55,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:55,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933168284] [2023-11-12 02:09:55,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933168284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:55,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:55,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648767609] [2023-11-12 02:09:55,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:55,641 INFO L87 Difference]: Start difference. First operand 2159 states and 3646 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:57,148 INFO L93 Difference]: Finished difference Result 5074 states and 8760 transitions. [2023-11-12 02:09:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:57,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2023-11-12 02:09:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:57,204 INFO L225 Difference]: With dead ends: 5074 [2023-11-12 02:09:57,205 INFO L226 Difference]: Without dead ends: 3365 [2023-11-12 02:09:57,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:57,214 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 872 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:57,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 645 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:09:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2023-11-12 02:09:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3278. [2023-11-12 02:09:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 2660 states have (on average 1.6195488721804512) internal successors, (4308), 2668 states have internal predecessors, (4308), 591 states have call successors, (591), 23 states have call predecessors, (591), 26 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2023-11-12 02:09:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5561 transitions. [2023-11-12 02:09:57,457 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5561 transitions. Word has length 150 [2023-11-12 02:09:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:57,457 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5561 transitions. [2023-11-12 02:09:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5561 transitions. [2023-11-12 02:09:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-12 02:09:57,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:57,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:57,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:09:57,481 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:57,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -801884583, now seen corresponding path program 1 times [2023-11-12 02:09:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:57,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301526903] [2023-11-12 02:09:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:57,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:09:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:09:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-12 02:09:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:09:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-12 02:09:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-12 02:09:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:09:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:09:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-12 02:09:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-12 02:09:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:57,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:57,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301526903] [2023-11-12 02:09:57,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301526903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:57,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:57,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497496190] [2023-11-12 02:09:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:57,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:57,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:57,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:57,619 INFO L87 Difference]: Start difference. First operand 3278 states and 5561 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:59,134 INFO L93 Difference]: Finished difference Result 7992 states and 13859 transitions. [2023-11-12 02:09:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:59,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2023-11-12 02:09:59,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:59,182 INFO L225 Difference]: With dead ends: 7992 [2023-11-12 02:09:59,182 INFO L226 Difference]: Without dead ends: 5396 [2023-11-12 02:09:59,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:59,194 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 870 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:59,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 686 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:09:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2023-11-12 02:09:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 5309. [2023-11-12 02:09:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 4315 states have (on average 1.6129779837775202) internal successors, (6960), 4323 states have internal predecessors, (6960), 967 states have call successors, (967), 23 states have call predecessors, (967), 26 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2023-11-12 02:09:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 9009 transitions. [2023-11-12 02:09:59,601 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 9009 transitions. Word has length 151 [2023-11-12 02:09:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:59,602 INFO L495 AbstractCegarLoop]: Abstraction has 5309 states and 9009 transitions. [2023-11-12 02:09:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:09:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 9009 transitions. [2023-11-12 02:09:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-12 02:09:59,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:59,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:59,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:09:59,641 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:59,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1972882062, now seen corresponding path program 1 times [2023-11-12 02:09:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:59,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462642761] [2023-11-12 02:09:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:59,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:09:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:09:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:09:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:09:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:09:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:09:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-12 02:09:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:09:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-12 02:09:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-12 02:09:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-12 02:09:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:09:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-12 02:09:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-12 02:09:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-12 02:09:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:09:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:09:59,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:59,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462642761] [2023-11-12 02:09:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462642761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:59,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:59,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385191289] [2023-11-12 02:09:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:59,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:59,843 INFO L87 Difference]: Start difference. First operand 5309 states and 9009 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:10:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:01,391 INFO L93 Difference]: Finished difference Result 13134 states and 22768 transitions. [2023-11-12 02:10:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:10:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2023-11-12 02:10:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:01,456 INFO L225 Difference]: With dead ends: 13134 [2023-11-12 02:10:01,457 INFO L226 Difference]: Without dead ends: 8884 [2023-11-12 02:10:01,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:10:01,475 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 868 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:01,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 647 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:10:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8884 states. [2023-11-12 02:10:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8884 to 8797. [2023-11-12 02:10:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8797 states, 7197 states have (on average 1.6109490065304988) internal successors, (11594), 7205 states have internal predecessors, (11594), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 26 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2023-11-12 02:10:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 14933 transitions. [2023-11-12 02:10:02,057 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 14933 transitions. Word has length 152 [2023-11-12 02:10:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:02,058 INFO L495 AbstractCegarLoop]: Abstraction has 8797 states and 14933 transitions. [2023-11-12 02:10:02,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:10:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 14933 transitions. [2023-11-12 02:10:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-12 02:10:02,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:02,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:02,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:10:02,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:02,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash 241176795, now seen corresponding path program 1 times [2023-11-12 02:10:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898044062] [2023-11-12 02:10:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:10:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:10:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:10:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:10:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:10:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:10:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-12 02:10:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-12 02:10:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:10:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:10:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-12 02:10:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-12 02:10:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-12 02:10:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-12 02:10:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:10:02,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898044062] [2023-11-12 02:10:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898044062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:02,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:02,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:10:02,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389017508] [2023-11-12 02:10:02,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:02,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:02,329 INFO L87 Difference]: Start difference. First operand 8797 states and 14933 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:10:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:04,151 INFO L93 Difference]: Finished difference Result 22793 states and 39474 transitions. [2023-11-12 02:10:04,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:10:04,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2023-11-12 02:10:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:04,226 INFO L225 Difference]: With dead ends: 22793 [2023-11-12 02:10:04,226 INFO L226 Difference]: Without dead ends: 15477 [2023-11-12 02:10:04,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:10:04,257 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 866 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:04,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 671 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:10:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15477 states. [2023-11-12 02:10:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15477 to 15390. [2023-11-12 02:10:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15390 states, 12587 states have (on average 1.6016524986096767) internal successors, (20160), 12595 states have internal predecessors, (20160), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 26 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2023-11-12 02:10:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15390 states to 15390 states and 26049 transitions. [2023-11-12 02:10:05,309 INFO L78 Accepts]: Start accepts. Automaton has 15390 states and 26049 transitions. Word has length 153 [2023-11-12 02:10:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:05,310 INFO L495 AbstractCegarLoop]: Abstraction has 15390 states and 26049 transitions. [2023-11-12 02:10:05,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:10:05,313 INFO L276 IsEmpty]: Start isEmpty. Operand 15390 states and 26049 transitions. [2023-11-12 02:10:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-12 02:10:05,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:05,384 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:05,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:10:05,384 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:05,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1906410995, now seen corresponding path program 1 times [2023-11-12 02:10:05,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:05,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085572333] [2023-11-12 02:10:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:10:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-12 02:10:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:10:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-12 02:10:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-12 02:10:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-12 02:10:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:10:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:10:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:10:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-12 02:10:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-12 02:10:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-12 02:10:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-12 02:10:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-12 02:10:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-12 02:10:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085572333] [2023-11-12 02:10:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085572333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:05,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:05,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:10:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258056065] [2023-11-12 02:10:05,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:05,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:05,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:05,538 INFO L87 Difference]: Start difference. First operand 15390 states and 26049 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)