./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:03,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:03,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:45:03,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:03,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:03,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:03,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:03,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:03,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:03,485 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:03,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:03,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:03,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:03,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:03,488 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:03,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:03,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:03,490 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:03,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:03,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:03,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:03,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:03,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:03,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:03,506 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:03,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:03,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:03,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:03,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:03,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:03,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:03,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:03,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:03,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:03,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:03,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:03,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:03,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:03,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:03,512 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:03,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:03,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:03,514 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_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 [2023-11-26 10:45:03,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:03,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:03,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:03,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:03,865 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:03,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2023-11-26 10:45:07,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:07,509 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:07,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2023-11-26 10:45:07,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/data/a70f7a6df/2b60238e843043a19f524c5cd21804d7/FLAG824814c26 [2023-11-26 10:45:07,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/data/a70f7a6df/2b60238e843043a19f524c5cd21804d7 [2023-11-26 10:45:07,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:07,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:07,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:07,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:07,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:07,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:07" (1/1) ... [2023-11-26 10:45:07,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4a8ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:07, skipping insertion in model container [2023-11-26 10:45:07,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:07" (1/1) ... [2023-11-26 10:45:07,687 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:08,402 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_3fc1040b-26ab-4259-ad74-16fee3662694/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2023-11-26 10:45:08,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:08,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:08,480 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-26 10:45:08,482 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [363] [2023-11-26 10:45:08,488 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [398] [2023-11-26 10:45:08,488 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [810] [2023-11-26 10:45:08,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1882] [2023-11-26 10:45:08,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [2098] [2023-11-26 10:45:08,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2130] [2023-11-26 10:45:08,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2496] [2023-11-26 10:45:08,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2513] [2023-11-26 10:45:08,497 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2869] [2023-11-26 10:45:08,497 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2878] [2023-11-26 10:45:08,641 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_3fc1040b-26ab-4259-ad74-16fee3662694/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2023-11-26 10:45:08,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:08,688 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:08,695 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:08,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08 WrapperNode [2023-11-26 10:45:08,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:08,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:08,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:08,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:08,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,818 INFO L138 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1032 [2023-11-26 10:45:08,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:08,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:08,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:08,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:08,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,913 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-26 10:45:08,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:08,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:09,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:09,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:09,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:09,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:09,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:09,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (1/1) ... [2023-11-26 10:45:09,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:09,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:09,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-26 10:45:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-26 10:45:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-26 10:45:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-26 10:45:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-26 10:45:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-26 10:45:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-26 10:45:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-26 10:45:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-26 10:45:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-26 10:45:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-26 10:45:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-26 10:45:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-26 10:45:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-26 10:45:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-26 10:45:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-26 10:45:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-26 10:45:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-26 10:45:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-26 10:45:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-26 10:45:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-26 10:45:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-26 10:45:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-26 10:45:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-26 10:45:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-26 10:45:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-26 10:45:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-26 10:45:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-26 10:45:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-26 10:45:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-26 10:45:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-26 10:45:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-26 10:45:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-26 10:45:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-26 10:45:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-26 10:45:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-11-26 10:45:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-11-26 10:45:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-26 10:45:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-26 10:45:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-26 10:45:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-26 10:45:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-26 10:45:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-26 10:45:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-26 10:45:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-26 10:45:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-26 10:45:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-26 10:45:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:45:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-26 10:45:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-26 10:45:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:09,374 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:09,377 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:10,338 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:10,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:10,431 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:45:10,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:10 BoogieIcfgContainer [2023-11-26 10:45:10,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:10,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:10,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:10,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:10,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:07" (1/3) ... [2023-11-26 10:45:10,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fee8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:10, skipping insertion in model container [2023-11-26 10:45:10,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:08" (2/3) ... [2023-11-26 10:45:10,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fee8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:10, skipping insertion in model container [2023-11-26 10:45:10,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:10" (3/3) ... [2023-11-26 10:45:10,444 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2023-11-26 10:45:10,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:10,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:45:10,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:10,532 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;@56095d54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:10,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:45:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 257 states have (on average 1.556420233463035) internal successors, (400), 261 states have internal predecessors, (400), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-26 10:45:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-26 10:45:10,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:10,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:10,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:10,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1559887207, now seen corresponding path program 1 times [2023-11-26 10:45:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:10,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284250238] [2023-11-26 10:45:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:45:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:45:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:45:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:45:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:45:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:45:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:45:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:45:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:45:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:45:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:45:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:45:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:45:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:45:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:45:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-26 10:45:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284250238] [2023-11-26 10:45:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284250238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:11,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565708201] [2023-11-26 10:45:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:11,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:11,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:45:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:12,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:45:12,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 10:45:12,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:12,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565708201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:12,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-26 10:45:12,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870138482] [2023-11-26 10:45:12,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:12,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:45:12,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:45:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:12,428 INFO L87 Difference]: Start difference. First operand has 344 states, 257 states have (on average 1.556420233463035) internal successors, (400), 261 states have internal predecessors, (400), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:12,565 INFO L93 Difference]: Finished difference Result 543 states and 807 transitions. [2023-11-26 10:45:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:45:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 136 [2023-11-26 10:45:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:12,585 INFO L225 Difference]: With dead ends: 543 [2023-11-26 10:45:12,586 INFO L226 Difference]: Without dead ends: 341 [2023-11-26 10:45:12,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:12,596 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:12,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:12,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-26 10:45:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2023-11-26 10:45:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 255 states have (on average 1.5411764705882354) internal successors, (393), 258 states have internal predecessors, (393), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:45:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 514 transitions. [2023-11-26 10:45:12,687 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 514 transitions. Word has length 136 [2023-11-26 10:45:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:12,690 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 514 transitions. [2023-11-26 10:45:12,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 514 transitions. [2023-11-26 10:45:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-26 10:45:12,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:12,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:12,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:12,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:45:12,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:12,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1770963714, now seen corresponding path program 1 times [2023-11-26 10:45:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:12,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307934756] [2023-11-26 10:45:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:12,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:45:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:45:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:45:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 10:45:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:45:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 10:45:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:45:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:45:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:45:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:45:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:45:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:45:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:45:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:45:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:45:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-26 10:45:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307934756] [2023-11-26 10:45:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307934756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:13,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688296740] [2023-11-26 10:45:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:13,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:13,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:13,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:13,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:45:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:45:13,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 10:45:13,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:13,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688296740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-26 10:45:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276531327] [2023-11-26 10:45:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:13,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:13,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:45:13,862 INFO L87 Difference]: Start difference. First operand 341 states and 514 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:13,982 INFO L93 Difference]: Finished difference Result 539 states and 794 transitions. [2023-11-26 10:45:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 137 [2023-11-26 10:45:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:13,995 INFO L225 Difference]: With dead ends: 539 [2023-11-26 10:45:13,995 INFO L226 Difference]: Without dead ends: 343 [2023-11-26 10:45:14,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:45:14,002 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 0 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:14,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 997 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:14,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-26 10:45:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-26 10:45:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 257 states have (on average 1.5369649805447472) internal successors, (395), 260 states have internal predecessors, (395), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:45:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 516 transitions. [2023-11-26 10:45:14,047 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 516 transitions. Word has length 137 [2023-11-26 10:45:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:14,048 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 516 transitions. [2023-11-26 10:45:14,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 516 transitions. [2023-11-26 10:45:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:45:14,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:14,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:14,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:14,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:14,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:14,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 413371064, now seen corresponding path program 1 times [2023-11-26 10:45:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:14,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945610283] [2023-11-26 10:45:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:14,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:45:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:45:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:45:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:45:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:45:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:45:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:45:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:45:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:45:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:45:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:45:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 10:45:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:45:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:45:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 10:45:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:45:14,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945610283] [2023-11-26 10:45:14,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945610283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902951546] [2023-11-26 10:45:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:14,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:14,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:14,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:14,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:45:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:15,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 10:45:15,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:15,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902951546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:15,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:15,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-26 10:45:15,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85139215] [2023-11-26 10:45:15,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:15,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:15,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:15,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:15,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:45:15,055 INFO L87 Difference]: Start difference. First operand 343 states and 516 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:15,139 INFO L93 Difference]: Finished difference Result 716 states and 1091 transitions. [2023-11-26 10:45:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:15,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2023-11-26 10:45:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:15,144 INFO L225 Difference]: With dead ends: 716 [2023-11-26 10:45:15,144 INFO L226 Difference]: Without dead ends: 395 [2023-11-26 10:45:15,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:45:15,147 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 102 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:15,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 965 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:45:15,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-26 10:45:15,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 390. [2023-11-26 10:45:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 293 states have (on average 1.552901023890785) internal successors, (455), 296 states have internal predecessors, (455), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-26 10:45:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 598 transitions. [2023-11-26 10:45:15,189 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 598 transitions. Word has length 142 [2023-11-26 10:45:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:15,190 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 598 transitions. [2023-11-26 10:45:15,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 598 transitions. [2023-11-26 10:45:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-26 10:45:15,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:15,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:15,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 10:45:15,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:15,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash 122793555, now seen corresponding path program 1 times [2023-11-26 10:45:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806687967] [2023-11-26 10:45:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:45:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:45:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:45:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:45:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 10:45:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:45:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:45:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:45:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:45:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:45:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:45:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:45:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:45:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:45:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 10:45:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:45:15,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:15,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806687967] [2023-11-26 10:45:15,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806687967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:15,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385536375] [2023-11-26 10:45:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:15,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:15,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:15,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:15,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:45:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:45:16,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:45:16,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385536375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:16,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:16,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-26 10:45:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453553659] [2023-11-26 10:45:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:45:16,312 INFO L87 Difference]: Start difference. First operand 390 states and 598 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:16,454 INFO L93 Difference]: Finished difference Result 775 states and 1190 transitions. [2023-11-26 10:45:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:16,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 143 [2023-11-26 10:45:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:16,459 INFO L225 Difference]: With dead ends: 775 [2023-11-26 10:45:16,459 INFO L226 Difference]: Without dead ends: 392 [2023-11-26 10:45:16,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:16,463 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 8 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:16,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1949 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-26 10:45:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2023-11-26 10:45:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 294 states have (on average 1.5510204081632653) internal successors, (456), 298 states have internal predecessors, (456), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2023-11-26 10:45:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 601 transitions. [2023-11-26 10:45:16,504 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 601 transitions. Word has length 143 [2023-11-26 10:45:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:16,505 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 601 transitions. [2023-11-26 10:45:16,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 601 transitions. [2023-11-26 10:45:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-26 10:45:16,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:16,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:16,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:16,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:16,717 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:16,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -931012614, now seen corresponding path program 1 times [2023-11-26 10:45:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:16,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611002103] [2023-11-26 10:45:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:45:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:45:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:45:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:45:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:45:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:45:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:45:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:45:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 10:45:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:45:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:45:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:45:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:45:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-26 10:45:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-26 10:45:17,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:17,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611002103] [2023-11-26 10:45:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611002103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:17,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537145642] [2023-11-26 10:45:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:17,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:17,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:17,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:17,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:45:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:45:17,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:45:17,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:17,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537145642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:17,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:17,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-26 10:45:17,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807936633] [2023-11-26 10:45:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:17,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:45:17,486 INFO L87 Difference]: Start difference. First operand 392 states and 601 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:17,651 INFO L93 Difference]: Finished difference Result 777 states and 1195 transitions. [2023-11-26 10:45:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 144 [2023-11-26 10:45:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:17,655 INFO L225 Difference]: With dead ends: 777 [2023-11-26 10:45:17,655 INFO L226 Difference]: Without dead ends: 394 [2023-11-26 10:45:17,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:45:17,658 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 8 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:17,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1935 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-26 10:45:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2023-11-26 10:45:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 295 states have (on average 1.5491525423728814) internal successors, (457), 300 states have internal predecessors, (457), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2023-11-26 10:45:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 607 transitions. [2023-11-26 10:45:17,682 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 607 transitions. Word has length 144 [2023-11-26 10:45:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:17,682 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 607 transitions. [2023-11-26 10:45:17,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 607 transitions. [2023-11-26 10:45:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 10:45:17,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:17,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:17,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:17,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:17,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1061444884, now seen corresponding path program 1 times [2023-11-26 10:45:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689034630] [2023-11-26 10:45:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 10:45:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:45:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 10:45:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:45:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:45:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:45:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:45:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:45:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:45:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:45:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-26 10:45:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-26 10:45:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-26 10:45:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:45:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689034630] [2023-11-26 10:45:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689034630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:18,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:45:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774991439] [2023-11-26 10:45:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:18,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:18,246 INFO L87 Difference]: Start difference. First operand 394 states and 607 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:21,074 INFO L93 Difference]: Finished difference Result 912 states and 1417 transitions. [2023-11-26 10:45:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:45:21,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-11-26 10:45:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:21,080 INFO L225 Difference]: With dead ends: 912 [2023-11-26 10:45:21,080 INFO L226 Difference]: Without dead ends: 537 [2023-11-26 10:45:21,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:45:21,083 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1176 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:21,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 963 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 10:45:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-11-26 10:45:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 394. [2023-11-26 10:45:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 295 states have (on average 1.5491525423728814) internal successors, (457), 300 states have internal predecessors, (457), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2023-11-26 10:45:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 606 transitions. [2023-11-26 10:45:21,153 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 606 transitions. Word has length 145 [2023-11-26 10:45:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:21,155 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 606 transitions. [2023-11-26 10:45:21,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 606 transitions. [2023-11-26 10:45:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-26 10:45:21,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:21,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:45:21,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:21,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -969367015, now seen corresponding path program 2 times [2023-11-26 10:45:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825420491] [2023-11-26 10:45:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:45:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:45:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 10:45:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:45:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:45:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:45:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:45:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:45:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:45:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:45:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-26 10:45:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-26 10:45:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-26 10:45:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:45:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825420491] [2023-11-26 10:45:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825420491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:21,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:21,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:45:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319481722] [2023-11-26 10:45:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:21,564 INFO L87 Difference]: Start difference. First operand 394 states and 606 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:24,172 INFO L93 Difference]: Finished difference Result 914 states and 1420 transitions. [2023-11-26 10:45:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:45:24,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 146 [2023-11-26 10:45:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:24,179 INFO L225 Difference]: With dead ends: 914 [2023-11-26 10:45:24,179 INFO L226 Difference]: Without dead ends: 539 [2023-11-26 10:45:24,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:45:24,182 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1147 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:24,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 963 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 10:45:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-11-26 10:45:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 396. [2023-11-26 10:45:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 296 states have (on average 1.5472972972972974) internal successors, (458), 302 states have internal predecessors, (458), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2023-11-26 10:45:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 609 transitions. [2023-11-26 10:45:24,232 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 609 transitions. Word has length 146 [2023-11-26 10:45:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:24,232 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 609 transitions. [2023-11-26 10:45:24,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 10:45:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 609 transitions. [2023-11-26 10:45:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-26 10:45:24,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:24,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:24,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:45:24,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:24,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1120146823, now seen corresponding path program 1 times [2023-11-26 10:45:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364803879] [2023-11-26 10:45:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:45:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:45:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:45:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:45:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:45:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:45:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:45:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:45:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:45:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 10:45:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-26 10:45:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 10:45:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-26 10:45:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364803879] [2023-11-26 10:45:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364803879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:24,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 10:45:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486794160] [2023-11-26 10:45:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:45:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:45:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:45:24,569 INFO L87 Difference]: Start difference. First operand 396 states and 609 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 10:45:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:28,049 INFO L93 Difference]: Finished difference Result 912 states and 1415 transitions. [2023-11-26 10:45:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:45:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 147 [2023-11-26 10:45:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:28,054 INFO L225 Difference]: With dead ends: 912 [2023-11-26 10:45:28,054 INFO L226 Difference]: Without dead ends: 539 [2023-11-26 10:45:28,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-26 10:45:28,057 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1224 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:28,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1332 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 4048 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 10:45:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-11-26 10:45:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 396. [2023-11-26 10:45:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 296 states have (on average 1.5472972972972974) internal successors, (458), 302 states have internal predecessors, (458), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2023-11-26 10:45:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 608 transitions. [2023-11-26 10:45:28,105 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 608 transitions. Word has length 147 [2023-11-26 10:45:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:28,106 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 608 transitions. [2023-11-26 10:45:28,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 10:45:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 608 transitions. [2023-11-26 10:45:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-26 10:45:28,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:28,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:45:28,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:28,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1081715599, now seen corresponding path program 2 times [2023-11-26 10:45:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:28,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705310682] [2023-11-26 10:45:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 10:45:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 10:45:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:45:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:45:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:45:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:45:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:45:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:45:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:45:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 10:45:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 10:45:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-26 10:45:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-26 10:45:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705310682] [2023-11-26 10:45:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705310682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 10:45:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069015360] [2023-11-26 10:45:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:45:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:45:28,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:45:28,427 INFO L87 Difference]: Start difference. First operand 396 states and 608 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 10:45:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:32,043 INFO L93 Difference]: Finished difference Result 914 states and 1421 transitions. [2023-11-26 10:45:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:45:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 148 [2023-11-26 10:45:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:32,049 INFO L225 Difference]: With dead ends: 914 [2023-11-26 10:45:32,049 INFO L226 Difference]: Without dead ends: 541 [2023-11-26 10:45:32,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-26 10:45:32,052 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1176 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 4317 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 4753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 4317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:32,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1332 Invalid, 4753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 4317 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 10:45:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-26 10:45:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 398. [2023-11-26 10:45:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 297 states have (on average 1.5454545454545454) internal successors, (459), 304 states have internal predecessors, (459), 72 states have call successors, (72), 24 states have call predecessors, (72), 28 states have return successors, (83), 71 states have call predecessors, (83), 71 states have call successors, (83) [2023-11-26 10:45:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 614 transitions. [2023-11-26 10:45:32,111 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 614 transitions. Word has length 148 [2023-11-26 10:45:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:32,111 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 614 transitions. [2023-11-26 10:45:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 10:45:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 614 transitions. [2023-11-26 10:45:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 10:45:32,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:32,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:32,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:45:32,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:32,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:32,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1808158206, now seen corresponding path program 1 times [2023-11-26 10:45:32,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:32,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007312084] [2023-11-26 10:45:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:32,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:45:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:45:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:45:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:45:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:45:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:45:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:45:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:45:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:45:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:45:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 10:45:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-26 10:45:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007312084] [2023-11-26 10:45:32,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007312084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:32,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831328003] [2023-11-26 10:45:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:32,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:32,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:32,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:32,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:45:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:32,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:32,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831328003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:32,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:45:32,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-11-26 10:45:32,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648763149] [2023-11-26 10:45:32,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:32,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:45:32,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:45:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:45:32,871 INFO L87 Difference]: Start difference. First operand 398 states and 614 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-26 10:45:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:35,518 INFO L93 Difference]: Finished difference Result 1067 states and 1733 transitions. [2023-11-26 10:45:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:45:35,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 149 [2023-11-26 10:45:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:35,526 INFO L225 Difference]: With dead ends: 1067 [2023-11-26 10:45:35,526 INFO L226 Difference]: Without dead ends: 871 [2023-11-26 10:45:35,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:45:35,529 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1546 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:35,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 1208 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 10:45:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-11-26 10:45:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 713. [2023-11-26 10:45:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 548 states have (on average 1.6131386861313868) internal successors, (884), 555 states have internal predecessors, (884), 136 states have call successors, (136), 24 states have call predecessors, (136), 28 states have return successors, (157), 135 states have call predecessors, (157), 135 states have call successors, (157) [2023-11-26 10:45:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1177 transitions. [2023-11-26 10:45:35,591 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1177 transitions. Word has length 149 [2023-11-26 10:45:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:35,591 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1177 transitions. [2023-11-26 10:45:35,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-26 10:45:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1177 transitions. [2023-11-26 10:45:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:45:35,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:35,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:35,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 10:45:35,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc1040b-26ab-4259-ad74-16fee3662694/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:45:35,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:35,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1583562395, now seen corresponding path program 1 times [2023-11-26 10:45:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169240554] [2023-11-26 10:45:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:45:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:45:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:45:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:45:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:45:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:45:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:45:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:45:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 10:45:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 10:45:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-26 10:45:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-26 10:45:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:35,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:35,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169240554] [2023-11-26 10:45:35,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169240554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:35,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:35,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:35,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964170127] [2023-11-26 10:45:35,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:35,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:35,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:35,981 INFO L87 Difference]: Start difference. First operand 713 states and 1177 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:37,988 INFO L93 Difference]: Finished difference Result 1826 states and 3082 transitions. [2023-11-26 10:45:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:37,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2023-11-26 10:45:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:37,999 INFO L225 Difference]: With dead ends: 1826 [2023-11-26 10:45:37,999 INFO L226 Difference]: Without dead ends: 1173 [2023-11-26 10:45:38,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:38,004 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1280 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:38,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 749 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:45:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-11-26 10:45:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1025. [2023-11-26 10:45:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 796 states have (on average 1.6281407035175879) internal successors, (1296), 803 states have internal predecessors, (1296), 200 states have call successors, (200), 24 states have call predecessors, (200), 28 states have return successors, (231), 199 states have call predecessors, (231), 199 states have call successors, (231) [2023-11-26 10:45:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1727 transitions. [2023-11-26 10:45:38,085 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1727 transitions. Word has length 155 [2023-11-26 10:45:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:38,086 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1727 transitions. [2023-11-26 10:45:38,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1727 transitions. [2023-11-26 10:45:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-26 10:45:38,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:38,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:45:38,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:38,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:38,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1908947821, now seen corresponding path program 1 times [2023-11-26 10:45:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281664576] [2023-11-26 10:45:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:38,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:45:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:45:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:45:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:45:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:45:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:45:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 10:45:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:45:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:45:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 10:45:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-26 10:45:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-26 10:45:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:38,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:38,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281664576] [2023-11-26 10:45:38,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281664576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:38,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:38,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272382358] [2023-11-26 10:45:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:38,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:38,252 INFO L87 Difference]: Start difference. First operand 1025 states and 1727 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:40,306 INFO L93 Difference]: Finished difference Result 2575 states and 4400 transitions. [2023-11-26 10:45:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2023-11-26 10:45:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:40,324 INFO L225 Difference]: With dead ends: 2575 [2023-11-26 10:45:40,324 INFO L226 Difference]: Without dead ends: 1660 [2023-11-26 10:45:40,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:40,330 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1269 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:40,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 715 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:45:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-11-26 10:45:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1512. [2023-11-26 10:45:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1188 states have (on average 1.638047138047138) internal successors, (1946), 1195 states have internal predecessors, (1946), 295 states have call successors, (295), 24 states have call predecessors, (295), 28 states have return successors, (326), 294 states have call predecessors, (326), 294 states have call successors, (326) [2023-11-26 10:45:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2567 transitions. [2023-11-26 10:45:40,435 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2567 transitions. Word has length 156 [2023-11-26 10:45:40,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:40,435 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2567 transitions. [2023-11-26 10:45:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2567 transitions. [2023-11-26 10:45:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-26 10:45:40,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:40,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:45:40,468 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:40,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1836612541, now seen corresponding path program 1 times [2023-11-26 10:45:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497307995] [2023-11-26 10:45:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:45:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:45:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:45:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:45:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:45:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:45:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:45:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:45:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:45:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-26 10:45:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-26 10:45:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-26 10:45:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:40,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497307995] [2023-11-26 10:45:40,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497307995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:40,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578839594] [2023-11-26 10:45:40,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:40,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:40,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:40,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:40,663 INFO L87 Difference]: Start difference. First operand 1512 states and 2567 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:42,623 INFO L93 Difference]: Finished difference Result 3677 states and 6359 transitions. [2023-11-26 10:45:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:42,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2023-11-26 10:45:42,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:42,644 INFO L225 Difference]: With dead ends: 3677 [2023-11-26 10:45:42,645 INFO L226 Difference]: Without dead ends: 2395 [2023-11-26 10:45:42,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:42,653 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1326 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:42,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 708 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:45:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2023-11-26 10:45:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2247. [2023-11-26 10:45:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 1800 states have (on average 1.646111111111111) internal successors, (2963), 1807 states have internal predecessors, (2963), 418 states have call successors, (418), 24 states have call predecessors, (418), 28 states have return successors, (465), 417 states have call predecessors, (465), 417 states have call successors, (465) [2023-11-26 10:45:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3846 transitions. [2023-11-26 10:45:42,842 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3846 transitions. Word has length 157 [2023-11-26 10:45:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:42,842 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3846 transitions. [2023-11-26 10:45:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3846 transitions. [2023-11-26 10:45:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-26 10:45:42,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:42,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:45:42,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:42,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1660259698, now seen corresponding path program 1 times [2023-11-26 10:45:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:42,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657660878] [2023-11-26 10:45:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:45:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:45:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:45:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:45:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:45:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:45:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:45:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:45:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:45:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-26 10:45:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-26 10:45:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-26 10:45:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:43,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:43,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657660878] [2023-11-26 10:45:43,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657660878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:43,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:43,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692008774] [2023-11-26 10:45:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:43,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:43,038 INFO L87 Difference]: Start difference. First operand 2247 states and 3846 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:45,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:45,085 INFO L93 Difference]: Finished difference Result 5387 states and 9409 transitions. [2023-11-26 10:45:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:45,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2023-11-26 10:45:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:45,115 INFO L225 Difference]: With dead ends: 5387 [2023-11-26 10:45:45,115 INFO L226 Difference]: Without dead ends: 3567 [2023-11-26 10:45:45,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:45,123 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1307 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:45,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 711 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:45:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2023-11-26 10:45:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3419. [2023-11-26 10:45:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 2793 states have (on average 1.6516290726817042) internal successors, (4613), 2800 states have internal predecessors, (4613), 597 states have call successors, (597), 24 states have call predecessors, (597), 28 states have return successors, (670), 596 states have call predecessors, (670), 596 states have call successors, (670) [2023-11-26 10:45:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5880 transitions. [2023-11-26 10:45:45,348 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5880 transitions. Word has length 158 [2023-11-26 10:45:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:45,349 INFO L495 AbstractCegarLoop]: Abstraction has 3419 states and 5880 transitions. [2023-11-26 10:45:45,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5880 transitions. [2023-11-26 10:45:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-26 10:45:45,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:45,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:45,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:45:45,374 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:45,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash -131549191, now seen corresponding path program 1 times [2023-11-26 10:45:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:45,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036697033] [2023-11-26 10:45:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:45,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:45:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:45:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:45:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:45:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:45:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:45:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:45:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:45:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-26 10:45:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-26 10:45:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-26 10:45:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-26 10:45:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:45,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:45,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036697033] [2023-11-26 10:45:45,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036697033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:45,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:45,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:45,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482927680] [2023-11-26 10:45:45,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:45,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:45,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:45,534 INFO L87 Difference]: Start difference. First operand 3419 states and 5880 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:47,676 INFO L93 Difference]: Finished difference Result 8242 states and 14463 transitions. [2023-11-26 10:45:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:47,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2023-11-26 10:45:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:47,727 INFO L225 Difference]: With dead ends: 8242 [2023-11-26 10:45:47,728 INFO L226 Difference]: Without dead ends: 5537 [2023-11-26 10:45:47,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:47,740 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1287 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:47,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 754 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:45:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2023-11-26 10:45:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 5389. [2023-11-26 10:45:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 4387 states have (on average 1.642124458627764) internal successors, (7204), 4394 states have internal predecessors, (7204), 973 states have call successors, (973), 24 states have call predecessors, (973), 28 states have return successors, (1090), 972 states have call predecessors, (1090), 972 states have call successors, (1090) [2023-11-26 10:45:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 9267 transitions. [2023-11-26 10:45:48,142 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 9267 transitions. Word has length 159 [2023-11-26 10:45:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:48,143 INFO L495 AbstractCegarLoop]: Abstraction has 5389 states and 9267 transitions. [2023-11-26 10:45:48,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 9267 transitions. [2023-11-26 10:45:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-26 10:45:48,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:48,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:45:48,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:48,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1981871534, now seen corresponding path program 1 times [2023-11-26 10:45:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281441816] [2023-11-26 10:45:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:45:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:45:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:45:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:45:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:45:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:45:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:45:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-26 10:45:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-26 10:45:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 10:45:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-26 10:45:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-26 10:45:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:48,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281441816] [2023-11-26 10:45:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281441816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700762951] [2023-11-26 10:45:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:48,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:48,367 INFO L87 Difference]: Start difference. First operand 5389 states and 9267 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:50,627 INFO L93 Difference]: Finished difference Result 13379 states and 23484 transitions. [2023-11-26 10:45:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:50,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 160 [2023-11-26 10:45:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:50,700 INFO L225 Difference]: With dead ends: 13379 [2023-11-26 10:45:50,701 INFO L226 Difference]: Without dead ends: 9070 [2023-11-26 10:45:50,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:50,720 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1307 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:50,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 715 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:45:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9070 states. [2023-11-26 10:45:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9070 to 8922. [2023-11-26 10:45:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8922 states, 7314 states have (on average 1.6406890894175554) internal successors, (12000), 7321 states have internal predecessors, (12000), 1579 states have call successors, (1579), 24 states have call predecessors, (1579), 28 states have return successors, (1774), 1578 states have call predecessors, (1774), 1578 states have call successors, (1774) [2023-11-26 10:45:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8922 states to 8922 states and 15353 transitions. [2023-11-26 10:45:51,289 INFO L78 Accepts]: Start accepts. Automaton has 8922 states and 15353 transitions. Word has length 160 [2023-11-26 10:45:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:51,290 INFO L495 AbstractCegarLoop]: Abstraction has 8922 states and 15353 transitions. [2023-11-26 10:45:51,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 10:45:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 8922 states and 15353 transitions. [2023-11-26 10:45:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-26 10:45:51,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:51,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:45:51,344 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:51,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash 888592487, now seen corresponding path program 1 times [2023-11-26 10:45:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860884151] [2023-11-26 10:45:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:45:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:45:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:45:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:45:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:45:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:45:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:45:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:45:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 10:45:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:45:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:45:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 10:45:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 10:45:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-26 10:45:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-26 10:45:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-26 10:45:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:45:51,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:51,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860884151] [2023-11-26 10:45:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860884151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:51,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137599840] [2023-11-26 10:45:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:51,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:51,494 INFO L87 Difference]: Start difference. First operand 8922 states and 15353 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)