./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74a12e124f66b10df64ef68155d31c3be83012aab827a45870f5335a6569b75a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:21:13,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:21:13,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:21:13,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:21:13,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:21:13,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:21:13,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:21:13,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:21:13,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:21:13,718 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:21:13,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:21:13,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:21:13,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:21:13,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:21:13,719 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:21:13,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:21:13,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:21:13,719 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:21:13,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:21:13,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:21:13,720 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:21:13,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:21:13,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:21:13,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:21:13,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:21:13,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:21:13,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:21:13,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:21:13,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:21:13,722 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74a12e124f66b10df64ef68155d31c3be83012aab827a45870f5335a6569b75a [2024-12-02 12:21:13,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:21:13,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:21:13,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:21:13,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:21:13,975 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:21:13,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c [2024-12-02 12:21:16,593 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/data/31ec0640f/a0087438147c43e8976414ad6f65f7a5/FLAG23f8c28fe [2024-12-02 12:21:16,876 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:21:16,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c [2024-12-02 12:21:16,890 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/data/31ec0640f/a0087438147c43e8976414ad6f65f7a5/FLAG23f8c28fe [2024-12-02 12:21:17,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/data/31ec0640f/a0087438147c43e8976414ad6f65f7a5 [2024-12-02 12:21:17,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:21:17,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:21:17,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:21:17,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:21:17,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:21:17,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f5ec47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17, skipping insertion in model container [2024-12-02 12:21:17,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,237 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:21:17,422 WARN L250 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_747d466d-a984-4f50-8903-0ef0a4105767/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c[4289,4302] [2024-12-02 12:21:17,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:21:17,639 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:21:17,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-12-02 12:21:17,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [202] [2024-12-02 12:21:17,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [211] [2024-12-02 12:21:17,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [403] [2024-12-02 12:21:17,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [815] [2024-12-02 12:21:17,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1181] [2024-12-02 12:21:17,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1201] [2024-12-02 12:21:17,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2279] [2024-12-02 12:21:17,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2435] [2024-12-02 12:21:17,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2452] [2024-12-02 12:21:17,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2515] [2024-12-02 12:21:17,661 WARN L250 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_747d466d-a984-4f50-8903-0ef0a4105767/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c[4289,4302] [2024-12-02 12:21:17,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:21:17,755 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:21:17,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17 WrapperNode [2024-12-02 12:21:17,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:21:17,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:21:17,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:21:17,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:21:17,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,803 INFO L138 Inliner]: procedures = 107, calls = 113, calls flagged for inlining = 37, calls inlined = 30, statements flattened = 586 [2024-12-02 12:21:17,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:21:17,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:21:17,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:21:17,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:21:17,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,835 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-12-02 12:21:17,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,844 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:21:17,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:21:17,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:21:17,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:21:17,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (1/1) ... [2024-12-02 12:21:17,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:21:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:17,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:21:17,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:21:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 12:21:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 12:21:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 12:21:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 12:21:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 12:21:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 12:21:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 12:21:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 12:21:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:21:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:21:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:21:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:21:18,059 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:21:18,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:21:18,478 INFO L? ?]: Removed 172 outVars from TransFormulas that were not future-live. [2024-12-02 12:21:18,478 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:21:18,490 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:21:18,490 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:21:18,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:21:18 BoogieIcfgContainer [2024-12-02 12:21:18,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:21:18,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:21:18,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:21:18,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:21:18,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:21:17" (1/3) ... [2024-12-02 12:21:18,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2f47f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:21:18, skipping insertion in model container [2024-12-02 12:21:18,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:17" (2/3) ... [2024-12-02 12:21:18,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2f47f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:21:18, skipping insertion in model container [2024-12-02 12:21:18,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:21:18" (3/3) ... [2024-12-02 12:21:18,501 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec0_product05.cil.c [2024-12-02 12:21:18,515 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:21:18,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec0_product05.cil.c that has 8 procedures, 130 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:21:18,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:21:18,585 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@581556af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:21:18,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:21:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 107 states have (on average 1.485981308411215) internal successors, (159), 109 states have internal predecessors, (159), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 12:21:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 12:21:18,599 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:18,599 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:18,600 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:18,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1710101797, now seen corresponding path program 1 times [2024-12-02 12:21:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307316593] [2024-12-02 12:21:18,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 12:21:19,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307316593] [2024-12-02 12:21:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307316593] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788121291] [2024-12-02 12:21:19,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:19,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:19,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:19,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:21:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:19,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:21:19,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 12:21:19,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788121291] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:19,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 12:21:19,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553000579] [2024-12-02 12:21:19,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:19,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:21:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:19,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:21:19,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:19,370 INFO L87 Difference]: Start difference. First operand has 130 states, 107 states have (on average 1.485981308411215) internal successors, (159), 109 states have internal predecessors, (159), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:19,396 INFO L93 Difference]: Finished difference Result 211 states and 294 transitions. [2024-12-02 12:21:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:21:19,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2024-12-02 12:21:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:19,405 INFO L225 Difference]: With dead ends: 211 [2024-12-02 12:21:19,405 INFO L226 Difference]: Without dead ends: 123 [2024-12-02 12:21:19,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:19,410 INFO L435 NwaCegarLoop]: 183 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, 183 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 [2024-12-02 12:21:19,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-02 12:21:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-12-02 12:21:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 102 states have internal predecessors, (148), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 12:21:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 175 transitions. [2024-12-02 12:21:19,447 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 175 transitions. Word has length 75 [2024-12-02 12:21:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:19,449 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 175 transitions. [2024-12-02 12:21:19,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 175 transitions. [2024-12-02 12:21:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 12:21:19,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:19,452 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:19,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:21:19,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:21:19,653 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:19,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash 266861023, now seen corresponding path program 1 times [2024-12-02 12:21:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:19,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781470335] [2024-12-02 12:21:19,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 12:21:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:19,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781470335] [2024-12-02 12:21:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781470335] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:19,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393991083] [2024-12-02 12:21:19,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:19,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:19,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:19,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:19,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:21:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:20,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:21:20,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 12:21:20,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393991083] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:20,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:21:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425786508] [2024-12-02 12:21:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:20,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:20,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:20,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:21:20,097 INFO L87 Difference]: Start difference. First operand 123 states and 175 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:20,120 INFO L93 Difference]: Finished difference Result 200 states and 274 transitions. [2024-12-02 12:21:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2024-12-02 12:21:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:20,123 INFO L225 Difference]: With dead ends: 200 [2024-12-02 12:21:20,123 INFO L226 Difference]: Without dead ends: 125 [2024-12-02 12:21:20,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:21:20,124 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 1 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:20,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 344 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-02 12:21:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2024-12-02 12:21:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 103 states have internal predecessors, (149), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 12:21:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2024-12-02 12:21:20,136 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 75 [2024-12-02 12:21:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:20,136 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2024-12-02 12:21:20,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2024-12-02 12:21:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 12:21:20,138 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:20,138 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:20,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:21:20,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:20,339 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:20,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:20,339 INFO L85 PathProgramCache]: Analyzing trace with hash -883136634, now seen corresponding path program 1 times [2024-12-02 12:21:20,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:20,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507201399] [2024-12-02 12:21:20,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:20,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 12:21:20,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507201399] [2024-12-02 12:21:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507201399] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404702300] [2024-12-02 12:21:20,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:20,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:20,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:20,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:20,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:21:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:20,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:21:20,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:21:20,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:20,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404702300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:20,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:20,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 12:21:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500373324] [2024-12-02 12:21:20,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:20,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:20,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:20,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:20,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:21:20,809 INFO L87 Difference]: Start difference. First operand 124 states and 176 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:20,875 INFO L93 Difference]: Finished difference Result 241 states and 345 transitions. [2024-12-02 12:21:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:21:20,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2024-12-02 12:21:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:20,878 INFO L225 Difference]: With dead ends: 241 [2024-12-02 12:21:20,878 INFO L226 Difference]: Without dead ends: 126 [2024-12-02 12:21:20,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:21:20,880 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:20,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 657 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-12-02 12:21:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-12-02 12:21:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 103 states have (on average 1.4563106796116505) internal successors, (150), 105 states have internal predecessors, (150), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-12-02 12:21:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 179 transitions. [2024-12-02 12:21:20,891 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 179 transitions. Word has length 79 [2024-12-02 12:21:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:20,891 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 179 transitions. [2024-12-02 12:21:20,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 179 transitions. [2024-12-02 12:21:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 12:21:20,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:20,893 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:20,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:21:21,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:21,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:21,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1418785907, now seen corresponding path program 1 times [2024-12-02 12:21:21,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844883377] [2024-12-02 12:21:21,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 12:21:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844883377] [2024-12-02 12:21:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844883377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:21,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:21:21,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279194803] [2024-12-02 12:21:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:21,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:21,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:21,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:21,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:21,292 INFO L87 Difference]: Start difference. First operand 126 states and 179 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:21,333 INFO L93 Difference]: Finished difference Result 233 states and 333 transitions. [2024-12-02 12:21:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:21:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2024-12-02 12:21:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:21,335 INFO L225 Difference]: With dead ends: 233 [2024-12-02 12:21:21,335 INFO L226 Difference]: Without dead ends: 126 [2024-12-02 12:21:21,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:21,337 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:21,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 661 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-12-02 12:21:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-12-02 12:21:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 103 states have (on average 1.4563106796116505) internal successors, (150), 105 states have internal predecessors, (150), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-12-02 12:21:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 178 transitions. [2024-12-02 12:21:21,347 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 178 transitions. Word has length 80 [2024-12-02 12:21:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:21,348 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 178 transitions. [2024-12-02 12:21:21,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 178 transitions. [2024-12-02 12:21:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 12:21:21,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:21,350 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:21,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:21:21,350 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:21,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash -496090954, now seen corresponding path program 2 times [2024-12-02 12:21:21,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:21,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126547392] [2024-12-02 12:21:21,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:21:21,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:21,383 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:21:21,383 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:21:21,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:21,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126547392] [2024-12-02 12:21:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126547392] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:21,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:21,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:21:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344105562] [2024-12-02 12:21:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:21,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:21,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:21,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:21,491 INFO L87 Difference]: Start difference. First operand 126 states and 178 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:21,539 INFO L93 Difference]: Finished difference Result 248 states and 358 transitions. [2024-12-02 12:21:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:21:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2024-12-02 12:21:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:21,542 INFO L225 Difference]: With dead ends: 248 [2024-12-02 12:21:21,542 INFO L226 Difference]: Without dead ends: 181 [2024-12-02 12:21:21,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:21:21,543 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 147 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:21,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 600 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-12-02 12:21:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-12-02 12:21:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 151 states have (on average 1.5298013245033113) internal successors, (231), 154 states have internal predecessors, (231), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2024-12-02 12:21:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 269 transitions. [2024-12-02 12:21:21,559 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 269 transitions. Word has length 81 [2024-12-02 12:21:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:21,559 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 269 transitions. [2024-12-02 12:21:21,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 269 transitions. [2024-12-02 12:21:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 12:21:21,562 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:21,562 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:21,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:21:21,562 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:21,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1264858983, now seen corresponding path program 1 times [2024-12-02 12:21:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:21,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107753997] [2024-12-02 12:21:21,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 12:21:21,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107753997] [2024-12-02 12:21:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107753997] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:21,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:21:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843341340] [2024-12-02 12:21:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:21,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:21,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:21,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:21,748 INFO L87 Difference]: Start difference. First operand 181 states and 269 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:21,794 INFO L93 Difference]: Finished difference Result 345 states and 518 transitions. [2024-12-02 12:21:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:21:21,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2024-12-02 12:21:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:21,796 INFO L225 Difference]: With dead ends: 345 [2024-12-02 12:21:21,796 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 12:21:21,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:21,797 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 1 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:21,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 664 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 12:21:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-12-02 12:21:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 156 states have internal predecessors, (232), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 272 transitions. [2024-12-02 12:21:21,811 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 272 transitions. Word has length 90 [2024-12-02 12:21:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:21,811 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 272 transitions. [2024-12-02 12:21:21,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 272 transitions. [2024-12-02 12:21:21,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 12:21:21,813 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:21,813 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:21,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:21:21,813 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:21,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash -550284087, now seen corresponding path program 1 times [2024-12-02 12:21:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:21,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565779376] [2024-12-02 12:21:21,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:21,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:21,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565779376] [2024-12-02 12:21:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565779376] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:21,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829696216] [2024-12-02 12:21:21,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:21,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:21,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:21,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:21,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:21:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:22,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:21:22,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:22,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:22,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829696216] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:22,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:22,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 12:21:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135207892] [2024-12-02 12:21:22,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:22,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:21:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:22,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:21:22,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:21:22,279 INFO L87 Difference]: Start difference. First operand 183 states and 272 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 12:21:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:22,325 INFO L93 Difference]: Finished difference Result 460 states and 716 transitions. [2024-12-02 12:21:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:21:22,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2024-12-02 12:21:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:22,329 INFO L225 Difference]: With dead ends: 460 [2024-12-02 12:21:22,329 INFO L226 Difference]: Without dead ends: 359 [2024-12-02 12:21:22,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:21:22,330 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 284 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:22,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 688 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-12-02 12:21:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 331. [2024-12-02 12:21:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 300 states have (on average 1.6833333333333333) internal successors, (505), 304 states have internal predecessors, (505), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 545 transitions. [2024-12-02 12:21:22,346 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 545 transitions. Word has length 83 [2024-12-02 12:21:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:22,346 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 545 transitions. [2024-12-02 12:21:22,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 12:21:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 545 transitions. [2024-12-02 12:21:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 12:21:22,348 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:22,348 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:22,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:21:22,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 12:21:22,549 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:22,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1336513227, now seen corresponding path program 1 times [2024-12-02 12:21:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519234080] [2024-12-02 12:21:22,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:22,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:22,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519234080] [2024-12-02 12:21:22,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519234080] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:22,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:22,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:22,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487830683] [2024-12-02 12:21:22,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:22,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:22,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:22,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:22,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:22,620 INFO L87 Difference]: Start difference. First operand 331 states and 545 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:22,643 INFO L93 Difference]: Finished difference Result 789 states and 1333 transitions. [2024-12-02 12:21:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:22,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-12-02 12:21:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:22,647 INFO L225 Difference]: With dead ends: 789 [2024-12-02 12:21:22,647 INFO L226 Difference]: Without dead ends: 485 [2024-12-02 12:21:22,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:22,649 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 57 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 345 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 [2024-12-02 12:21:22,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 345 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-12-02 12:21:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 475. [2024-12-02 12:21:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 444 states have (on average 1.7207207207207207) internal successors, (764), 448 states have internal predecessors, (764), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 804 transitions. [2024-12-02 12:21:22,670 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 804 transitions. Word has length 91 [2024-12-02 12:21:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:22,670 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 804 transitions. [2024-12-02 12:21:22,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 804 transitions. [2024-12-02 12:21:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 12:21:22,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:22,672 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:22,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:21:22,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:22,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash -893329195, now seen corresponding path program 1 times [2024-12-02 12:21:22,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:22,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737793077] [2024-12-02 12:21:22,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:22,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:22,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737793077] [2024-12-02 12:21:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737793077] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:22,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:22,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89882288] [2024-12-02 12:21:22,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:22,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:22,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:22,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:22,739 INFO L87 Difference]: Start difference. First operand 475 states and 804 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:22,764 INFO L93 Difference]: Finished difference Result 1155 states and 1991 transitions. [2024-12-02 12:21:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:22,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-12-02 12:21:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:22,770 INFO L225 Difference]: With dead ends: 1155 [2024-12-02 12:21:22,770 INFO L226 Difference]: Without dead ends: 714 [2024-12-02 12:21:22,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:22,771 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 55 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:22,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-12-02 12:21:22,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 704. [2024-12-02 12:21:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 673 states have (on average 1.736998514115899) internal successors, (1169), 677 states have internal predecessors, (1169), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1209 transitions. [2024-12-02 12:21:22,799 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1209 transitions. Word has length 92 [2024-12-02 12:21:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:22,800 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1209 transitions. [2024-12-02 12:21:22,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1209 transitions. [2024-12-02 12:21:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 12:21:22,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:22,803 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:22,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:21:22,803 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:22,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1497079913, now seen corresponding path program 1 times [2024-12-02 12:21:22,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:22,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391595430] [2024-12-02 12:21:22,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391595430] [2024-12-02 12:21:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391595430] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:22,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678978578] [2024-12-02 12:21:22,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:22,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:22,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:22,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:22,868 INFO L87 Difference]: Start difference. First operand 704 states and 1209 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:22,900 INFO L93 Difference]: Finished difference Result 1734 states and 3018 transitions. [2024-12-02 12:21:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:22,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2024-12-02 12:21:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:22,906 INFO L225 Difference]: With dead ends: 1734 [2024-12-02 12:21:22,906 INFO L226 Difference]: Without dead ends: 1081 [2024-12-02 12:21:22,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:22,908 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 53 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:22,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2024-12-02 12:21:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1071. [2024-12-02 12:21:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1040 states have (on average 1.7403846153846154) internal successors, (1810), 1044 states have internal predecessors, (1810), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1850 transitions. [2024-12-02 12:21:22,953 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1850 transitions. Word has length 93 [2024-12-02 12:21:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:22,953 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1850 transitions. [2024-12-02 12:21:22,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1850 transitions. [2024-12-02 12:21:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 12:21:22,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:22,957 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:22,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:21:22,957 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:22,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash 383182451, now seen corresponding path program 1 times [2024-12-02 12:21:22,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:22,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251909590] [2024-12-02 12:21:22,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:23,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251909590] [2024-12-02 12:21:23,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251909590] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:23,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001312779] [2024-12-02 12:21:23,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:23,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:23,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,021 INFO L87 Difference]: Start difference. First operand 1071 states and 1850 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:23,064 INFO L93 Difference]: Finished difference Result 2675 states and 4672 transitions. [2024-12-02 12:21:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:23,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2024-12-02 12:21:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:23,072 INFO L225 Difference]: With dead ends: 2675 [2024-12-02 12:21:23,072 INFO L226 Difference]: Without dead ends: 1689 [2024-12-02 12:21:23,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,075 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 51 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:23,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-12-02 12:21:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1679. [2024-12-02 12:21:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1648 states have (on average 1.737257281553398) internal successors, (2863), 1652 states have internal predecessors, (2863), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2903 transitions. [2024-12-02 12:21:23,146 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2903 transitions. Word has length 94 [2024-12-02 12:21:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:23,146 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 2903 transitions. [2024-12-02 12:21:23,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2903 transitions. [2024-12-02 12:21:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 12:21:23,151 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:23,151 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2024-12-02 12:21:23,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:21:23,151 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:23,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1421323916, now seen corresponding path program 2 times [2024-12-02 12:21:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964208933] [2024-12-02 12:21:23,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:21:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:23,181 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:21:23,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 12:21:23,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:23,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964208933] [2024-12-02 12:21:23,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964208933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:23,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:23,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:21:23,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808660111] [2024-12-02 12:21:23,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:23,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:23,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:23,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:23,247 INFO L87 Difference]: Start difference. First operand 1679 states and 2903 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:23,323 INFO L93 Difference]: Finished difference Result 2911 states and 5032 transitions. [2024-12-02 12:21:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:21:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2024-12-02 12:21:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:23,336 INFO L225 Difference]: With dead ends: 2911 [2024-12-02 12:21:23,336 INFO L226 Difference]: Without dead ends: 2842 [2024-12-02 12:21:23,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:21:23,338 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 144 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:23,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 597 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2024-12-02 12:21:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1679. [2024-12-02 12:21:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1648 states have (on average 1.737257281553398) internal successors, (2863), 1652 states have internal predecessors, (2863), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2903 transitions. [2024-12-02 12:21:23,423 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2903 transitions. Word has length 95 [2024-12-02 12:21:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:23,423 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 2903 transitions. [2024-12-02 12:21:23,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2903 transitions. [2024-12-02 12:21:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 12:21:23,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:23,428 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2024-12-02 12:21:23,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:21:23,428 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:23,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash 123414882, now seen corresponding path program 1 times [2024-12-02 12:21:23,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:23,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410022259] [2024-12-02 12:21:23,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:23,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 12:21:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:23,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410022259] [2024-12-02 12:21:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410022259] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:23,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92880396] [2024-12-02 12:21:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:23,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:23,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:23,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:23,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,513 INFO L87 Difference]: Start difference. First operand 1679 states and 2903 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:23,557 INFO L93 Difference]: Finished difference Result 2876 states and 4984 transitions. [2024-12-02 12:21:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:23,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-12-02 12:21:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:23,565 INFO L225 Difference]: With dead ends: 2876 [2024-12-02 12:21:23,565 INFO L226 Difference]: Without dead ends: 1689 [2024-12-02 12:21:23,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,567 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 56 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:23,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 406 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-12-02 12:21:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1679. [2024-12-02 12:21:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1648 states have (on average 1.7239077669902914) internal successors, (2841), 1652 states have internal predecessors, (2841), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2881 transitions. [2024-12-02 12:21:23,637 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2881 transitions. Word has length 96 [2024-12-02 12:21:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:23,637 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 2881 transitions. [2024-12-02 12:21:23,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2881 transitions. [2024-12-02 12:21:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 12:21:23,641 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:23,642 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:23,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:21:23,642 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:23,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1898864259, now seen corresponding path program 1 times [2024-12-02 12:21:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:23,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919225032] [2024-12-02 12:21:23,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:23,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919225032] [2024-12-02 12:21:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919225032] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:23,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:23,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10379108] [2024-12-02 12:21:23,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:23,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:23,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:23,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,714 INFO L87 Difference]: Start difference. First operand 1679 states and 2881 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, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:23,783 INFO L93 Difference]: Finished difference Result 4275 states and 7408 transitions. [2024-12-02 12:21:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:23,783 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, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-12-02 12:21:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:23,795 INFO L225 Difference]: With dead ends: 4275 [2024-12-02 12:21:23,795 INFO L226 Difference]: Without dead ends: 2739 [2024-12-02 12:21:23,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,798 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 49 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:23,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2024-12-02 12:21:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2729. [2024-12-02 12:21:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2698 states have (on average 1.7164566345441068) internal successors, (4631), 2702 states have internal predecessors, (4631), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4671 transitions. [2024-12-02 12:21:23,900 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4671 transitions. Word has length 96 [2024-12-02 12:21:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:23,901 INFO L471 AbstractCegarLoop]: Abstraction has 2729 states and 4671 transitions. [2024-12-02 12:21:23,901 INFO L472 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, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4671 transitions. [2024-12-02 12:21:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:21:23,907 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:23,907 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:23,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:21:23,908 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:23,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash 842828389, now seen corresponding path program 1 times [2024-12-02 12:21:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94733551] [2024-12-02 12:21:23,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:23,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:23,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94733551] [2024-12-02 12:21:23,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94733551] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:23,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:23,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590310912] [2024-12-02 12:21:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:23,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:23,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:23,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:23,968 INFO L87 Difference]: Start difference. First operand 2729 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:24,058 INFO L93 Difference]: Finished difference Result 6530 states and 11379 transitions. [2024-12-02 12:21:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:24,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 97 [2024-12-02 12:21:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:24,075 INFO L225 Difference]: With dead ends: 6530 [2024-12-02 12:21:24,075 INFO L226 Difference]: Without dead ends: 4312 [2024-12-02 12:21:24,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:24,079 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 47 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 336 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 [2024-12-02 12:21:24,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2024-12-02 12:21:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4302. [2024-12-02 12:21:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4271 states have (on average 1.723015687192695) internal successors, (7359), 4275 states have internal predecessors, (7359), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 7399 transitions. [2024-12-02 12:21:24,237 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 7399 transitions. Word has length 97 [2024-12-02 12:21:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:24,237 INFO L471 AbstractCegarLoop]: Abstraction has 4302 states and 7399 transitions. [2024-12-02 12:21:24,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 7399 transitions. [2024-12-02 12:21:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 12:21:24,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:24,243 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:24,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:21:24,243 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:24,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash -342054053, now seen corresponding path program 1 times [2024-12-02 12:21:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:24,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876440632] [2024-12-02 12:21:24,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:24,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876440632] [2024-12-02 12:21:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876440632] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:24,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:24,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:24,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283333446] [2024-12-02 12:21:24,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:24,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:24,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:24,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:24,290 INFO L87 Difference]: Start difference. First operand 4302 states and 7399 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:24,405 INFO L93 Difference]: Finished difference Result 11201 states and 19439 transitions. [2024-12-02 12:21:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2024-12-02 12:21:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:24,428 INFO L225 Difference]: With dead ends: 11201 [2024-12-02 12:21:24,428 INFO L226 Difference]: Without dead ends: 7501 [2024-12-02 12:21:24,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:24,434 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 45 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:24,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2024-12-02 12:21:24,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7491. [2024-12-02 12:21:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7491 states, 7460 states have (on average 1.7057640750670242) internal successors, (12725), 7464 states have internal predecessors, (12725), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7491 states to 7491 states and 12765 transitions. [2024-12-02 12:21:24,676 INFO L78 Accepts]: Start accepts. Automaton has 7491 states and 12765 transitions. Word has length 98 [2024-12-02 12:21:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:24,677 INFO L471 AbstractCegarLoop]: Abstraction has 7491 states and 12765 transitions. [2024-12-02 12:21:24,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7491 states and 12765 transitions. [2024-12-02 12:21:24,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 12:21:24,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:24,689 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 12:21:24,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:21:24,690 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:24,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1295144917, now seen corresponding path program 1 times [2024-12-02 12:21:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833511408] [2024-12-02 12:21:24,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 12:21:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833511408] [2024-12-02 12:21:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833511408] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586182310] [2024-12-02 12:21:24,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:24,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:24,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:24,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:24,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:21:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:24,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:21:24,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 12:21:25,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586182310] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:25,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:25,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 12:21:25,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724171764] [2024-12-02 12:21:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:25,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:25,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:25,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:25,014 INFO L87 Difference]: Start difference. First operand 7491 states and 12765 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:25,139 INFO L93 Difference]: Finished difference Result 13821 states and 23665 transitions. [2024-12-02 12:21:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:25,139 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2024-12-02 12:21:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:25,164 INFO L225 Difference]: With dead ends: 13821 [2024-12-02 12:21:25,164 INFO L226 Difference]: Without dead ends: 7501 [2024-12-02 12:21:25,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:25,171 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 55 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:25,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 406 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2024-12-02 12:21:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7491. [2024-12-02 12:21:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7491 states, 7460 states have (on average 1.6873994638069705) internal successors, (12588), 7464 states have internal predecessors, (12588), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7491 states to 7491 states and 12628 transitions. [2024-12-02 12:21:25,377 INFO L78 Accepts]: Start accepts. Automaton has 7491 states and 12628 transitions. Word has length 99 [2024-12-02 12:21:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:25,377 INFO L471 AbstractCegarLoop]: Abstraction has 7491 states and 12628 transitions. [2024-12-02 12:21:25,377 INFO L472 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 7491 states and 12628 transitions. [2024-12-02 12:21:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 12:21:25,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:25,387 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:25,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:21:25,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:21:25,587 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:25,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -879200525, now seen corresponding path program 1 times [2024-12-02 12:21:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:25,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998830067] [2024-12-02 12:21:25,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:25,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:25,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998830067] [2024-12-02 12:21:25,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998830067] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:25,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:25,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:25,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491747622] [2024-12-02 12:21:25,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:25,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:25,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:25,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:25,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:25,643 INFO L87 Difference]: Start difference. First operand 7491 states and 12628 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:25,857 INFO L93 Difference]: Finished difference Result 20085 states and 34074 transitions. [2024-12-02 12:21:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:25,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2024-12-02 12:21:25,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:25,896 INFO L225 Difference]: With dead ends: 20085 [2024-12-02 12:21:25,897 INFO L226 Difference]: Without dead ends: 13480 [2024-12-02 12:21:25,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:25,907 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 43 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:25,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2024-12-02 12:21:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 13470. [2024-12-02 12:21:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13470 states, 13439 states have (on average 1.6670883250241832) internal successors, (22404), 13443 states have internal predecessors, (22404), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13470 states to 13470 states and 22444 transitions. [2024-12-02 12:21:26,316 INFO L78 Accepts]: Start accepts. Automaton has 13470 states and 22444 transitions. Word has length 99 [2024-12-02 12:21:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:26,316 INFO L471 AbstractCegarLoop]: Abstraction has 13470 states and 22444 transitions. [2024-12-02 12:21:26,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 13470 states and 22444 transitions. [2024-12-02 12:21:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 12:21:26,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:26,339 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:26,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:21:26,340 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:26,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1539986759, now seen corresponding path program 1 times [2024-12-02 12:21:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136734570] [2024-12-02 12:21:26,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:26,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136734570] [2024-12-02 12:21:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136734570] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:26,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906376022] [2024-12-02 12:21:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:26,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:26,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:26,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:26,400 INFO L87 Difference]: Start difference. First operand 13470 states and 22444 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:26,749 INFO L93 Difference]: Finished difference Result 37105 states and 62064 transitions. [2024-12-02 12:21:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2024-12-02 12:21:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:26,825 INFO L225 Difference]: With dead ends: 37105 [2024-12-02 12:21:26,825 INFO L226 Difference]: Without dead ends: 24874 [2024-12-02 12:21:26,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:26,843 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 41 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 344 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 [2024-12-02 12:21:26,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24874 states. [2024-12-02 12:21:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24874 to 24864. [2024-12-02 12:21:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24864 states, 24833 states have (on average 1.6441428744009987) internal successors, (40829), 24837 states have internal predecessors, (40829), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24864 states to 24864 states and 40869 transitions. [2024-12-02 12:21:27,459 INFO L78 Accepts]: Start accepts. Automaton has 24864 states and 40869 transitions. Word has length 100 [2024-12-02 12:21:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:27,459 INFO L471 AbstractCegarLoop]: Abstraction has 24864 states and 40869 transitions. [2024-12-02 12:21:27,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 24864 states and 40869 transitions. [2024-12-02 12:21:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 12:21:27,488 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:27,488 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:27,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:21:27,488 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:27,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1941780911, now seen corresponding path program 1 times [2024-12-02 12:21:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978616860] [2024-12-02 12:21:27,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 12:21:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978616860] [2024-12-02 12:21:27,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978616860] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297157043] [2024-12-02 12:21:27,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:27,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:27,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:27,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:27,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:21:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:27,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:21:27,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 12:21:27,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:27,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297157043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:27,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:27,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 12:21:27,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807805275] [2024-12-02 12:21:27,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:27,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:27,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:27,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:27,849 INFO L87 Difference]: Start difference. First operand 24864 states and 40869 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:28,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:28,203 INFO L93 Difference]: Finished difference Result 47904 states and 78981 transitions. [2024-12-02 12:21:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:28,204 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2024-12-02 12:21:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:28,279 INFO L225 Difference]: With dead ends: 47904 [2024-12-02 12:21:28,279 INFO L226 Difference]: Without dead ends: 24874 [2024-12-02 12:21:28,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:21:28,302 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 54 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:28,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 398 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24874 states. [2024-12-02 12:21:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24874 to 24864. [2024-12-02 12:21:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24864 states, 24833 states have (on average 1.6230821890226714) internal successors, (40306), 24837 states have internal predecessors, (40306), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2024-12-02 12:21:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24864 states to 24864 states and 40346 transitions. [2024-12-02 12:21:28,818 INFO L78 Accepts]: Start accepts. Automaton has 24864 states and 40346 transitions. Word has length 101 [2024-12-02 12:21:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:28,818 INFO L471 AbstractCegarLoop]: Abstraction has 24864 states and 40346 transitions. [2024-12-02 12:21:28,818 INFO L472 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24864 states and 40346 transitions. [2024-12-02 12:21:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 12:21:28,838 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:28,838 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 12:21:28,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:21:29,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:29,039 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:29,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1234282459, now seen corresponding path program 1 times [2024-12-02 12:21:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:29,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947268122] [2024-12-02 12:21:29,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 12:21:29,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947268122] [2024-12-02 12:21:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947268122] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549261594] [2024-12-02 12:21:29,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:29,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:29,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:29,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:21:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:29,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:21:29,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:21:29,567 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549261594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:29,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:29,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 12:21:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738131931] [2024-12-02 12:21:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:29,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:21:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:29,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:21:29,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:21:29,568 INFO L87 Difference]: Start difference. First operand 24864 states and 40346 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:29,860 INFO L93 Difference]: Finished difference Result 36800 states and 59734 transitions. [2024-12-02 12:21:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:21:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 109 [2024-12-02 12:21:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:29,933 INFO L225 Difference]: With dead ends: 36800 [2024-12-02 12:21:29,933 INFO L226 Difference]: Without dead ends: 24872 [2024-12-02 12:21:29,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:21:29,944 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 138 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:29,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 363 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24872 states. [2024-12-02 12:21:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24872 to 24868. [2024-12-02 12:21:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24868 states, 24837 states have (on average 1.6001529975439868) internal successors, (39743), 24840 states have internal predecessors, (39743), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2024-12-02 12:21:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24868 states to 24868 states and 39781 transitions. [2024-12-02 12:21:30,643 INFO L78 Accepts]: Start accepts. Automaton has 24868 states and 39781 transitions. Word has length 109 [2024-12-02 12:21:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:30,643 INFO L471 AbstractCegarLoop]: Abstraction has 24868 states and 39781 transitions. [2024-12-02 12:21:30,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 12:21:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 24868 states and 39781 transitions. [2024-12-02 12:21:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 12:21:30,670 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:30,670 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:21:30,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:21:30,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 12:21:30,870 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:30,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1142071403, now seen corresponding path program 1 times [2024-12-02 12:21:30,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:30,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585000906] [2024-12-02 12:21:30,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:30,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 12:21:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585000906] [2024-12-02 12:21:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585000906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:30,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:30,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:30,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801889347] [2024-12-02 12:21:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:30,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:21:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:30,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:21:30,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:30,942 INFO L87 Difference]: Start difference. First operand 24868 states and 39781 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:31,630 INFO L93 Difference]: Finished difference Result 70004 states and 112065 transitions. [2024-12-02 12:21:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:21:31,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2024-12-02 12:21:31,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:31,721 INFO L225 Difference]: With dead ends: 70004 [2024-12-02 12:21:31,721 INFO L226 Difference]: Without dead ends: 46808 [2024-12-02 12:21:31,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:21:31,743 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 38 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 342 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 [2024-12-02 12:21:31,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 342 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46808 states. [2024-12-02 12:21:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46808 to 46798. [2024-12-02 12:21:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46798 states, 46767 states have (on average 1.572625996963671) internal successors, (73547), 46770 states have internal predecessors, (73547), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2024-12-02 12:21:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46798 states to 46798 states and 73585 transitions. [2024-12-02 12:21:32,594 INFO L78 Accepts]: Start accepts. Automaton has 46798 states and 73585 transitions. Word has length 101 [2024-12-02 12:21:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:32,594 INFO L471 AbstractCegarLoop]: Abstraction has 46798 states and 73585 transitions. [2024-12-02 12:21:32,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 12:21:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 46798 states and 73585 transitions. [2024-12-02 12:21:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 12:21:32,617 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:32,617 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 12:21:32,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:21:32,618 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:32,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1200825195, now seen corresponding path program 1 times [2024-12-02 12:21:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832302641] [2024-12-02 12:21:32,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 12:21:32,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832302641] [2024-12-02 12:21:32,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832302641] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085208957] [2024-12-02 12:21:32,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:32,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:32,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:32,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:32,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:21:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:33,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 12:21:33,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 12:21:33,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085208957] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:33,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2024-12-02 12:21:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842676712] [2024-12-02 12:21:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:33,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:21:33,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:33,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:21:33,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:21:33,391 INFO L87 Difference]: Start difference. First operand 46798 states and 73585 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-12-02 12:21:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:34,091 INFO L93 Difference]: Finished difference Result 46957 states and 73793 transitions. [2024-12-02 12:21:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:21:34,092 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 110 [2024-12-02 12:21:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:34,155 INFO L225 Difference]: With dead ends: 46957 [2024-12-02 12:21:34,155 INFO L226 Difference]: Without dead ends: 46886 [2024-12-02 12:21:34,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 12:21:34,165 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 353 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:34,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1681 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:21:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46886 states. [2024-12-02 12:21:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46886 to 46873. [2024-12-02 12:21:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46873 states, 46827 states have (on average 1.572255322783864) internal successors, (73624), 46831 states have internal predecessors, (73624), 26 states have call successors, (26), 17 states have call predecessors, (26), 19 states have return successors, (34), 24 states have call predecessors, (34), 24 states have call successors, (34) [2024-12-02 12:21:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46873 states to 46873 states and 73684 transitions. [2024-12-02 12:21:35,205 INFO L78 Accepts]: Start accepts. Automaton has 46873 states and 73684 transitions. Word has length 110 [2024-12-02 12:21:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:35,206 INFO L471 AbstractCegarLoop]: Abstraction has 46873 states and 73684 transitions. [2024-12-02 12:21:35,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-12-02 12:21:35,206 INFO L276 IsEmpty]: Start isEmpty. Operand 46873 states and 73684 transitions. [2024-12-02 12:21:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 12:21:35,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:35,247 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 12:21:35,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:21:35,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 12:21:35,447 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:35,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash -752351532, now seen corresponding path program 1 times [2024-12-02 12:21:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:35,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922635692] [2024-12-02 12:21:35,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 12:21:35,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922635692] [2024-12-02 12:21:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922635692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:35,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:21:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020083221] [2024-12-02 12:21:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:35,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:21:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:35,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:21:35,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:21:35,689 INFO L87 Difference]: Start difference. First operand 46873 states and 73684 transitions. Second operand has 10 states, 8 states have (on average 8.875) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2024-12-02 12:21:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:36,370 INFO L93 Difference]: Finished difference Result 47004 states and 73853 transitions. [2024-12-02 12:21:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:21:36,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.875) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 111 [2024-12-02 12:21:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:36,454 INFO L225 Difference]: With dead ends: 47004 [2024-12-02 12:21:36,454 INFO L226 Difference]: Without dead ends: 46809 [2024-12-02 12:21:36,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:21:36,466 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 30 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:36,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1471 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:21:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46809 states. [2024-12-02 12:21:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46809 to 46800. [2024-12-02 12:21:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46800 states, 46768 states have (on average 1.5725282244269585) internal successors, (73544), 46771 states have internal predecessors, (73544), 19 states have call successors, (19), 13 states have call predecessors, (19), 12 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2024-12-02 12:21:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46800 states to 46800 states and 73582 transitions. [2024-12-02 12:21:37,312 INFO L78 Accepts]: Start accepts. Automaton has 46800 states and 73582 transitions. Word has length 111 [2024-12-02 12:21:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:37,312 INFO L471 AbstractCegarLoop]: Abstraction has 46800 states and 73582 transitions. [2024-12-02 12:21:37,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.875) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2024-12-02 12:21:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 46800 states and 73582 transitions. [2024-12-02 12:21:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 12:21:37,352 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:37,352 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:37,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:21:37,353 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:37,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1847043226, now seen corresponding path program 1 times [2024-12-02 12:21:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:37,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893396203] [2024-12-02 12:21:37,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 12:21:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893396203] [2024-12-02 12:21:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893396203] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891277544] [2024-12-02 12:21:37,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:37,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:37,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:37,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:37,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:21:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:37,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 12:21:37,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:21:38,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891277544] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:38,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:38,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 29 [2024-12-02 12:21:38,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78430740] [2024-12-02 12:21:38,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:38,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:21:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:38,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:21:38,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2024-12-02 12:21:38,304 INFO L87 Difference]: Start difference. First operand 46800 states and 73582 transitions. Second operand has 14 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 6 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2024-12-02 12:21:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:39,128 INFO L93 Difference]: Finished difference Result 46881 states and 73680 transitions. [2024-12-02 12:21:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:21:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 6 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) Word has length 135 [2024-12-02 12:21:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:39,173 INFO L225 Difference]: With dead ends: 46881 [2024-12-02 12:21:39,173 INFO L226 Difference]: Without dead ends: 46830 [2024-12-02 12:21:39,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 12:21:39,179 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 155 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:39,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1274 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:21:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46830 states. [2024-12-02 12:21:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46830 to 46816. [2024-12-02 12:21:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46816 states, 46779 states have (on average 1.5723935954167467) internal successors, (73555), 46785 states have internal predecessors, (73555), 21 states have call successors, (21), 13 states have call predecessors, (21), 15 states have return successors, (26), 17 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-02 12:21:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46816 states to 46816 states and 73602 transitions. [2024-12-02 12:21:39,838 INFO L78 Accepts]: Start accepts. Automaton has 46816 states and 73602 transitions. Word has length 135 [2024-12-02 12:21:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:39,838 INFO L471 AbstractCegarLoop]: Abstraction has 46816 states and 73602 transitions. [2024-12-02 12:21:39,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 6 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2024-12-02 12:21:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 46816 states and 73602 transitions. [2024-12-02 12:21:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 12:21:39,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:39,874 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:39,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:21:40,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 12:21:40,075 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:40,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1292175378, now seen corresponding path program 1 times [2024-12-02 12:21:40,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:40,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741418388] [2024-12-02 12:21:40,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:40,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 12:21:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741418388] [2024-12-02 12:21:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741418388] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953631603] [2024-12-02 12:21:40,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:40,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:40,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:40,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:40,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:21:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:40,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:21:40,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-02 12:21:40,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953631603] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 12:21:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497403065] [2024-12-02 12:21:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:40,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:40,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:40,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:21:40,422 INFO L87 Difference]: Start difference. First operand 46816 states and 73602 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 12:21:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:40,833 INFO L93 Difference]: Finished difference Result 46916 states and 73725 transitions. [2024-12-02 12:21:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:21:40,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 136 [2024-12-02 12:21:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:40,891 INFO L225 Difference]: With dead ends: 46916 [2024-12-02 12:21:40,892 INFO L226 Difference]: Without dead ends: 46818 [2024-12-02 12:21:40,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:21:40,902 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:40,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 585 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:21:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46818 states. [2024-12-02 12:21:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46818 to 46818. [2024-12-02 12:21:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46818 states, 46780 states have (on average 1.5723599828986747) internal successors, (73555), 46787 states have internal predecessors, (73555), 21 states have call successors, (21), 13 states have call predecessors, (21), 16 states have return successors, (27), 17 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-02 12:21:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46818 states to 46818 states and 73603 transitions. [2024-12-02 12:21:41,564 INFO L78 Accepts]: Start accepts. Automaton has 46818 states and 73603 transitions. Word has length 136 [2024-12-02 12:21:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:41,565 INFO L471 AbstractCegarLoop]: Abstraction has 46818 states and 73603 transitions. [2024-12-02 12:21:41,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 12:21:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 46818 states and 73603 transitions. [2024-12-02 12:21:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 12:21:41,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:41,598 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:41,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:21:41,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:41,799 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:41,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2115569072, now seen corresponding path program 1 times [2024-12-02 12:21:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081631493] [2024-12-02 12:21:41,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:41,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 12:21:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081631493] [2024-12-02 12:21:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081631493] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336395] [2024-12-02 12:21:41,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:41,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:41,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:41,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:41,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:21:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:42,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 12:21:42,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 12:21:42,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:21:42,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336395] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:42,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:21:42,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2024-12-02 12:21:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574323419] [2024-12-02 12:21:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:42,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:21:42,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:42,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:21:42,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:21:42,433 INFO L87 Difference]: Start difference. First operand 46818 states and 73603 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 12:21:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:43,398 INFO L93 Difference]: Finished difference Result 46981 states and 73795 transitions. [2024-12-02 12:21:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:21:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2024-12-02 12:21:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:43,465 INFO L225 Difference]: With dead ends: 46981 [2024-12-02 12:21:43,465 INFO L226 Difference]: Without dead ends: 46908 [2024-12-02 12:21:43,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:21:43,478 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 168 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:43,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 762 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:21:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46908 states. [2024-12-02 12:21:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46908 to 46885. [2024-12-02 12:21:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46885 states, 46834 states have (on average 1.5720416791220053) internal successors, (73625), 46841 states have internal predecessors, (73625), 28 states have call successors, (28), 20 states have call predecessors, (28), 22 states have return successors, (34), 23 states have call predecessors, (34), 26 states have call successors, (34) [2024-12-02 12:21:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46885 states to 46885 states and 73687 transitions. [2024-12-02 12:21:44,536 INFO L78 Accepts]: Start accepts. Automaton has 46885 states and 73687 transitions. Word has length 136 [2024-12-02 12:21:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:44,537 INFO L471 AbstractCegarLoop]: Abstraction has 46885 states and 73687 transitions. [2024-12-02 12:21:44,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 12:21:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 46885 states and 73687 transitions. [2024-12-02 12:21:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 12:21:44,580 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:44,580 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:44,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:21:44,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:44,781 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:21:44,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1901292299, now seen corresponding path program 1 times [2024-12-02 12:21:44,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:44,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202592635] [2024-12-02 12:21:44,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:44,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-02 12:21:44,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202592635] [2024-12-02 12:21:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202592635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:44,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:44,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:21:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972149716] [2024-12-02 12:21:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:44,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:21:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:44,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:21:44,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:21:44,927 INFO L87 Difference]: Start difference. First operand 46885 states and 73687 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 12:21:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:45,415 INFO L93 Difference]: Finished difference Result 46918 states and 73721 transitions. [2024-12-02 12:21:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:21:45,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2024-12-02 12:21:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:45,420 INFO L225 Difference]: With dead ends: 46918 [2024-12-02 12:21:45,420 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 12:21:45,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:21:45,440 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 130 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:45,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 360 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:21:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 12:21:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 12:21:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 12:21:45,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-12-02 12:21:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:45,444 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 12:21:45,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 12:21:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 12:21:45,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 12:21:45,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 12:21:45,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:21:45,449 INFO L422 BasicCegarLoop]: Path program histogram: [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] [2024-12-02 12:21:45,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 12:27:30,667 WARN L286 SmtUtils]: Spent 5.75m on a formula simplification. DAG size of input: 2550 DAG size of output: 2534 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-12-02 12:29:18,244 WARN L286 SmtUtils]: Spent 1.73m on a formula simplification. DAG size of input: 2534 DAG size of output: 27 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-12-02 12:29:19,099 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:29:19,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:29:19 BoogieIcfgContainer [2024-12-02 12:29:19,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:29:19,113 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:29:19,113 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:29:19,114 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:29:19,114 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:21:18" (3/4) ... [2024-12-02 12:29:19,116 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:29:19,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure outgoing [2024-12-02 12:29:19,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sendEmail [2024-12-02 12:29:19,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure setEmailFrom [2024-12-02 12:29:19,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure setEmailTo [2024-12-02 12:29:19,122 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure getEmailTo [2024-12-02 12:29:19,122 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isReadable [2024-12-02 12:29:19,122 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure setClientId [2024-12-02 12:29:19,131 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2024-12-02 12:29:19,132 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-12-02 12:29:19,132 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-12-02 12:29:19,133 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 12:29:19,133 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 12:29:19,134 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 12:29:19,241 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:29:19,241 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:29:19,241 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:29:19,242 INFO L158 Benchmark]: Toolchain (without parser) took 482050.92ms. Allocated memory was 142.6MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 116.4MB in the beginning and 1.1GB in the end (delta: -983.9MB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2024-12-02 12:29:19,242 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:29:19,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.32ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 82.0MB in the end (delta: 34.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 12:29:19,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.00ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 78.4MB in the end (delta: 3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:29:19,243 INFO L158 Benchmark]: Boogie Preprocessor took 55.04ms. Allocated memory is still 142.6MB. Free memory was 78.4MB in the beginning and 74.7MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:29:19,243 INFO L158 Benchmark]: RCFGBuilder took 631.53ms. Allocated memory is still 142.6MB. Free memory was 74.7MB in the beginning and 98.3MB in the end (delta: -23.6MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-12-02 12:29:19,243 INFO L158 Benchmark]: TraceAbstraction took 480619.60ms. Allocated memory was 142.6MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 97.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2024-12-02 12:29:19,243 INFO L158 Benchmark]: Witness Printer took 127.74ms. Allocated memory is still 3.2GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:29:19,244 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.32ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 82.0MB in the end (delta: 34.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.00ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 78.4MB in the end (delta: 3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.04ms. Allocated memory is still 142.6MB. Free memory was 78.4MB in the beginning and 74.7MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 631.53ms. Allocated memory is still 142.6MB. Free memory was 74.7MB in the beginning and 98.3MB in the end (delta: -23.6MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * TraceAbstraction took 480619.60ms. Allocated memory was 142.6MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 97.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 127.74ms. Allocated memory is still 3.2GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 48]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] - GenericResultAtLocation [Line: 202]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [202] - GenericResultAtLocation [Line: 211]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [211] - GenericResultAtLocation [Line: 403]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [403] - GenericResultAtLocation [Line: 815]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [815] - GenericResultAtLocation [Line: 1181]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1181] - GenericResultAtLocation [Line: 1201]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1201] - GenericResultAtLocation [Line: 2279]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2279] - GenericResultAtLocation [Line: 2435]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2435] - GenericResultAtLocation [Line: 2452]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2452] - GenericResultAtLocation [Line: 2515]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2515] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 207]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.9s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2228 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2199 mSDsluCounter, 15531 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10655 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1886 IncrementalHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 4876 mSDtfsCounter, 1886 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1397 GetRequests, 1231 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46885occurred in iteration=27, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 1385 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3926 NumberOfCodeBlocks, 3848 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3969 ConstructedInterpolants, 0 QuantifiedInterpolants, 5867 SizeOfPredicates, 12 NumberOfNonLiveVariables, 9444 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 40 InterpolantComputations, 27 PerfectInterpolantSequences, 1445/1488 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 251]: Loop Invariant Derived loop invariant: (((((((((((((1 <= queue_empty) && (op1 == 0)) && (op3 == 0)) && (rjh == 2)) && (__ste_email_to0 <= 0)) && (1 <= op2)) || ((((((1 <= op3) && (op2 == 0)) && (1 <= queue_empty)) && (op1 == 0)) && (rjh == 2)) && (__ste_email_to0 <= 0))) || ((((((op2 == 0) && (op1 == 1)) && (1 <= queue_empty)) && (op3 == 0)) && (rjh == 2)) && (__ste_email_to0 <= 0))) || ((((((1 <= op3) && (op2 == 0)) && (op1 == 1)) && (1 <= queue_empty)) && (rjh == 2)) && (__ste_email_to0 <= 0))) || ((((((op2 == 0) && (1 <= queue_empty)) && (op1 == 0)) && (op3 == 0)) && (rjh == 2)) && (__ste_email_to0 <= 0))) || ((((((1 <= op3) && (1 <= queue_empty)) && (op1 == 0)) && (rjh == 2)) && (__ste_email_to0 <= 0)) && (1 <= op2))) || ((((((1 <= op3) && (op1 == 1)) && (1 <= queue_empty)) && (rjh == 2)) && (__ste_email_to0 <= 0)) && (1 <= op2))) || ((((((op1 == 1) && (1 <= queue_empty)) && (op3 == 0)) && (rjh == 2)) && (__ste_email_to0 <= 0)) && (1 <= op2))) RESULT: Ultimate proved your program to be correct! [2024-12-02 12:29:19,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747d466d-a984-4f50-8903-0ef0a4105767/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE