./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx --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 25d1aac916acb353bef6b5512adabc0f3abdf00fe5619505211974e4efa18990 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:16:47,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:16:47,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:16:47,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:16:47,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:16:47,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:16:47,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:16:47,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:16:47,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:16:47,943 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:16:47,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:16:47,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:16:47,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:16:47,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:16:47,949 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:16:47,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:16:47,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:16:47,950 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:16:47,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:16:47,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:16:47,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:16:47,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:16:47,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:16:47,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:16:47,962 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:16:47,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:16:47,963 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:16:47,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:16:47,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:16:47,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:16:47,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:16:47,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:47,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:16:47,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:16:47,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:16:47,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:16:47,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:16:47,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:16:47,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:16:47,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:16:47,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:16:47,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:16:47,970 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25d1aac916acb353bef6b5512adabc0f3abdf00fe5619505211974e4efa18990 [2023-11-21 22:16:48,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:16:48,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:16:48,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:16:48,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:16:48,329 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:16:48,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c [2023-11-21 22:16:51,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:16:51,851 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:16:51,852 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c [2023-11-21 22:16:51,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/data/2d2106262/1b728abe7d5e4e948aedd5abd7f541d7/FLAGbba8683df [2023-11-21 22:16:51,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/data/2d2106262/1b728abe7d5e4e948aedd5abd7f541d7 [2023-11-21 22:16:51,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:16:51,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:16:51,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:51,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:16:51,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:16:51,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:51" (1/1) ... [2023-11-21 22:16:51,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401c51c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:51, skipping insertion in model container [2023-11-21 22:16:51,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:51" (1/1) ... [2023-11-21 22:16:51,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:16:52,460 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c[40875,40888] [2023-11-21 22:16:52,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:52,664 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:16:52,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2023-11-21 22:16:52,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [66] [2023-11-21 22:16:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [99] [2023-11-21 22:16:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [210] [2023-11-21 22:16:52,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [520] [2023-11-21 22:16:52,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [749] [2023-11-21 22:16:52,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1822] [2023-11-21 22:16:52,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1831] [2023-11-21 22:16:52,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2119] [2023-11-21 22:16:52,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2485] [2023-11-21 22:16:52,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2520] [2023-11-21 22:16:52,788 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c[40875,40888] [2023-11-21 22:16:52,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:52,859 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:16:52,868 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:16:52,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52 WrapperNode [2023-11-21 22:16:52,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:52,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:52,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:16:52,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:16:52,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:52,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,043 INFO L138 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1021 [2023-11-21 22:16:53,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:53,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:16:53,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:16:53,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:16:53,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,077 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,126 INFO L187 HeapSplitter]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4] [2023-11-21 22:16:53,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:16:53,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:16:53,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:16:53,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:16:53,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:53,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:53,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:16:53,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:16:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-21 22:16:53,321 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-21 22:16:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-21 22:16:53,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-21 22:16:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-21 22:16:53,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-21 22:16:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-21 22:16:53,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-21 22:16:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-21 22:16:53,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-21 22:16:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-21 22:16:53,324 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-21 22:16:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-21 22:16:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-21 22:16:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-21 22:16:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-21 22:16:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-21 22:16:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-21 22:16:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-21 22:16:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-21 22:16:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-21 22:16:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-21 22:16:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-21 22:16:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:16:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-21 22:16:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-21 22:16:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-21 22:16:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-21 22:16:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-21 22:16:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-21 22:16:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-21 22:16:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-21 22:16:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-21 22:16:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-21 22:16:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-21 22:16:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-21 22:16:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-21 22:16:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-21 22:16:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:16:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:16:53,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:16:53,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:16:53,333 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-21 22:16:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-21 22:16:53,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:16:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:16:53,630 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:16:53,634 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:16:54,632 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:16:55,271 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:16:55,271 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:16:55,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:55 BoogieIcfgContainer [2023-11-21 22:16:55,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:16:55,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:16:55,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:16:55,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:16:55,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:16:51" (1/3) ... [2023-11-21 22:16:55,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b83a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:55, skipping insertion in model container [2023-11-21 22:16:55,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52" (2/3) ... [2023-11-21 22:16:55,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b83a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:55, skipping insertion in model container [2023-11-21 22:16:55,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:55" (3/3) ... [2023-11-21 22:16:55,285 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2023-11-21 22:16:55,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:16:55,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:16:55,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:55,369 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5446762e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:55,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:16:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-21 22:16:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-21 22:16:55,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:55,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:16:55,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:16:55,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash -187323138, now seen corresponding path program 1 times [2023-11-21 22:16:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116842561] [2023-11-21 22:16:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:16:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:16:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:16:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:16:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:16:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:16:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:16:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:16:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:16:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:16:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:16:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:16:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:16:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:16:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116842561] [2023-11-21 22:16:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116842561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:56,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:56,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:16:56,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388462712] [2023-11-21 22:16:56,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:56,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:56,128 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:16:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:57,210 INFO L93 Difference]: Finished difference Result 264 states and 354 transitions. [2023-11-21 22:16:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:16:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2023-11-21 22:16:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:57,228 INFO L225 Difference]: With dead ends: 264 [2023-11-21 22:16:57,228 INFO L226 Difference]: Without dead ends: 173 [2023-11-21 22:16:57,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:16:57,237 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 196 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:57,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 359 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:16:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-21 22:16:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2023-11-21 22:16:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 22:16:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2023-11-21 22:16:57,353 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 66 [2023-11-21 22:16:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:57,354 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2023-11-21 22:16:57,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:16:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2023-11-21 22:16:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-21 22:16:57,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:57,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:16:57,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:16:57,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:16:57,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1253181783, now seen corresponding path program 1 times [2023-11-21 22:16:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838499139] [2023-11-21 22:16:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:57,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:16:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:16:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:16:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:16:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:16:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:16:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:16:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:16:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 22:16:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:16:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:16:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-21 22:16:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:16:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:16:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838499139] [2023-11-21 22:16:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838499139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:57,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:57,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:16:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117631802] [2023-11-21 22:16:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:57,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:16:57,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:16:57,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:16:57,711 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:16:58,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:58,590 INFO L93 Difference]: Finished difference Result 260 states and 341 transitions. [2023-11-21 22:16:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:16:58,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2023-11-21 22:16:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:58,594 INFO L225 Difference]: With dead ends: 260 [2023-11-21 22:16:58,594 INFO L226 Difference]: Without dead ends: 175 [2023-11-21 22:16:58,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:16:58,598 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 196 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:58,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 430 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:16:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-21 22:16:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2023-11-21 22:16:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.3) internal successors, (130), 103 states have internal predecessors, (130), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 22:16:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 229 transitions. [2023-11-21 22:16:58,633 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 229 transitions. Word has length 67 [2023-11-21 22:16:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:58,634 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 229 transitions. [2023-11-21 22:16:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:16:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 229 transitions. [2023-11-21 22:16:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-21 22:16:58,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:58,638 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:16:58,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:16:58,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -612906408, now seen corresponding path program 1 times [2023-11-21 22:16:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023322017] [2023-11-21 22:16:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:16:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:16:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:16:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:16:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:16:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:16:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:16:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:16:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:16:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:16:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:16:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:16:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:16:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:16:58,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:58,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023322017] [2023-11-21 22:16:58,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023322017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:58,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:58,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:16:58,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534742896] [2023-11-21 22:16:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:58,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:16:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:16:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:16:58,877 INFO L87 Difference]: Start difference. First operand 170 states and 229 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:16:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:59,849 INFO L93 Difference]: Finished difference Result 375 states and 524 transitions. [2023-11-21 22:16:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:16:59,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2023-11-21 22:16:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:59,864 INFO L225 Difference]: With dead ends: 375 [2023-11-21 22:16:59,864 INFO L226 Difference]: Without dead ends: 223 [2023-11-21 22:16:59,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:16:59,873 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 253 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:59,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 448 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:16:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-21 22:16:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 213. [2023-11-21 22:16:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 135 states have internal predecessors, (183), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-21 22:16:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 304 transitions. [2023-11-21 22:16:59,935 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 304 transitions. Word has length 72 [2023-11-21 22:16:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:59,944 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 304 transitions. [2023-11-21 22:16:59,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:16:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 304 transitions. [2023-11-21 22:16:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-21 22:16:59,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:59,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:59,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:16:59,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:16:59,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1763626433, now seen corresponding path program 1 times [2023-11-21 22:16:59,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:59,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730846901] [2023-11-21 22:16:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:59,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:17:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 22:17:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:17:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:17:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:17:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:17:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730846901] [2023-11-21 22:17:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730846901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456103242] [2023-11-21 22:17:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:00,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:00,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:00,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:17:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:17:00,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:00,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:00,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456103242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:00,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:17:00,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-11-21 22:17:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86163958] [2023-11-21 22:17:00,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:00,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:17:00,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:17:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:17:00,725 INFO L87 Difference]: Start difference. First operand 213 states and 304 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 22:17:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,985 INFO L93 Difference]: Finished difference Result 553 states and 843 transitions. [2023-11-21 22:17:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:17:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 73 [2023-11-21 22:17:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,990 INFO L225 Difference]: With dead ends: 553 [2023-11-21 22:17:01,991 INFO L226 Difference]: Without dead ends: 468 [2023-11-21 22:17:01,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:17:01,994 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 406 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:01,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 876 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:17:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-11-21 22:17:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 448. [2023-11-21 22:17:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 303 states have (on average 1.5148514851485149) internal successors, (459), 306 states have internal predecessors, (459), 125 states have call successors, (125), 19 states have call predecessors, (125), 19 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-21 22:17:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 708 transitions. [2023-11-21 22:17:02,044 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 708 transitions. Word has length 73 [2023-11-21 22:17:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:02,045 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 708 transitions. [2023-11-21 22:17:02,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 22:17:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 708 transitions. [2023-11-21 22:17:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-21 22:17:02,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:02,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:02,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:17:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f64986-8ed6-4fdc-887a-af7c9c8d3ceb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:02,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:02,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1441831548, now seen corresponding path program 1 times [2023-11-21 22:17:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881659523] [2023-11-21 22:17:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 22:17:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:17:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:17:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:17:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:17:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-21 22:17:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881659523] [2023-11-21 22:17:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881659523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:02,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966204865] [2023-11-21 22:17:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:02,447 INFO L87 Difference]: Start difference. First operand 448 states and 708 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:03,372 INFO L93 Difference]: Finished difference Result 1106 states and 1781 transitions. [2023-11-21 22:17:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:03,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 79 [2023-11-21 22:17:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:03,378 INFO L225 Difference]: With dead ends: 1106 [2023-11-21 22:17:03,379 INFO L226 Difference]: Without dead ends: 690 [2023-11-21 22:17:03,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:03,382 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 251 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:03,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 460 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-11-21 22:17:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 680. [2023-11-21 22:17:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 471 states have (on average 1.5329087048832273) internal successors, (722), 474 states have internal predecessors, (722), 189 states have call successors, (189), 19 states have call predecessors, (189), 19 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2023-11-21 22:17:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1099 transitions. [2023-11-21 22:17:03,438 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1099 transitions. Word has length 79 [2023-11-21 22:17:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:03,438 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1099 transitions. [2023-11-21 22:17:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1099 transitions. [2023-11-21 22:17:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 22:17:03,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:03,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:17:03,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:03,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1457993912, now seen corresponding path program 1 times [2023-11-21 22:17:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:03,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569921847] [2023-11-21 22:17:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-21 22:17:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:17:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 22:17:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-21 22:17:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:17:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-21 22:17:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:03,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569921847] [2023-11-21 22:17:03,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569921847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:03,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:03,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:03,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322995955] [2023-11-21 22:17:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:03,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:03,622 INFO L87 Difference]: Start difference. First operand 680 states and 1099 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:04,572 INFO L93 Difference]: Finished difference Result 1663 states and 2724 transitions. [2023-11-21 22:17:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:04,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 80 [2023-11-21 22:17:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:04,582 INFO L225 Difference]: With dead ends: 1663 [2023-11-21 22:17:04,582 INFO L226 Difference]: Without dead ends: 1045 [2023-11-21 22:17:04,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:04,586 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 249 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:04,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 427 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-11-21 22:17:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1035. [2023-11-21 22:17:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 731 states have (on average 1.5403556771545828) internal successors, (1126), 734 states have internal predecessors, (1126), 284 states have call successors, (284), 19 states have call predecessors, (284), 19 states have return successors, (283), 283 states have call predecessors, (283), 283 states have call successors, (283) [2023-11-21 22:17:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1693 transitions. [2023-11-21 22:17:04,665 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1693 transitions. Word has length 80 [2023-11-21 22:17:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:04,666 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1693 transitions. [2023-11-21 22:17:04,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1693 transitions. [2023-11-21 22:17:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-21 22:17:04,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:04,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:04,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:17:04,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:04,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 850779594, now seen corresponding path program 1 times [2023-11-21 22:17:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916286688] [2023-11-21 22:17:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:04,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:17:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 22:17:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:17:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-21 22:17:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:17:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 22:17:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916286688] [2023-11-21 22:17:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916286688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:04,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:04,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:04,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202831697] [2023-11-21 22:17:04,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:04,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:04,851 INFO L87 Difference]: Start difference. First operand 1035 states and 1693 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:05,876 INFO L93 Difference]: Finished difference Result 2461 states and 4068 transitions. [2023-11-21 22:17:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:05,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2023-11-21 22:17:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:05,893 INFO L225 Difference]: With dead ends: 2461 [2023-11-21 22:17:05,894 INFO L226 Difference]: Without dead ends: 1568 [2023-11-21 22:17:05,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:05,898 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 247 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:05,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 420 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-11-21 22:17:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1558. [2023-11-21 22:17:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1131 states have (on average 1.5455349248452697) internal successors, (1748), 1134 states have internal predecessors, (1748), 407 states have call successors, (407), 19 states have call predecessors, (407), 19 states have return successors, (406), 406 states have call predecessors, (406), 406 states have call successors, (406) [2023-11-21 22:17:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2561 transitions. [2023-11-21 22:17:06,007 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2561 transitions. Word has length 81 [2023-11-21 22:17:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:06,008 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2561 transitions. [2023-11-21 22:17:06,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2561 transitions. [2023-11-21 22:17:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-21 22:17:06,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:06,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:06,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:17:06,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:06,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:06,018 INFO L85 PathProgramCache]: Analyzing trace with hash -4099239, now seen corresponding path program 1 times [2023-11-21 22:17:06,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:06,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872260685] [2023-11-21 22:17:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:06,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:17:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:17:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:17:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:17:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-21 22:17:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-21 22:17:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872260685] [2023-11-21 22:17:06,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872260685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:06,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:06,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904117883] [2023-11-21 22:17:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:06,178 INFO L87 Difference]: Start difference. First operand 1558 states and 2561 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:07,162 INFO L93 Difference]: Finished difference Result 3671 states and 6096 transitions. [2023-11-21 22:17:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:07,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-11-21 22:17:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:07,183 INFO L225 Difference]: With dead ends: 3671 [2023-11-21 22:17:07,183 INFO L226 Difference]: Without dead ends: 2392 [2023-11-21 22:17:07,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:07,189 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 245 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:07,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 420 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2023-11-21 22:17:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2382. [2023-11-21 22:17:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1776 states have (on average 1.5484234234234233) internal successors, (2750), 1779 states have internal predecessors, (2750), 586 states have call successors, (586), 19 states have call predecessors, (586), 19 states have return successors, (585), 585 states have call predecessors, (585), 585 states have call successors, (585) [2023-11-21 22:17:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3921 transitions. [2023-11-21 22:17:07,366 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3921 transitions. Word has length 82 [2023-11-21 22:17:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:07,366 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3921 transitions. [2023-11-21 22:17:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3921 transitions. [2023-11-21 22:17:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-21 22:17:07,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:07,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:07,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:17:07,378 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:07,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash 120442054, now seen corresponding path program 1 times [2023-11-21 22:17:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:07,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765254990] [2023-11-21 22:17:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:17:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:17:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:17:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:17:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 22:17:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:17:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765254990] [2023-11-21 22:17:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765254990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:07,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662248593] [2023-11-21 22:17:07,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:07,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:07,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:07,536 INFO L87 Difference]: Start difference. First operand 2382 states and 3921 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:08,547 INFO L93 Difference]: Finished difference Result 5882 states and 9768 transitions. [2023-11-21 22:17:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:08,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2023-11-21 22:17:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:08,578 INFO L225 Difference]: With dead ends: 5882 [2023-11-21 22:17:08,579 INFO L226 Difference]: Without dead ends: 3922 [2023-11-21 22:17:08,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:08,587 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 243 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:08,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 446 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2023-11-21 22:17:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3912. [2023-11-21 22:17:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 2930 states have (on average 1.5375426621160408) internal successors, (4505), 2933 states have internal predecessors, (4505), 962 states have call successors, (962), 19 states have call predecessors, (962), 19 states have return successors, (961), 961 states have call predecessors, (961), 961 states have call successors, (961) [2023-11-21 22:17:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 6428 transitions. [2023-11-21 22:17:08,917 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 6428 transitions. Word has length 83 [2023-11-21 22:17:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:08,918 INFO L495 AbstractCegarLoop]: Abstraction has 3912 states and 6428 transitions. [2023-11-21 22:17:08,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 6428 transitions. [2023-11-21 22:17:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-21 22:17:08,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:08,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:17:08,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:08,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1671606179, now seen corresponding path program 1 times [2023-11-21 22:17:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:08,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71321413] [2023-11-21 22:17:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 22:17:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:17:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-21 22:17:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:17:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-21 22:17:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 22:17:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71321413] [2023-11-21 22:17:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71321413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:09,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464535493] [2023-11-21 22:17:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:09,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:09,089 INFO L87 Difference]: Start difference. First operand 3912 states and 6428 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:10,265 INFO L93 Difference]: Finished difference Result 9743 states and 16165 transitions. [2023-11-21 22:17:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2023-11-21 22:17:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:10,320 INFO L225 Difference]: With dead ends: 9743 [2023-11-21 22:17:10,320 INFO L226 Difference]: Without dead ends: 6519 [2023-11-21 22:17:10,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:10,334 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 241 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:10,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 421 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2023-11-21 22:17:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 6509. [2023-11-21 22:17:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6509 states, 4921 states have (on average 1.5334281650071124) internal successors, (7546), 4924 states have internal predecessors, (7546), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 19 states have return successors, (1567), 1567 states have call predecessors, (1567), 1567 states have call successors, (1567) [2023-11-21 22:17:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 10681 transitions. [2023-11-21 22:17:10,863 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 10681 transitions. Word has length 84 [2023-11-21 22:17:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:10,864 INFO L495 AbstractCegarLoop]: Abstraction has 6509 states and 10681 transitions. [2023-11-21 22:17:10,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 10681 transitions. [2023-11-21 22:17:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 22:17:10,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:10,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:10,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:17:10,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:10,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash -405679500, now seen corresponding path program 1 times [2023-11-21 22:17:10,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:10,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822646318] [2023-11-21 22:17:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:17:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:17:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:17:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:17:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-21 22:17:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 22:17:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:11,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:11,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822646318] [2023-11-21 22:17:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822646318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:11,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:11,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921544193] [2023-11-21 22:17:11,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:11,049 INFO L87 Difference]: Start difference. First operand 6509 states and 10681 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:12,322 INFO L93 Difference]: Finished difference Result 16995 states and 28083 transitions. [2023-11-21 22:17:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2023-11-21 22:17:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:12,467 INFO L225 Difference]: With dead ends: 16995 [2023-11-21 22:17:12,467 INFO L226 Difference]: Without dead ends: 11463 [2023-11-21 22:17:12,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:12,484 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 239 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:12,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 473 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11463 states. [2023-11-21 22:17:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11463 to 11453. [2023-11-21 22:17:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 8662 states have (on average 1.5200877395520664) internal successors, (13167), 8665 states have internal predecessors, (13167), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 19 states have return successors, (2770), 2770 states have call predecessors, (2770), 2770 states have call successors, (2770) [2023-11-21 22:17:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 18708 transitions. [2023-11-21 22:17:13,329 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 18708 transitions. Word has length 85 [2023-11-21 22:17:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:13,330 INFO L495 AbstractCegarLoop]: Abstraction has 11453 states and 18708 transitions. [2023-11-21 22:17:13,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 18708 transitions. [2023-11-21 22:17:13,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-21 22:17:13,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:13,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:17:13,361 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:13,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1418232862, now seen corresponding path program 1 times [2023-11-21 22:17:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381675566] [2023-11-21 22:17:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:17:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 22:17:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-21 22:17:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-21 22:17:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-21 22:17:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-21 22:17:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:13,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:13,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381675566] [2023-11-21 22:17:13,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381675566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:13,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:13,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632231709] [2023-11-21 22:17:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:13,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:13,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:13,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:13,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:13,556 INFO L87 Difference]: Start difference. First operand 11453 states and 18708 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:15,429 INFO L93 Difference]: Finished difference Result 30314 states and 49849 transitions. [2023-11-21 22:17:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2023-11-21 22:17:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:15,593 INFO L225 Difference]: With dead ends: 30314 [2023-11-21 22:17:15,593 INFO L226 Difference]: Without dead ends: 20290 [2023-11-21 22:17:15,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:15,629 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 237 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:15,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 421 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:17:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20290 states. [2023-11-21 22:17:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20290 to 20280. [2023-11-21 22:17:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 15450 states have (on average 1.5123624595469256) internal successors, (23366), 15453 states have internal predecessors, (23366), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 19 states have return successors, (4809), 4809 states have call predecessors, (4809), 4809 states have call successors, (4809) [2023-11-21 22:17:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 32985 transitions. [2023-11-21 22:17:17,123 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 32985 transitions. Word has length 86 [2023-11-21 22:17:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:17,124 INFO L495 AbstractCegarLoop]: Abstraction has 20280 states and 32985 transitions. [2023-11-21 22:17:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 32985 transitions. [2023-11-21 22:17:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 22:17:17,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:17,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 22:17:17,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:17:17,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:17,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -995771754, now seen corresponding path program 1 times [2023-11-21 22:17:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:17,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417455843] [2023-11-21 22:17:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:17:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:17:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-21 22:17:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 22:17:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-21 22:17:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-21 22:17:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:17,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417455843] [2023-11-21 22:17:17,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417455843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:17,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:17,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:17,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581488763] [2023-11-21 22:17:17,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:17,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:17,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:17,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:17,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:17,335 INFO L87 Difference]: Start difference. First operand 20280 states and 32985 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:19,966 INFO L93 Difference]: Finished difference Result 55026 states and 89941 transitions. [2023-11-21 22:17:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:19,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2023-11-21 22:17:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:20,116 INFO L225 Difference]: With dead ends: 55026 [2023-11-21 22:17:20,116 INFO L226 Difference]: Without dead ends: 36730 [2023-11-21 22:17:20,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:20,169 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 235 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:20,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 427 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:17:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36730 states. [2023-11-21 22:17:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36730 to 36720. [2023-11-21 22:17:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36720 states, 28175 states have (on average 1.5016858917480036) internal successors, (42310), 28178 states have internal predecessors, (42310), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 19 states have return successors, (8524), 8524 states have call predecessors, (8524), 8524 states have call successors, (8524) [2023-11-21 22:17:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36720 states to 36720 states and 59359 transitions. [2023-11-21 22:17:23,236 INFO L78 Accepts]: Start accepts. Automaton has 36720 states and 59359 transitions. Word has length 87 [2023-11-21 22:17:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:23,249 INFO L495 AbstractCegarLoop]: Abstraction has 36720 states and 59359 transitions. [2023-11-21 22:17:23,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 36720 states and 59359 transitions. [2023-11-21 22:17:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:17:23,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:23,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:23,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:17:23,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:23,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash -626943618, now seen corresponding path program 1 times [2023-11-21 22:17:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:23,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742910743] [2023-11-21 22:17:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:23,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:17:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:17:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:17:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-21 22:17:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 22:17:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-21 22:17:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:23,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742910743] [2023-11-21 22:17:23,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742910743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:23,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:23,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668123129] [2023-11-21 22:17:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:23,452 INFO L87 Difference]: Start difference. First operand 36720 states and 59359 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:26,639 INFO L93 Difference]: Finished difference Result 67643 states and 109522 transitions. [2023-11-21 22:17:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 88 [2023-11-21 22:17:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:26,911 INFO L225 Difference]: With dead ends: 67643 [2023-11-21 22:17:26,912 INFO L226 Difference]: Without dead ends: 67558 [2023-11-21 22:17:26,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:26,929 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 233 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:26,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 421 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:17:26,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67558 states. [2023-11-21 22:17:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67558 to 67548. [2023-11-21 22:17:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67548 states, 52204 states have (on average 1.4877404030342503) internal successors, (77666), 52207 states have internal predecessors, (77666), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 19 states have return successors, (15323), 15323 states have call predecessors, (15323), 15323 states have call successors, (15323) [2023-11-21 22:17:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67548 states to 67548 states and 108313 transitions. [2023-11-21 22:17:30,485 INFO L78 Accepts]: Start accepts. Automaton has 67548 states and 108313 transitions. Word has length 88 [2023-11-21 22:17:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:30,486 INFO L495 AbstractCegarLoop]: Abstraction has 67548 states and 108313 transitions. [2023-11-21 22:17:30,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:17:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 67548 states and 108313 transitions. [2023-11-21 22:17:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:17:30,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:30,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:30,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:17:30,536 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:17:30,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1467860395, now seen corresponding path program 1 times [2023-11-21 22:17:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:30,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985967658] [2023-11-21 22:17:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:17:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:17:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:17:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:17:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:17:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 22:17:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:17:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:17:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-21 22:17:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-21 22:17:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-21 22:17:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:17:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:17:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985967658] [2023-11-21 22:17:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985967658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:32,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:32,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-21 22:17:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626323724] [2023-11-21 22:17:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:32,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-21 22:17:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-21 22:17:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:17:32,456 INFO L87 Difference]: Start difference. First operand 67548 states and 108313 transitions. Second operand has 22 states, 17 states have (on average 3.235294117647059) internal successors, (55), 15 states have internal predecessors, (55), 8 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13)