./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme --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 21774f07edc6bb728cb664e1a2361d7b986cd58290bb234c442a42ac18f35f10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:42,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:42,118 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:46:42,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:42,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:42,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:42,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:42,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:42,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:42,156 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:42,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:42,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:42,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:42,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:42,159 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:42,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:42,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:42,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:42,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:42,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:42,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:42,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:42,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:42,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:42,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:42,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:42,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:42,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:42,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:42,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:42,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:42,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:42,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:42,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:42,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:42,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:42,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:42,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:42,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:42,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:42,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:42,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:42,198 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_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21774f07edc6bb728cb664e1a2361d7b986cd58290bb234c442a42ac18f35f10 [2023-11-26 10:46:42,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:42,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:42,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:42,561 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:42,562 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:42,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c [2023-11-26 10:46:45,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:46,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:46,126 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c [2023-11-26 10:46:46,158 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/data/2abe3e7fd/076f99d64ec2421884cbc316442e7fe3/FLAGb504d25ad [2023-11-26 10:46:46,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/data/2abe3e7fd/076f99d64ec2421884cbc316442e7fe3 [2023-11-26 10:46:46,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:46,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:46,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:46,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:46,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:46,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:46" (1/1) ... [2023-11-26 10:46:46,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acd4628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:46, skipping insertion in model container [2023-11-26 10:46:46,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:46" (1/1) ... [2023-11-26 10:46:46,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:47,027 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_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c[64121,64134] [2023-11-26 10:46:47,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:47,048 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:47,060 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-26 10:46:47,062 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [351] [2023-11-26 10:46:47,062 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [694] [2023-11-26 10:46:47,062 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [833] [2023-11-26 10:46:47,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [1199] [2023-11-26 10:46:47,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1246] [2023-11-26 10:46:47,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1263] [2023-11-26 10:46:47,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1476] [2023-11-26 10:46:47,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1511] [2023-11-26 10:46:47,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1908] [2023-11-26 10:46:47,065 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2977] [2023-11-26 10:46:47,223 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_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c[64121,64134] [2023-11-26 10:46:47,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:47,260 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:46:47,269 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:47,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47 WrapperNode [2023-11-26 10:46:47,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:47,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:47,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:47,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:47,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,376 INFO L138 Inliner]: procedures = 129, calls = 215, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 901 [2023-11-26 10:46:47,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:47,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:47,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:47,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:47,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,429 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-26 10:46:47,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:47,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:47,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:47,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:47,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (1/1) ... [2023-11-26 10:46:47,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:47,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:47,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-26 10:46:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-26 10:46:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-26 10:46:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-26 10:46:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-26 10:46:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-26 10:46:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-26 10:46:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-26 10:46:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-26 10:46:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-26 10:46:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-26 10:46:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-26 10:46:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-26 10:46:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-26 10:46:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-26 10:46:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-26 10:46:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-26 10:46:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-26 10:46:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-26 10:46:47,613 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-26 10:46:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-26 10:46:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-26 10:46:47,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-26 10:46:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-26 10:46:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-26 10:46:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-26 10:46:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-26 10:46:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-26 10:46:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-26 10:46:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-26 10:46:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-26 10:46:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-26 10:46:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-26 10:46:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-26 10:46:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-26 10:46:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-26 10:46:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-26 10:46:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-26 10:46:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-26 10:46:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-26 10:46:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-26 10:46:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-26 10:46:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-26 10:46:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:46:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:46:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:46:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-26 10:46:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-26 10:46:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:47,862 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:47,865 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:48,825 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:48,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:48,926 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:46:48,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:48 BoogieIcfgContainer [2023-11-26 10:46:48,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:48,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:48,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:48,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:48,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:46" (1/3) ... [2023-11-26 10:46:48,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41108c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:48, skipping insertion in model container [2023-11-26 10:46:48,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:47" (2/3) ... [2023-11-26 10:46:48,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41108c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:48, skipping insertion in model container [2023-11-26 10:46:48,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:48" (3/3) ... [2023-11-26 10:46:48,937 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product28.cil.c [2023-11-26 10:46:48,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:48,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:46:49,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:49,031 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;@45cae1b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:49,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:46:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 231 states have (on average 1.5714285714285714) internal successors, (363), 235 states have internal predecessors, (363), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-26 10:46:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 10:46:49,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:49,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:49,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:49,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:49,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1214777307, now seen corresponding path program 1 times [2023-11-26 10:46:49,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313690238] [2023-11-26 10:46:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:49,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:46:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:46:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:46:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:46:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:46:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:46:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:46:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:46:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:46:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:46:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:46:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313690238] [2023-11-26 10:46:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313690238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699991361] [2023-11-26 10:46:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:50,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:50,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:50,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:50,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:46:50,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:46:50,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:50,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699991361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:50,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-11-26 10:46:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214449602] [2023-11-26 10:46:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:50,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:46:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:46:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:50,570 INFO L87 Difference]: Start difference. First operand has 307 states, 231 states have (on average 1.5714285714285714) internal successors, (363), 235 states have internal predecessors, (363), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:46:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:50,664 INFO L93 Difference]: Finished difference Result 473 states and 704 transitions. [2023-11-26 10:46:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:46:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 116 [2023-11-26 10:46:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:50,700 INFO L225 Difference]: With dead ends: 473 [2023-11-26 10:46:50,710 INFO L226 Difference]: Without dead ends: 304 [2023-11-26 10:46:50,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:50,721 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:50,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-26 10:46:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-26 10:46:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 229 states have (on average 1.554585152838428) internal successors, (356), 232 states have internal predecessors, (356), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-26 10:46:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 459 transitions. [2023-11-26 10:46:50,795 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 459 transitions. Word has length 116 [2023-11-26 10:46:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:50,797 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 459 transitions. [2023-11-26 10:46:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:46:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 459 transitions. [2023-11-26 10:46:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-26 10:46:50,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:50,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:50,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:46:51,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:46:51,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:51,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash 467763784, now seen corresponding path program 1 times [2023-11-26 10:46:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771495851] [2023-11-26 10:46:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:51,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 10:46:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:46:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:46:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:46:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:46:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:46:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:46:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:46:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:46:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:46:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:46:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771495851] [2023-11-26 10:46:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771495851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044607512] [2023-11-26 10:46:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:51,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:51,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:51,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:46:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:46:51,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:46:51,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044607512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:51,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:51,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-26 10:46:51,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235184079] [2023-11-26 10:46:51,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:51,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:51,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:51,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:51,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:51,888 INFO L87 Difference]: Start difference. First operand 304 states and 459 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:46:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:51,954 INFO L93 Difference]: Finished difference Result 469 states and 691 transitions. [2023-11-26 10:46:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2023-11-26 10:46:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:51,967 INFO L225 Difference]: With dead ends: 469 [2023-11-26 10:46:51,968 INFO L226 Difference]: Without dead ends: 306 [2023-11-26 10:46:51,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:51,973 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:51,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 897 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-26 10:46:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-11-26 10:46:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 231 states have (on average 1.5497835497835497) internal successors, (358), 234 states have internal predecessors, (358), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-26 10:46:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 461 transitions. [2023-11-26 10:46:52,025 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 461 transitions. Word has length 117 [2023-11-26 10:46:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:52,031 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 461 transitions. [2023-11-26 10:46:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:46:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 461 transitions. [2023-11-26 10:46:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 10:46:52,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:52,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:52,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:52,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:52,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:52,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 38593327, now seen corresponding path program 1 times [2023-11-26 10:46:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971976620] [2023-11-26 10:46:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:46:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:46:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:46:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:46:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:46:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:46:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:46:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:46:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:46:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:46:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-26 10:46:52,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:52,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971976620] [2023-11-26 10:46:52,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971976620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106488119] [2023-11-26 10:46:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:52,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:52,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:52,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:46:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:46:52,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:46:53,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:53,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106488119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:53,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:53,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-26 10:46:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059832367] [2023-11-26 10:46:53,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:53,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:53,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:53,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:53,032 INFO L87 Difference]: Start difference. First operand 306 states and 461 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:46:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:53,130 INFO L93 Difference]: Finished difference Result 638 states and 974 transitions. [2023-11-26 10:46:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:53,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2023-11-26 10:46:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:53,135 INFO L225 Difference]: With dead ends: 638 [2023-11-26 10:46:53,135 INFO L226 Difference]: Without dead ends: 354 [2023-11-26 10:46:53,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:53,138 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 95 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:53,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:53,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-26 10:46:53,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 349. [2023-11-26 10:46:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 263 states have (on average 1.5627376425855513) internal successors, (411), 266 states have internal predecessors, (411), 63 states have call successors, (63), 22 states have call predecessors, (63), 22 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 10:46:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2023-11-26 10:46:53,176 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 122 [2023-11-26 10:46:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:53,177 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2023-11-26 10:46:53,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:46:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2023-11-26 10:46:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-26 10:46:53,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:53,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:53,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:53,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:53,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:53,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1600090268, now seen corresponding path program 1 times [2023-11-26 10:46:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:53,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904169148] [2023-11-26 10:46:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:46:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 10:46:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:46:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:46:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:46:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:46:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:46:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:46:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:46:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:46:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-26 10:46:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904169148] [2023-11-26 10:46:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904169148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387391514] [2023-11-26 10:46:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:53,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:53,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:53,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:46:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:46:54,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:46:54,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387391514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-26 10:46:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105245986] [2023-11-26 10:46:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:46:54,164 INFO L87 Difference]: Start difference. First operand 349 states and 536 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:46:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:54,278 INFO L93 Difference]: Finished difference Result 693 states and 1066 transitions. [2023-11-26 10:46:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:54,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-11-26 10:46:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:54,283 INFO L225 Difference]: With dead ends: 693 [2023-11-26 10:46:54,283 INFO L226 Difference]: Without dead ends: 351 [2023-11-26 10:46:54,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:54,286 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 8 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:54,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1749 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:46:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-26 10:46:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-11-26 10:46:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 264 states have (on average 1.5606060606060606) internal successors, (412), 268 states have internal predecessors, (412), 63 states have call successors, (63), 22 states have call predecessors, (63), 23 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2023-11-26 10:46:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 539 transitions. [2023-11-26 10:46:54,312 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 539 transitions. Word has length 123 [2023-11-26 10:46:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:54,313 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 539 transitions. [2023-11-26 10:46:54,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:46:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 539 transitions. [2023-11-26 10:46:54,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-26 10:46:54,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:54,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:54,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:54,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:54,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:54,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash -827392255, now seen corresponding path program 1 times [2023-11-26 10:46:54,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:54,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58578654] [2023-11-26 10:46:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:54,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:46:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:46:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:46:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:46:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:46:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:46:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:46:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:46:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:46:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:46:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:46:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-26 10:46:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:46:54,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:54,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58578654] [2023-11-26 10:46:54,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58578654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:54,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336059289] [2023-11-26 10:46:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:54,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:54,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:46:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:46:55,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:46:55,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336059289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:55,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:55,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-26 10:46:55,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112302568] [2023-11-26 10:46:55,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:55,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:46:55,267 INFO L87 Difference]: Start difference. First operand 351 states and 539 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:46:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:55,382 INFO L93 Difference]: Finished difference Result 695 states and 1071 transitions. [2023-11-26 10:46:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 124 [2023-11-26 10:46:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:55,386 INFO L225 Difference]: With dead ends: 695 [2023-11-26 10:46:55,386 INFO L226 Difference]: Without dead ends: 353 [2023-11-26 10:46:55,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:46:55,389 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 8 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:55,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1735 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:46:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-26 10:46:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2023-11-26 10:46:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 265 states have (on average 1.558490566037736) internal successors, (413), 270 states have internal predecessors, (413), 63 states have call successors, (63), 22 states have call predecessors, (63), 24 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2023-11-26 10:46:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 545 transitions. [2023-11-26 10:46:55,420 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 545 transitions. Word has length 124 [2023-11-26 10:46:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:55,420 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 545 transitions. [2023-11-26 10:46:55,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:46:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 545 transitions. [2023-11-26 10:46:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-26 10:46:55,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:55,424 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:55,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:55,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:55,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 957599854, now seen corresponding path program 1 times [2023-11-26 10:46:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608154729] [2023-11-26 10:46:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 10:46:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:46:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:46:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:46:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:46:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:46:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:46:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:46:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:46:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:46:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 10:46:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-26 10:46:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608154729] [2023-11-26 10:46:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608154729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:46:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022193576] [2023-11-26 10:46:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:55,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:55,962 INFO L87 Difference]: Start difference. First operand 353 states and 545 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:46:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:58,044 INFO L93 Difference]: Finished difference Result 753 states and 1170 transitions. [2023-11-26 10:46:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2023-11-26 10:46:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:58,049 INFO L225 Difference]: With dead ends: 753 [2023-11-26 10:46:58,050 INFO L226 Difference]: Without dead ends: 419 [2023-11-26 10:46:58,051 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 [2023-11-26 10:46:58,052 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 749 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:58,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 812 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:46:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-26 10:46:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 353. [2023-11-26 10:46:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 265 states have (on average 1.558490566037736) internal successors, (413), 270 states have internal predecessors, (413), 63 states have call successors, (63), 22 states have call predecessors, (63), 24 states have return successors, (68), 62 states have call predecessors, (68), 62 states have call successors, (68) [2023-11-26 10:46:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 544 transitions. [2023-11-26 10:46:58,095 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 544 transitions. Word has length 125 [2023-11-26 10:46:58,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:58,096 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 544 transitions. [2023-11-26 10:46:58,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:46:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 544 transitions. [2023-11-26 10:46:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-26 10:46:58,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:58,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:58,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:46:58,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:58,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1198686159, now seen corresponding path program 2 times [2023-11-26 10:46:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554139721] [2023-11-26 10:46:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:46:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:46:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:46:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:46:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:46:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:46:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:46:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:46:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 10:46:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:46:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-26 10:46:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-26 10:46:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554139721] [2023-11-26 10:46:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554139721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:58,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:46:58,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234955802] [2023-11-26 10:46:58,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:58,368 INFO L87 Difference]: Start difference. First operand 353 states and 544 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:47:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:00,399 INFO L93 Difference]: Finished difference Result 755 states and 1173 transitions. [2023-11-26 10:47:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:47:00,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2023-11-26 10:47:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:00,406 INFO L225 Difference]: With dead ends: 755 [2023-11-26 10:47:00,406 INFO L226 Difference]: Without dead ends: 421 [2023-11-26 10:47:00,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:47:00,409 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 745 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:00,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 812 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:47:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-11-26 10:47:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 355. [2023-11-26 10:47:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 266 states have (on average 1.556390977443609) internal successors, (414), 272 states have internal predecessors, (414), 63 states have call successors, (63), 22 states have call predecessors, (63), 25 states have return successors, (70), 62 states have call predecessors, (70), 62 states have call successors, (70) [2023-11-26 10:47:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 547 transitions. [2023-11-26 10:47:00,471 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 547 transitions. Word has length 126 [2023-11-26 10:47:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:00,471 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 547 transitions. [2023-11-26 10:47:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 10:47:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 547 transitions. [2023-11-26 10:47:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-26 10:47:00,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:00,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:00,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:47:00,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:00,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash -240580077, now seen corresponding path program 1 times [2023-11-26 10:47:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676486833] [2023-11-26 10:47:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:47:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:47:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:47:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:47:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:47:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 10:47:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:47:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:47:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:47:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 10:47:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:47:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676486833] [2023-11-26 10:47:00,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676486833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:00,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:47:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205228905] [2023-11-26 10:47:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:47:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:47:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:47:00,832 INFO L87 Difference]: Start difference. First operand 355 states and 547 transitions. Second operand has 11 states, 10 states have (on average 7.9) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-26 10:47:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:03,595 INFO L93 Difference]: Finished difference Result 753 states and 1168 transitions. [2023-11-26 10:47:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:47:03,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2023-11-26 10:47:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:03,600 INFO L225 Difference]: With dead ends: 753 [2023-11-26 10:47:03,600 INFO L226 Difference]: Without dead ends: 421 [2023-11-26 10:47:03,602 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 [2023-11-26 10:47:03,603 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 754 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:03,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1163 Invalid, 3527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 10:47:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-11-26 10:47:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 355. [2023-11-26 10:47:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 266 states have (on average 1.556390977443609) internal successors, (414), 272 states have internal predecessors, (414), 63 states have call successors, (63), 22 states have call predecessors, (63), 25 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2023-11-26 10:47:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 546 transitions. [2023-11-26 10:47:03,639 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 546 transitions. Word has length 127 [2023-11-26 10:47:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:03,640 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 546 transitions. [2023-11-26 10:47:03,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-26 10:47:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 546 transitions. [2023-11-26 10:47:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-26 10:47:03,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:03,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:47:03,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:03,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1009782554, now seen corresponding path program 2 times [2023-11-26 10:47:03,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856492060] [2023-11-26 10:47:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 10:47:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:47:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:47:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:47:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:47:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:47:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:47:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:47:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:47:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:47:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:47:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856492060] [2023-11-26 10:47:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856492060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:03,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:47:03,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174601718] [2023-11-26 10:47:03,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:03,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:47:03,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:03,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:47:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:47:03,963 INFO L87 Difference]: Start difference. First operand 355 states and 546 transitions. Second operand has 11 states, 10 states have (on average 8.0) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-26 10:47:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:06,609 INFO L93 Difference]: Finished difference Result 755 states and 1174 transitions. [2023-11-26 10:47:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:47:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.0) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 128 [2023-11-26 10:47:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:06,614 INFO L225 Difference]: With dead ends: 755 [2023-11-26 10:47:06,614 INFO L226 Difference]: Without dead ends: 423 [2023-11-26 10:47:06,616 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 [2023-11-26 10:47:06,617 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 750 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:06,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1163 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 10:47:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-26 10:47:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 357. [2023-11-26 10:47:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 267 states have (on average 1.554307116104869) internal successors, (415), 274 states have internal predecessors, (415), 63 states have call successors, (63), 22 states have call predecessors, (63), 26 states have return successors, (74), 62 states have call predecessors, (74), 62 states have call successors, (74) [2023-11-26 10:47:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 552 transitions. [2023-11-26 10:47:06,659 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 552 transitions. Word has length 128 [2023-11-26 10:47:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:06,659 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 552 transitions. [2023-11-26 10:47:06,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.0) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-26 10:47:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 552 transitions. [2023-11-26 10:47:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-26 10:47:06,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:06,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:06,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:47:06,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:06,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash -810515464, now seen corresponding path program 1 times [2023-11-26 10:47:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544548292] [2023-11-26 10:47:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:47:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:47:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:47:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:47:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:47:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:47:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:47:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:47:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:47:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:47:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:06,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:06,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544548292] [2023-11-26 10:47:06,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544548292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:06,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434978013] [2023-11-26 10:47:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:06,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:06,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:06,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:06,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:47:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:07,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:47:07,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:07,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:07,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434978013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:07,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:07,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-11-26 10:47:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100323270] [2023-11-26 10:47:07,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:07,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:47:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:47:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:47:07,358 INFO L87 Difference]: Start difference. First operand 357 states and 552 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 10:47:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:09,488 INFO L93 Difference]: Finished difference Result 896 states and 1459 transitions. [2023-11-26 10:47:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:47:09,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 129 [2023-11-26 10:47:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:09,496 INFO L225 Difference]: With dead ends: 896 [2023-11-26 10:47:09,496 INFO L226 Difference]: Without dead ends: 733 [2023-11-26 10:47:09,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:47:09,499 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1104 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:09,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1167 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-26 10:47:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-11-26 10:47:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 652. [2023-11-26 10:47:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 498 states have (on average 1.6164658634538152) internal successors, (805), 505 states have internal predecessors, (805), 127 states have call successors, (127), 22 states have call predecessors, (127), 26 states have return successors, (148), 126 states have call predecessors, (148), 126 states have call successors, (148) [2023-11-26 10:47:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1080 transitions. [2023-11-26 10:47:09,559 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1080 transitions. Word has length 129 [2023-11-26 10:47:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:09,560 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1080 transitions. [2023-11-26 10:47:09,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 10:47:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1080 transitions. [2023-11-26 10:47:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-26 10:47:09,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:09,567 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:09,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 10:47:09,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543ba4ad-b9a9-4cf9-b7d2-e4ee5c1c2421/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:47:09,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:09,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1231985941, now seen corresponding path program 1 times [2023-11-26 10:47:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:09,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638728717] [2023-11-26 10:47:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:09,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:47:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:47:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:47:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:47:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:47:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:47:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:47:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:47:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:47:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:47:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638728717] [2023-11-26 10:47:09,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638728717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:09,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905439234] [2023-11-26 10:47:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:09,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:09,964 INFO L87 Difference]: Start difference. First operand 652 states and 1080 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:11,590 INFO L93 Difference]: Finished difference Result 1607 states and 2728 transitions. [2023-11-26 10:47:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:11,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2023-11-26 10:47:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:11,599 INFO L225 Difference]: With dead ends: 1607 [2023-11-26 10:47:11,600 INFO L226 Difference]: Without dead ends: 1015 [2023-11-26 10:47:11,603 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 [2023-11-26 10:47:11,604 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 832 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:11,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 598 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 10:47:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-11-26 10:47:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 944. [2023-11-26 10:47:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 726 states have (on average 1.628099173553719) internal successors, (1182), 733 states have internal predecessors, (1182), 191 states have call successors, (191), 22 states have call predecessors, (191), 26 states have return successors, (222), 190 states have call predecessors, (222), 190 states have call successors, (222) [2023-11-26 10:47:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1595 transitions. [2023-11-26 10:47:11,674 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1595 transitions. Word has length 135 [2023-11-26 10:47:11,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:11,675 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1595 transitions. [2023-11-26 10:47:11,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:11,675 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1595 transitions. [2023-11-26 10:47:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-26 10:47:11,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:11,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:47:11,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:11,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash -687446125, now seen corresponding path program 1 times [2023-11-26 10:47:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:11,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057800507] [2023-11-26 10:47:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:47:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:47:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:47:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:47:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:47:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:47:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:47:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-26 10:47:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:47:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:47:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:11,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057800507] [2023-11-26 10:47:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057800507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049643572] [2023-11-26 10:47:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:11,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:11,841 INFO L87 Difference]: Start difference. First operand 944 states and 1595 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:13,267 INFO L93 Difference]: Finished difference Result 2304 states and 3955 transitions. [2023-11-26 10:47:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2023-11-26 10:47:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:13,280 INFO L225 Difference]: With dead ends: 2304 [2023-11-26 10:47:13,280 INFO L226 Difference]: Without dead ends: 1470 [2023-11-26 10:47:13,285 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 [2023-11-26 10:47:13,286 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 830 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:13,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 580 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:47:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-26 10:47:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1399. [2023-11-26 10:47:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1086 states have (on average 1.6353591160220995) internal successors, (1776), 1093 states have internal predecessors, (1776), 286 states have call successors, (286), 22 states have call predecessors, (286), 26 states have return successors, (317), 285 states have call predecessors, (317), 285 states have call successors, (317) [2023-11-26 10:47:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2379 transitions. [2023-11-26 10:47:13,373 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2379 transitions. Word has length 136 [2023-11-26 10:47:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:13,374 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 2379 transitions. [2023-11-26 10:47:13,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2379 transitions. [2023-11-26 10:47:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-26 10:47:13,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:13,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:13,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:47:13,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:13,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1141789879, now seen corresponding path program 1 times [2023-11-26 10:47:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:13,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596874997] [2023-11-26 10:47:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:13,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:47:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:47:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:47:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:47:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:47:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:47:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:47:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 10:47:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-26 10:47:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:47:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:13,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596874997] [2023-11-26 10:47:13,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596874997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:13,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:13,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:13,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62536971] [2023-11-26 10:47:13,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:13,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:13,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:13,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:13,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:13,525 INFO L87 Difference]: Start difference. First operand 1399 states and 2379 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:14,973 INFO L93 Difference]: Finished difference Result 3322 states and 5767 transitions. [2023-11-26 10:47:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:14,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2023-11-26 10:47:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:14,993 INFO L225 Difference]: With dead ends: 3322 [2023-11-26 10:47:14,993 INFO L226 Difference]: Without dead ends: 2153 [2023-11-26 10:47:15,000 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 [2023-11-26 10:47:15,001 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 828 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:15,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 570 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:47:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-11-26 10:47:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2082. [2023-11-26 10:47:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1646 states have (on average 1.6415552855407047) internal successors, (2702), 1653 states have internal predecessors, (2702), 409 states have call successors, (409), 22 states have call predecessors, (409), 26 states have return successors, (456), 408 states have call predecessors, (456), 408 states have call successors, (456) [2023-11-26 10:47:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3567 transitions. [2023-11-26 10:47:15,167 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3567 transitions. Word has length 137 [2023-11-26 10:47:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:15,167 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 3567 transitions. [2023-11-26 10:47:15,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3567 transitions. [2023-11-26 10:47:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-26 10:47:15,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:15,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:47:15,186 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:15,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -143305804, now seen corresponding path program 1 times [2023-11-26 10:47:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612672784] [2023-11-26 10:47:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:47:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:47:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:47:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:47:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:47:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:47:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:47:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-26 10:47:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-26 10:47:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-26 10:47:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612672784] [2023-11-26 10:47:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612672784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:15,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:15,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174551384] [2023-11-26 10:47:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:15,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:15,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:15,354 INFO L87 Difference]: Start difference. First operand 2082 states and 3567 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:16,877 INFO L93 Difference]: Finished difference Result 4892 states and 8572 transitions. [2023-11-26 10:47:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:16,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2023-11-26 10:47:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:16,914 INFO L225 Difference]: With dead ends: 4892 [2023-11-26 10:47:16,914 INFO L226 Difference]: Without dead ends: 3237 [2023-11-26 10:47:16,925 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 [2023-11-26 10:47:16,926 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 826 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:16,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 570 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:47:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2023-11-26 10:47:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3166. [2023-11-26 10:47:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 2551 states have (on average 1.6456291650333204) internal successors, (4198), 2558 states have internal predecessors, (4198), 588 states have call successors, (588), 22 states have call predecessors, (588), 26 states have return successors, (661), 587 states have call predecessors, (661), 587 states have call successors, (661) [2023-11-26 10:47:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 5447 transitions. [2023-11-26 10:47:17,208 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 5447 transitions. Word has length 138 [2023-11-26 10:47:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:17,209 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 5447 transitions. [2023-11-26 10:47:17,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 5447 transitions. [2023-11-26 10:47:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 10:47:17,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:17,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:17,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:47:17,239 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1355236237, now seen corresponding path program 1 times [2023-11-26 10:47:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841925298] [2023-11-26 10:47:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:17,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:47:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:47:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:47:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:47:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:47:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 10:47:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:47:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 10:47:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 10:47:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-26 10:47:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:17,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841925298] [2023-11-26 10:47:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841925298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:17,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:17,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004121407] [2023-11-26 10:47:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:17,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:17,421 INFO L87 Difference]: Start difference. First operand 3166 states and 5447 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:18,978 INFO L93 Difference]: Finished difference Result 7723 states and 13584 transitions. [2023-11-26 10:47:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2023-11-26 10:47:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:19,021 INFO L225 Difference]: With dead ends: 7723 [2023-11-26 10:47:19,021 INFO L226 Difference]: Without dead ends: 5207 [2023-11-26 10:47:19,032 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 [2023-11-26 10:47:19,033 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 824 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:19,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 603 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:47:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2023-11-26 10:47:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5136. [2023-11-26 10:47:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5136 states, 4145 states have (on average 1.6378769601930037) internal successors, (6789), 4152 states have internal predecessors, (6789), 964 states have call successors, (964), 22 states have call predecessors, (964), 26 states have return successors, (1081), 963 states have call predecessors, (1081), 963 states have call successors, (1081) [2023-11-26 10:47:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 8834 transitions. [2023-11-26 10:47:19,403 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 8834 transitions. Word has length 139 [2023-11-26 10:47:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:19,404 INFO L495 AbstractCegarLoop]: Abstraction has 5136 states and 8834 transitions. [2023-11-26 10:47:19,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 8834 transitions. [2023-11-26 10:47:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 10:47:19,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:19,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:19,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:47:19,439 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:19,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 5795832, now seen corresponding path program 1 times [2023-11-26 10:47:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811434573] [2023-11-26 10:47:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:47:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:47:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:47:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:47:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:47:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:47:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:47:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:47:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 10:47:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-26 10:47:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811434573] [2023-11-26 10:47:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811434573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:19,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:19,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:19,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210453667] [2023-11-26 10:47:19,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:19,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:19,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:19,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:19,641 INFO L87 Difference]: Start difference. First operand 5136 states and 8834 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:21,294 INFO L93 Difference]: Finished difference Result 12704 states and 22332 transitions. [2023-11-26 10:47:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2023-11-26 10:47:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:21,358 INFO L225 Difference]: With dead ends: 12704 [2023-11-26 10:47:21,358 INFO L226 Difference]: Without dead ends: 8584 [2023-11-26 10:47:21,374 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 [2023-11-26 10:47:21,375 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 822 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:21,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 575 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:47:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8584 states. [2023-11-26 10:47:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8584 to 8513. [2023-11-26 10:47:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8513 states, 6916 states have (on average 1.6356275303643724) internal successors, (11312), 6923 states have internal predecessors, (11312), 1570 states have call successors, (1570), 22 states have call predecessors, (1570), 26 states have return successors, (1765), 1569 states have call predecessors, (1765), 1569 states have call successors, (1765) [2023-11-26 10:47:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8513 states to 8513 states and 14647 transitions. [2023-11-26 10:47:21,974 INFO L78 Accepts]: Start accepts. Automaton has 8513 states and 14647 transitions. Word has length 140 [2023-11-26 10:47:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:21,974 INFO L495 AbstractCegarLoop]: Abstraction has 8513 states and 14647 transitions. [2023-11-26 10:47:21,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 8513 states and 14647 transitions. [2023-11-26 10:47:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 10:47:22,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:22,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:47:22,033 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:22,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 460903925, now seen corresponding path program 1 times [2023-11-26 10:47:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466111595] [2023-11-26 10:47:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:47:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:47:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:47:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:47:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:47:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:47:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:47:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:47:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:47:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 10:47:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466111595] [2023-11-26 10:47:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466111595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:22,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:22,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047076368] [2023-11-26 10:47:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:22,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:22,194 INFO L87 Difference]: Start difference. First operand 8513 states and 14647 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:23,879 INFO L93 Difference]: Finished difference Result 22056 states and 38731 transitions. [2023-11-26 10:47:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:23,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2023-11-26 10:47:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:23,947 INFO L225 Difference]: With dead ends: 22056 [2023-11-26 10:47:23,948 INFO L226 Difference]: Without dead ends: 14968 [2023-11-26 10:47:23,976 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 [2023-11-26 10:47:23,976 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 820 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:23,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 595 Invalid, 1353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [286 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:47:23,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14968 states. [2023-11-26 10:47:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14968 to 14897. [2023-11-26 10:47:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14897 states, 12097 states have (on average 1.6259403157807721) internal successors, (19669), 12104 states have internal predecessors, (19669), 2773 states have call successors, (2773), 22 states have call predecessors, (2773), 26 states have return successors, (3112), 2772 states have call predecessors, (3112), 2772 states have call successors, (3112) [2023-11-26 10:47:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14897 states to 14897 states and 25554 transitions. [2023-11-26 10:47:24,931 INFO L78 Accepts]: Start accepts. Automaton has 14897 states and 25554 transitions. Word has length 141 [2023-11-26 10:47:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:24,931 INFO L495 AbstractCegarLoop]: Abstraction has 14897 states and 25554 transitions. [2023-11-26 10:47:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 14897 states and 25554 transitions. [2023-11-26 10:47:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:47:24,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:24,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:24,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:47:24,989 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1009086393, now seen corresponding path program 1 times [2023-11-26 10:47:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049518567] [2023-11-26 10:47:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:47:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:47:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:47:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:47:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:47:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:47:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:47:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:47:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:47:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 10:47:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 10:47:25,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:25,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049518567] [2023-11-26 10:47:25,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049518567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:25,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:25,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240345511] [2023-11-26 10:47:25,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:25,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:25,156 INFO L87 Difference]: Start difference. First operand 14897 states and 25554 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, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:27,586 INFO L93 Difference]: Finished difference Result 39415 states and 69117 transitions. [2023-11-26 10:47:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:27,594 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, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2023-11-26 10:47:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:27,726 INFO L225 Difference]: With dead ends: 39415 [2023-11-26 10:47:27,726 INFO L226 Difference]: Without dead ends: 26535 [2023-11-26 10:47:27,766 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 [2023-11-26 10:47:27,768 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 818 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:27,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 571 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:47:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26535 states. [2023-11-26 10:47:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26535 to 26464. [2023-11-26 10:47:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26464 states, 21625 states have (on average 1.6219190751445087) internal successors, (35074), 21632 states have internal predecessors, (35074), 4812 states have call successors, (4812), 22 states have call predecessors, (4812), 26 states have return successors, (5425), 4811 states have call predecessors, (5425), 4811 states have call successors, (5425) [2023-11-26 10:47:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26464 states to 26464 states and 45311 transitions. [2023-11-26 10:47:29,177 INFO L78 Accepts]: Start accepts. Automaton has 26464 states and 45311 transitions. Word has length 142 [2023-11-26 10:47:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:29,178 INFO L495 AbstractCegarLoop]: Abstraction has 26464 states and 45311 transitions. [2023-11-26 10:47:29,178 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, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:47:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 26464 states and 45311 transitions. [2023-11-26 10:47:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-26 10:47:29,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:29,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:29,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:47:29,246 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:29,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash 806258647, now seen corresponding path program 1 times [2023-11-26 10:47:29,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668442076] [2023-11-26 10:47:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:47:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat