./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 51fa488e776e831bac86701b44da2398387b953b2cee791cda39a1547c039fcd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:27,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:27,712 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:44:27,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:27,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:27,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:27,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:27,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:27,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:27,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:27,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:27,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:27,750 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:27,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:27,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:27,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:27,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:27,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:27,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:27,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:27,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:27,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:27,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:27,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:27,757 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:27,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:27,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:27,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:27,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:27,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:27,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:27,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:27,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:27,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:27,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:27,762 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:27,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:27,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:27,763 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:27,764 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_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51fa488e776e831bac86701b44da2398387b953b2cee791cda39a1547c039fcd [2023-11-06 22:44:28,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:28,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:28,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:28,204 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:28,205 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:28,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c [2023-11-06 22:44:31,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:31,873 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:31,874 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c [2023-11-06 22:44:31,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/data/71c3b2d2d/493a0d0680504433a16ded8dd9902393/FLAG1a3a0230a [2023-11-06 22:44:31,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/data/71c3b2d2d/493a0d0680504433a16ded8dd9902393 [2023-11-06 22:44:31,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:31,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:31,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:31,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:31,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:31,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:31" (1/1) ... [2023-11-06 22:44:31,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ce0d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31, skipping insertion in model container [2023-11-06 22:44:31,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:31" (1/1) ... [2023-11-06 22:44:32,050 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:32,570 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_07219f35-3742-4c8a-8412-e047ab018b38/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c[16887,16900] [2023-11-06 22:44:32,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:32,891 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:32,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-06 22:44:32,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [375] [2023-11-06 22:44:32,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [741] [2023-11-06 22:44:32,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [750] [2023-11-06 22:44:32,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1821] [2023-11-06 22:44:32,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1856] [2023-11-06 22:44:32,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1963] [2023-11-06 22:44:32,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2367] [2023-11-06 22:44:32,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2384] [2023-11-06 22:44:32,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2403] [2023-11-06 22:44:32,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2622] [2023-11-06 22:44:32,972 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_07219f35-3742-4c8a-8412-e047ab018b38/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c[16887,16900] [2023-11-06 22:44:33,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:33,117 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:33,125 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:33,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33 WrapperNode [2023-11-06 22:44:33,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:33,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:33,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:33,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:33,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,253 INFO L138 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1060 [2023-11-06 22:44:33,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:33,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:33,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:33,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:33,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:33,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:33,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:33,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:33,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (1/1) ... [2023-11-06 22:44:33,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:33,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:33,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-06 22:44:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-06 22:44:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-06 22:44:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-06 22:44:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-06 22:44:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-06 22:44:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-06 22:44:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-06 22:44:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-06 22:44:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-06 22:44:33,534 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-06 22:44:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-06 22:44:33,535 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-06 22:44:33,535 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-06 22:44:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-06 22:44:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-06 22:44:33,536 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-06 22:44:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-06 22:44:33,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-06 22:44:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-06 22:44:33,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-06 22:44:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-06 22:44:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-06 22:44:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-06 22:44:33,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-06 22:44:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-06 22:44:33,540 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-06 22:44:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-06 22:44:33,541 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-06 22:44:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-06 22:44:33,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-06 22:44:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-06 22:44:33,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-06 22:44:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-06 22:44:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-06 22:44:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:33,799 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:33,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:34,799 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:34,810 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:34,810 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:44:34,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:34 BoogieIcfgContainer [2023-11-06 22:44:34,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:34,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:34,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:34,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:34,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:31" (1/3) ... [2023-11-06 22:44:34,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e59965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:34, skipping insertion in model container [2023-11-06 22:44:34,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:33" (2/3) ... [2023-11-06 22:44:34,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e59965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:34, skipping insertion in model container [2023-11-06 22:44:34,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:34" (3/3) ... [2023-11-06 22:44:34,827 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product24.cil.c [2023-11-06 22:44:34,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:34,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:44:34,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:34,938 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=LoopsAndPotentialCycles, 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;@309d5244, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:34,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:44:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:44:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-06 22:44:34,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:34,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:34,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:34,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1690099201, now seen corresponding path program 1 times [2023-11-06 22:44:35,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:35,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664612979] [2023-11-06 22:44:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:35,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:44:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:44:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:44:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 22:44:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:44:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:44:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:44:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 22:44:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-06 22:44:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664612979] [2023-11-06 22:44:36,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664612979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:36,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848497025] [2023-11-06 22:44:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:36,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:36,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:36,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:44:36,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 22:44:36,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848497025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:36,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-06 22:44:36,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302740295] [2023-11-06 22:44:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:36,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:44:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:44:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:36,730 INFO L87 Difference]: Start difference. First operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:44:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:36,821 INFO L93 Difference]: Finished difference Result 481 states and 712 transitions. [2023-11-06 22:44:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:36,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-11-06 22:44:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:36,842 INFO L225 Difference]: With dead ends: 481 [2023-11-06 22:44:36,842 INFO L226 Difference]: Without dead ends: 313 [2023-11-06 22:44:36,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:36,854 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:36,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-06 22:44:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-11-06 22:44:36,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 250 states have internal predecessors, (380), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2023-11-06 22:44:36,965 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 98 [2023-11-06 22:44:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:36,967 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2023-11-06 22:44:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:44:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2023-11-06 22:44:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 22:44:36,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:36,974 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:36,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:37,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:37,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:37,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2990504, now seen corresponding path program 1 times [2023-11-06 22:44:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103706594] [2023-11-06 22:44:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:37,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:44:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:44:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:44:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:44:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:44:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:44:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 22:44:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:44:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-06 22:44:37,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103706594] [2023-11-06 22:44:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103706594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056258361] [2023-11-06 22:44:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:37,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:37,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:38,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 22:44:38,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056258361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:38,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-06 22:44:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510777395] [2023-11-06 22:44:38,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:38,137 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:44:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:38,209 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2023-11-06 22:44:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-11-06 22:44:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:38,222 INFO L225 Difference]: With dead ends: 471 [2023-11-06 22:44:38,222 INFO L226 Difference]: Without dead ends: 316 [2023-11-06 22:44:38,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:38,231 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:38,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-06 22:44:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2023-11-06 22:44:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 252 states have internal predecessors, (382), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2023-11-06 22:44:38,290 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 99 [2023-11-06 22:44:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:38,292 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2023-11-06 22:44:38,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:44:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2023-11-06 22:44:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:44:38,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:38,302 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:38,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:38,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -223135106, now seen corresponding path program 1 times [2023-11-06 22:44:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010814787] [2023-11-06 22:44:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:44:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:44:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 22:44:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:44:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 22:44:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 22:44:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 22:44:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:44:38,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010814787] [2023-11-06 22:44:38,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010814787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:38,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574131143] [2023-11-06 22:44:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:38,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:38,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:39,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 22:44:39,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:39,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574131143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:39,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-06 22:44:39,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18685969] [2023-11-06 22:44:39,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:39,318 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:44:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:39,368 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2023-11-06 22:44:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:39,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-11-06 22:44:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:39,374 INFO L225 Difference]: With dead ends: 665 [2023-11-06 22:44:39,374 INFO L226 Difference]: Without dead ends: 377 [2023-11-06 22:44:39,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:39,378 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 115 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:39,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 898 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-06 22:44:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2023-11-06 22:44:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 295 states have internal predecessors, (452), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-06 22:44:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 565 transitions. [2023-11-06 22:44:39,421 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 565 transitions. Word has length 108 [2023-11-06 22:44:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:39,422 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 565 transitions. [2023-11-06 22:44:39,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:44:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 565 transitions. [2023-11-06 22:44:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 22:44:39,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:39,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:39,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:39,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:39,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2129020549, now seen corresponding path program 1 times [2023-11-06 22:44:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563334423] [2023-11-06 22:44:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:44:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:44:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 22:44:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:44:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:44:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:44:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:44:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:44:40,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563334423] [2023-11-06 22:44:40,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563334423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:40,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180713860] [2023-11-06 22:44:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:40,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:40,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:44:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:44:40,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 22:44:40,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180713860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:40,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-06 22:44:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922138724] [2023-11-06 22:44:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:44:40,460 INFO L87 Difference]: Start difference. First operand 369 states and 565 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:40,547 INFO L93 Difference]: Finished difference Result 729 states and 1120 transitions. [2023-11-06 22:44:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2023-11-06 22:44:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:40,553 INFO L225 Difference]: With dead ends: 729 [2023-11-06 22:44:40,553 INFO L226 Difference]: Without dead ends: 371 [2023-11-06 22:44:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:44:40,556 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 8 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:40,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1837 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-06 22:44:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-06 22:44:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.535593220338983) internal successors, (453), 297 states have internal predecessors, (453), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2023-11-06 22:44:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 568 transitions. [2023-11-06 22:44:40,583 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 568 transitions. Word has length 109 [2023-11-06 22:44:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:40,584 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 568 transitions. [2023-11-06 22:44:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 568 transitions. [2023-11-06 22:44:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:44:40,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:40,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:40,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:40,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:40,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:40,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1018902216, now seen corresponding path program 1 times [2023-11-06 22:44:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:40,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509024050] [2023-11-06 22:44:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-06 22:44:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:44:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:44:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:44:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:44:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:44:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 22:44:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:44:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:44:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509024050] [2023-11-06 22:44:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509024050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903717202] [2023-11-06 22:44:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:41,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:41,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:44:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:41,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 22:44:41,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:41,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903717202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:41,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-06 22:44:41,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14628830] [2023-11-06 22:44:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:41,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:44:41,546 INFO L87 Difference]: Start difference. First operand 371 states and 568 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,643 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2023-11-06 22:44:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:41,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2023-11-06 22:44:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,648 INFO L225 Difference]: With dead ends: 731 [2023-11-06 22:44:41,649 INFO L226 Difference]: Without dead ends: 373 [2023-11-06 22:44:41,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:44:41,652 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 8 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1823 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:41,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-06 22:44:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-06 22:44:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-06 22:44:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 574 transitions. [2023-11-06 22:44:41,683 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 574 transitions. Word has length 110 [2023-11-06 22:44:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,685 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 574 transitions. [2023-11-06 22:44:41,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 574 transitions. [2023-11-06 22:44:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:44:41,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:41,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash -884998255, now seen corresponding path program 1 times [2023-11-06 22:44:41,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737981907] [2023-11-06 22:44:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:44:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:44:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:44:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:44:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 22:44:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:44:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:44:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 22:44:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:44:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737981907] [2023-11-06 22:44:42,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737981907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:44:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738003037] [2023-11-06 22:44:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:44:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:44:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:42,216 INFO L87 Difference]: Start difference. First operand 373 states and 574 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:44,929 INFO L93 Difference]: Finished difference Result 908 states and 1409 transitions. [2023-11-06 22:44:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:44:44,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2023-11-06 22:44:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:44,935 INFO L225 Difference]: With dead ends: 908 [2023-11-06 22:44:44,935 INFO L226 Difference]: Without dead ends: 558 [2023-11-06 22:44:44,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:44:44,938 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1073 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:44,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1166 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:44:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-06 22:44:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 373. [2023-11-06 22:44:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2023-11-06 22:44:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 573 transitions. [2023-11-06 22:44:45,002 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 573 transitions. Word has length 111 [2023-11-06 22:44:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:45,002 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 573 transitions. [2023-11-06 22:44:45,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 573 transitions. [2023-11-06 22:44:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 22:44:45,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:45,012 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:45,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:44:45,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:45,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash -348871252, now seen corresponding path program 2 times [2023-11-06 22:44:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073696879] [2023-11-06 22:44:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:44:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:44:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 22:44:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:44:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 22:44:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:44:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 22:44:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 22:44:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:44:45,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073696879] [2023-11-06 22:44:45,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073696879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:45,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:45,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:44:45,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762853629] [2023-11-06 22:44:45,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:45,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:44:45,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:45,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:44:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:45,358 INFO L87 Difference]: Start difference. First operand 373 states and 573 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:47,982 INFO L93 Difference]: Finished difference Result 910 states and 1412 transitions. [2023-11-06 22:44:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:44:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2023-11-06 22:44:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:47,988 INFO L225 Difference]: With dead ends: 910 [2023-11-06 22:44:47,988 INFO L226 Difference]: Without dead ends: 560 [2023-11-06 22:44:47,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:44:47,991 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1048 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:47,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1166 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:44:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-06 22:44:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2023-11-06 22:44:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-11-06 22:44:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2023-11-06 22:44:48,065 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 112 [2023-11-06 22:44:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:48,066 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2023-11-06 22:44:48,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2023-11-06 22:44:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 22:44:48,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:48,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:48,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:44:48,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:48,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash -814073736, now seen corresponding path program 1 times [2023-11-06 22:44:48,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:48,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703504690] [2023-11-06 22:44:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:44:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:44:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:44:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:44:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 22:44:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 22:44:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 22:44:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 22:44:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:44:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:48,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703504690] [2023-11-06 22:44:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703504690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:48,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:44:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72802982] [2023-11-06 22:44:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:48,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:44:48,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:44:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:48,395 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:51,001 INFO L93 Difference]: Finished difference Result 910 states and 1411 transitions. [2023-11-06 22:44:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:44:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2023-11-06 22:44:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:51,007 INFO L225 Difference]: With dead ends: 910 [2023-11-06 22:44:51,007 INFO L226 Difference]: Without dead ends: 560 [2023-11-06 22:44:51,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:44:51,012 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1054 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:51,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1165 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:44:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-06 22:44:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2023-11-06 22:44:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-11-06 22:44:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2023-11-06 22:44:51,061 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 113 [2023-11-06 22:44:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:51,062 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2023-11-06 22:44:51,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:44:51,062 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2023-11-06 22:44:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 22:44:51,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:51,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:51,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:44:51,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:51,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash -841139338, now seen corresponding path program 1 times [2023-11-06 22:44:51,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477275497] [2023-11-06 22:44:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:44:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:44:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:44:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:44:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 22:44:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 22:44:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 22:44:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 22:44:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:44:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477275497] [2023-11-06 22:44:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477275497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:44:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254190926] [2023-11-06 22:44:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:51,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:44:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:44:51,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:44:51,446 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 22:44:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:54,994 INFO L93 Difference]: Finished difference Result 908 states and 1406 transitions. [2023-11-06 22:44:54,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:44:54,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2023-11-06 22:44:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:55,000 INFO L225 Difference]: With dead ends: 908 [2023-11-06 22:44:55,001 INFO L226 Difference]: Without dead ends: 560 [2023-11-06 22:44:55,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:44:55,004 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1072 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4029 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 4354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 4029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:55,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1610 Invalid, 4354 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [325 Valid, 4029 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:44:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-06 22:44:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2023-11-06 22:44:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-06 22:44:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2023-11-06 22:44:55,089 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 113 [2023-11-06 22:44:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:55,091 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2023-11-06 22:44:55,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 22:44:55,091 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2023-11-06 22:44:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-06 22:44:55,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:55,096 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:55,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:44:55,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:55,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 8663705, now seen corresponding path program 2 times [2023-11-06 22:44:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852467171] [2023-11-06 22:44:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:44:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:44:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:44:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:44:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 22:44:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:44:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 22:44:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:44:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852467171] [2023-11-06 22:44:55,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852467171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:55,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:55,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:44:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131170700] [2023-11-06 22:44:55,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:55,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:44:55,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:55,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:44:55,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:44:55,406 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 22:44:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:58,914 INFO L93 Difference]: Finished difference Result 910 states and 1412 transitions. [2023-11-06 22:44:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:44:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2023-11-06 22:44:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:58,920 INFO L225 Difference]: With dead ends: 910 [2023-11-06 22:44:58,920 INFO L226 Difference]: Without dead ends: 562 [2023-11-06 22:44:58,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:44:58,924 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1052 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4200 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:58,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1612 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 4200 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:44:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-06 22:44:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 377. [2023-11-06 22:44:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 303 states have internal predecessors, (456), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2023-11-06 22:44:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2023-11-06 22:44:58,986 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 114 [2023-11-06 22:44:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:58,986 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2023-11-06 22:44:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-06 22:44:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2023-11-06 22:44:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 22:44:58,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:58,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:44:58,990 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:58,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1835622373, now seen corresponding path program 1 times [2023-11-06 22:44:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548207594] [2023-11-06 22:44:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:44:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:44:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:44:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:44:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:44:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 22:44:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:44:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:44:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:44:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:44:59,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548207594] [2023-11-06 22:44:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548207594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643560813] [2023-11-06 22:44:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:59,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:59,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:59,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:59,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:44:59,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:44:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643560813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:59,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:59,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-06 22:44:59,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659734764] [2023-11-06 22:44:59,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:59,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:44:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:44:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:44:59,818 INFO L87 Difference]: Start difference. First operand 377 states and 581 transitions. Second operand has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-06 22:45:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:04,112 INFO L93 Difference]: Finished difference Result 1285 states and 2084 transitions. [2023-11-06 22:45:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:45:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 115 [2023-11-06 22:45:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:04,121 INFO L225 Difference]: With dead ends: 1285 [2023-11-06 22:45:04,121 INFO L226 Difference]: Without dead ends: 939 [2023-11-06 22:45:04,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:45:04,125 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 2072 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 5752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:04,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1821 Invalid, 5752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [625 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-06 22:45:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-11-06 22:45:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 730. [2023-11-06 22:45:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 587 states have (on average 1.5792163543441227) internal successors, (927), 592 states have internal predecessors, (927), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2023-11-06 22:45:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1190 transitions. [2023-11-06 22:45:04,208 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1190 transitions. Word has length 115 [2023-11-06 22:45:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:04,208 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1190 transitions. [2023-11-06 22:45:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-06 22:45:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1190 transitions. [2023-11-06 22:45:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:45:04,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:04,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:04,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:04,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:04,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:04,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1826023173, now seen corresponding path program 1 times [2023-11-06 22:45:04,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:04,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100875378] [2023-11-06 22:45:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:45:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:45:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:45:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 22:45:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-06 22:45:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 22:45:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100875378] [2023-11-06 22:45:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100875378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:04,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:04,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938421478] [2023-11-06 22:45:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:04,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:04,610 INFO L87 Difference]: Start difference. First operand 730 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:06,596 INFO L93 Difference]: Finished difference Result 1900 states and 3163 transitions. [2023-11-06 22:45:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2023-11-06 22:45:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:06,617 INFO L225 Difference]: With dead ends: 1900 [2023-11-06 22:45:06,617 INFO L226 Difference]: Without dead ends: 1248 [2023-11-06 22:45:06,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:06,626 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1171 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:06,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 898 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:45:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2023-11-06 22:45:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1055. [2023-11-06 22:45:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 848 states have (on average 1.5943396226415094) internal successors, (1352), 853 states have internal predecessors, (1352), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2023-11-06 22:45:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1753 transitions. [2023-11-06 22:45:06,793 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1753 transitions. Word has length 118 [2023-11-06 22:45:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:06,794 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1753 transitions. [2023-11-06 22:45:06,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1753 transitions. [2023-11-06 22:45:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 22:45:06,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:06,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:06,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:45:06,813 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:06,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1063234977, now seen corresponding path program 1 times [2023-11-06 22:45:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482946476] [2023-11-06 22:45:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:45:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:45:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 22:45:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 22:45:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 22:45:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-06 22:45:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:07,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:07,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482946476] [2023-11-06 22:45:07,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482946476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:07,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:07,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369029334] [2023-11-06 22:45:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:07,033 INFO L87 Difference]: Start difference. First operand 1055 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:09,119 INFO L93 Difference]: Finished difference Result 2705 states and 4547 transitions. [2023-11-06 22:45:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:09,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2023-11-06 22:45:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:09,134 INFO L225 Difference]: With dead ends: 2705 [2023-11-06 22:45:09,135 INFO L226 Difference]: Without dead ends: 1781 [2023-11-06 22:45:09,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:09,140 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1158 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:09,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 859 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:45:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2023-11-06 22:45:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1588. [2023-11-06 22:45:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1286 states have (on average 1.6003110419906688) internal successors, (2058), 1291 states have internal predecessors, (2058), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2023-11-06 22:45:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2649 transitions. [2023-11-06 22:45:09,304 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2649 transitions. Word has length 119 [2023-11-06 22:45:09,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:09,304 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2649 transitions. [2023-11-06 22:45:09,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2649 transitions. [2023-11-06 22:45:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:45:09,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:09,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:09,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:45:09,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:09,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash 15597751, now seen corresponding path program 1 times [2023-11-06 22:45:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217875921] [2023-11-06 22:45:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:09,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 22:45:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:45:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 22:45:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:45:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 22:45:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-06 22:45:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217875921] [2023-11-06 22:45:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217875921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:09,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497993180] [2023-11-06 22:45:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:09,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:09,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:09,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:09,462 INFO L87 Difference]: Start difference. First operand 1588 states and 2649 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:11,561 INFO L93 Difference]: Finished difference Result 3912 states and 6633 transitions. [2023-11-06 22:45:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-11-06 22:45:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:11,586 INFO L225 Difference]: With dead ends: 3912 [2023-11-06 22:45:11,586 INFO L226 Difference]: Without dead ends: 2590 [2023-11-06 22:45:11,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:11,596 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1167 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:11,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 851 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:45:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2023-11-06 22:45:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2397. [2023-11-06 22:45:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1972 states have (on average 1.604969574036511) internal successors, (3165), 1977 states have internal predecessors, (3165), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2023-11-06 22:45:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4018 transitions. [2023-11-06 22:45:11,904 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4018 transitions. Word has length 120 [2023-11-06 22:45:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:11,905 INFO L495 AbstractCegarLoop]: Abstraction has 2397 states and 4018 transitions. [2023-11-06 22:45:11,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4018 transitions. [2023-11-06 22:45:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-06 22:45:11,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:11,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:11,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:45:11,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:11,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 615683806, now seen corresponding path program 1 times [2023-11-06 22:45:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336563568] [2023-11-06 22:45:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 22:45:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 22:45:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:45:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:45:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 22:45:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:12,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336563568] [2023-11-06 22:45:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336563568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:12,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:12,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538361029] [2023-11-06 22:45:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:12,054 INFO L87 Difference]: Start difference. First operand 2397 states and 4018 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:14,162 INFO L93 Difference]: Finished difference Result 5796 states and 9893 transitions. [2023-11-06 22:45:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2023-11-06 22:45:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:14,194 INFO L225 Difference]: With dead ends: 5796 [2023-11-06 22:45:14,194 INFO L226 Difference]: Without dead ends: 3884 [2023-11-06 22:45:14,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:14,204 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1150 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:14,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 853 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:45:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2023-11-06 22:45:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3691. [2023-11-06 22:45:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3087 states have (on average 1.6077097505668934) internal successors, (4963), 3092 states have internal predecessors, (4963), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2023-11-06 22:45:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 6200 transitions. [2023-11-06 22:45:14,606 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 6200 transitions. Word has length 121 [2023-11-06 22:45:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:14,606 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 6200 transitions. [2023-11-06 22:45:14,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 6200 transitions. [2023-11-06 22:45:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-06 22:45:14,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:14,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:45:14,622 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:14,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:14,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1448203013, now seen corresponding path program 1 times [2023-11-06 22:45:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455312795] [2023-11-06 22:45:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:45:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:45:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 22:45:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 22:45:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:45:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-06 22:45:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455312795] [2023-11-06 22:45:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455312795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:14,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:14,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:14,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293412434] [2023-11-06 22:45:14,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:14,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:14,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:14,764 INFO L87 Difference]: Start difference. First operand 3691 states and 6200 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:17,032 INFO L93 Difference]: Finished difference Result 8899 states and 15257 transitions. [2023-11-06 22:45:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:17,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2023-11-06 22:45:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:17,081 INFO L225 Difference]: With dead ends: 8899 [2023-11-06 22:45:17,081 INFO L226 Difference]: Without dead ends: 6025 [2023-11-06 22:45:17,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:17,094 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1136 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:17,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 872 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:45:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6025 states. [2023-11-06 22:45:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6025 to 5832. [2023-11-06 22:45:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4852 states have (on average 1.6011953833470733) internal successors, (7769), 4857 states have internal predecessors, (7769), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2023-11-06 22:45:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9802 transitions. [2023-11-06 22:45:17,854 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9802 transitions. Word has length 122 [2023-11-06 22:45:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:17,855 INFO L495 AbstractCegarLoop]: Abstraction has 5832 states and 9802 transitions. [2023-11-06 22:45:17,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9802 transitions. [2023-11-06 22:45:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:45:17,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:17,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:45:17,878 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:17,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash -423922022, now seen corresponding path program 1 times [2023-11-06 22:45:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571072465] [2023-11-06 22:45:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:45:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 22:45:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:45:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 22:45:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 22:45:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-06 22:45:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:18,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571072465] [2023-11-06 22:45:18,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571072465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:18,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:18,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724657266] [2023-11-06 22:45:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:18,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:18,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:18,034 INFO L87 Difference]: Start difference. First operand 5832 states and 9802 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:20,578 INFO L93 Difference]: Finished difference Result 14516 states and 24870 transitions. [2023-11-06 22:45:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:20,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2023-11-06 22:45:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:20,636 INFO L225 Difference]: With dead ends: 14516 [2023-11-06 22:45:20,636 INFO L226 Difference]: Without dead ends: 9903 [2023-11-06 22:45:20,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:20,657 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1158 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:20,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 852 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:45:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9903 states. [2023-11-06 22:45:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9903 to 9710. [2023-11-06 22:45:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 8124 states have (on average 1.5987198424421467) internal successors, (12988), 8129 states have internal predecessors, (12988), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2023-11-06 22:45:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 16311 transitions. [2023-11-06 22:45:21,816 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 16311 transitions. Word has length 123 [2023-11-06 22:45:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:21,817 INFO L495 AbstractCegarLoop]: Abstraction has 9710 states and 16311 transitions. [2023-11-06 22:45:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 16311 transitions. [2023-11-06 22:45:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:45:21,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:21,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:21,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:45:21,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:21,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1473374131, now seen corresponding path program 1 times [2023-11-06 22:45:21,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:21,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371017906] [2023-11-06 22:45:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:21,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:45:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:45:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 22:45:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-06 22:45:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 22:45:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-06 22:45:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:21,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:21,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371017906] [2023-11-06 22:45:21,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371017906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:21,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18950165] [2023-11-06 22:45:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:21,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:21,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:21,977 INFO L87 Difference]: Start difference. First operand 9710 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:24,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:24,989 INFO L93 Difference]: Finished difference Result 25225 states and 43151 transitions. [2023-11-06 22:45:24,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:24,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2023-11-06 22:45:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:25,070 INFO L225 Difference]: With dead ends: 25225 [2023-11-06 22:45:25,070 INFO L226 Difference]: Without dead ends: 17216 [2023-11-06 22:45:25,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:25,100 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1159 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:25,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 889 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:45:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17216 states. [2023-11-06 22:45:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17216 to 17023. [2023-11-06 22:45:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 14234 states have (on average 1.590136293382043) internal successors, (22634), 14239 states have internal predecessors, (22634), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2023-11-06 22:45:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 28507 transitions. [2023-11-06 22:45:26,867 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 28507 transitions. Word has length 124 [2023-11-06 22:45:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:26,868 INFO L495 AbstractCegarLoop]: Abstraction has 17023 states and 28507 transitions. [2023-11-06 22:45:26,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 28507 transitions. [2023-11-06 22:45:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-06 22:45:26,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:26,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:26,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:45:26,908 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:26,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash 627752441, now seen corresponding path program 1 times [2023-11-06 22:45:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605342073] [2023-11-06 22:45:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:26,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:45:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:45:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 22:45:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 22:45:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 22:45:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 22:45:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:27,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:27,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605342073] [2023-11-06 22:45:27,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605342073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:27,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:27,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:27,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209995984] [2023-11-06 22:45:27,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:27,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:27,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:27,084 INFO L87 Difference]: Start difference. First operand 17023 states and 28507 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:30,961 INFO L93 Difference]: Finished difference Result 45201 states and 77164 transitions. [2023-11-06 22:45:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:30,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2023-11-06 22:45:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:31,231 INFO L225 Difference]: With dead ends: 45201 [2023-11-06 22:45:31,231 INFO L226 Difference]: Without dead ends: 30556 [2023-11-06 22:45:31,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:31,274 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1140 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:31,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 852 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:45:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30556 states. [2023-11-06 22:45:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30556 to 30363. [2023-11-06 22:45:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30363 states, 25535 states have (on average 1.5859408654787546) internal successors, (40497), 25540 states have internal predecessors, (40497), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2023-11-06 22:45:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30363 states to 30363 states and 50722 transitions. [2023-11-06 22:45:34,142 INFO L78 Accepts]: Start accepts. Automaton has 30363 states and 50722 transitions. Word has length 125 [2023-11-06 22:45:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:34,143 INFO L495 AbstractCegarLoop]: Abstraction has 30363 states and 50722 transitions. [2023-11-06 22:45:34,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 30363 states and 50722 transitions. [2023-11-06 22:45:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-06 22:45:34,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:34,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:34,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:45:34,177 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:34,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1060158123, now seen corresponding path program 1 times [2023-11-06 22:45:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:34,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218012423] [2023-11-06 22:45:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 22:45:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 22:45:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:45:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 22:45:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 22:45:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-06 22:45:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:34,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:34,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218012423] [2023-11-06 22:45:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218012423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:34,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645384323] [2023-11-06 22:45:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:34,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:34,325 INFO L87 Difference]: Start difference. First operand 30363 states and 50722 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:40,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:40,199 INFO L93 Difference]: Finished difference Result 82938 states and 140688 transitions. [2023-11-06 22:45:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2023-11-06 22:45:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:40,531 INFO L225 Difference]: With dead ends: 82938 [2023-11-06 22:45:40,532 INFO L226 Difference]: Without dead ends: 55765 [2023-11-06 22:45:40,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:40,614 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1134 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:40,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 864 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:45:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55765 states. [2023-11-06 22:45:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55765 to 55572. [2023-11-06 22:45:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55572 states, 47029 states have (on average 1.5804716238916414) internal successors, (74328), 47034 states have internal predecessors, (74328), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2023-11-06 22:45:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55572 states to 55572 states and 92515 transitions. [2023-11-06 22:45:46,489 INFO L78 Accepts]: Start accepts. Automaton has 55572 states and 92515 transitions. Word has length 126 [2023-11-06 22:45:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:46,489 INFO L495 AbstractCegarLoop]: Abstraction has 55572 states and 92515 transitions. [2023-11-06 22:45:46,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:46,490 INFO L276 IsEmpty]: Start isEmpty. Operand 55572 states and 92515 transitions. [2023-11-06 22:45:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:45:46,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:46,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:46,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:45:46,520 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:46,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:46,521 INFO L85 PathProgramCache]: Analyzing trace with hash -489258535, now seen corresponding path program 1 times [2023-11-06 22:45:46,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:46,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328904651] [2023-11-06 22:45:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:46,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:45:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:45:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:45:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:45:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:45:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 22:45:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:45:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:45:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:45:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:45:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:45:46,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:46,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328904651] [2023-11-06 22:45:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328904651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:46,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:46,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:46,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378109065] [2023-11-06 22:45:46,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:46,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:46,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:46,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:46,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:46,644 INFO L87 Difference]: Start difference. First operand 55572 states and 92515 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:45:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:55,865 INFO L93 Difference]: Finished difference Result 103994 states and 176674 transitions. [2023-11-06 22:45:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:55,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2023-11-06 22:45:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:56,566 INFO L225 Difference]: With dead ends: 103994 [2023-11-06 22:45:56,566 INFO L226 Difference]: Without dead ends: 103839 [2023-11-06 22:45:56,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:56,605 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1130 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:56,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 853 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:45:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103839 states. [2023-11-06 22:46:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103839 to 103646. [2023-11-06 22:46:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103646 states, 88304 states have (on average 1.5736433230657727) internal successors, (138959), 88309 states have internal predecessors, (138959), 15320 states have call successors, (15320), 17 states have call predecessors, (15320), 21 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2023-11-06 22:46:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103646 states to 103646 states and 171790 transitions. [2023-11-06 22:46:05,763 INFO L78 Accepts]: Start accepts. Automaton has 103646 states and 171790 transitions. Word has length 127 [2023-11-06 22:46:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:46:05,763 INFO L495 AbstractCegarLoop]: Abstraction has 103646 states and 171790 transitions. [2023-11-06 22:46:05,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:46:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 103646 states and 171790 transitions. [2023-11-06 22:46:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-06 22:46:05,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:05,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:05,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:46:05,798 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:05,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:05,798 INFO L85 PathProgramCache]: Analyzing trace with hash -574273588, now seen corresponding path program 1 times [2023-11-06 22:46:05,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530015349] [2023-11-06 22:46:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:46:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:46:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:46:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:46:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:46:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:46:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 22:46:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 22:46:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 22:46:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:46:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:46:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-06 22:46:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 22:46:06,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530015349] [2023-11-06 22:46:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530015349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785642083] [2023-11-06 22:46:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:06,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:06,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:06,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:06,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07219f35-3742-4c8a-8412-e047ab018b38/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:46:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:06,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:46:06,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:46:06,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-06 22:46:07,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785642083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:07,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:07,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-11-06 22:46:07,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278090933] [2023-11-06 22:46:07,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:07,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:46:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:46:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:46:07,016 INFO L87 Difference]: Start difference. First operand 103646 states and 171790 transitions. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 18 states have internal predecessors, (218), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33)