./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:11,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:11,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:03:11,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:11,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:11,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:11,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:11,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:11,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:11,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:11,856 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:11,857 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:11,858 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:11,859 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:11,860 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:11,860 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:11,861 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:11,861 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:11,861 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:11,862 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:11,862 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:11,863 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:11,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:11,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:11,865 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:11,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:11,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:11,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:11,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:11,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:11,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:11,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:11,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:11,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:11,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:11,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:11,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:11,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:11,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:11,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:11,870 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:11,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:11,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:11,871 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:11,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:11,872 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 [2023-11-12 01:03:12,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:12,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:12,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:12,190 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:12,191 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:12,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2023-11-12 01:03:15,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:15,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:15,813 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2023-11-12 01:03:15,856 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/data/d7ddbf3fc/0fa2678d1c83471382ff7223fbd80188/FLAG5e49568e4 [2023-11-12 01:03:15,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/data/d7ddbf3fc/0fa2678d1c83471382ff7223fbd80188 [2023-11-12 01:03:15,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:15,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:15,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:15,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:15,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:15,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:15" (1/1) ... [2023-11-12 01:03:15,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cca9bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:15, skipping insertion in model container [2023-11-12 01:03:15,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:15" (1/1) ... [2023-11-12 01:03:15,988 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:16,359 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_678b76e5-242d-404b-aa1f-aa90f55278f0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2023-11-12 01:03:16,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:16,895 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:16,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-11-12 01:03:16,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [276] [2023-11-12 01:03:16,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [386] [2023-11-12 01:03:16,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [403] [2023-11-12 01:03:16,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [412] [2023-11-12 01:03:16,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [778] [2023-11-12 01:03:16,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1356] [2023-11-12 01:03:16,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1753] [2023-11-12 01:03:16,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [2030] [2023-11-12 01:03:16,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3101] [2023-11-12 01:03:16,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [3450] [2023-11-12 01:03:16,928 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_678b76e5-242d-404b-aa1f-aa90f55278f0/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2023-11-12 01:03:17,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:17,050 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:17,059 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:17,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17 WrapperNode [2023-11-12 01:03:17,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:17,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:17,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:17,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:17,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,190 INFO L138 Inliner]: procedures = 152, calls = 292, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1354 [2023-11-12 01:03:17,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:17,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:17,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:17,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:17,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:17,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:17,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:17,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:17,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (1/1) ... [2023-11-12 01:03:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:17,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:17,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:17,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-12 01:03:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-12 01:03:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-12 01:03:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-12 01:03:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-12 01:03:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-12 01:03:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-12 01:03:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-12 01:03:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-12 01:03:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-12 01:03:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-12 01:03:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-12 01:03:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-12 01:03:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-12 01:03:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-12 01:03:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-12 01:03:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-12 01:03:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-12 01:03:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-12 01:03:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-12 01:03:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-12 01:03:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-12 01:03:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-12 01:03:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-12 01:03:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-12 01:03:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-12 01:03:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-12 01:03:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-12 01:03:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-12 01:03:17,401 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-12 01:03:17,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-12 01:03:17,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-12 01:03:17,401 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-12 01:03:17,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-12 01:03:17,401 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-12 01:03:17,401 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-12 01:03:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-12 01:03:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-12 01:03:17,402 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-12 01:03:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-12 01:03:17,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-12 01:03:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-12 01:03:17,403 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-12 01:03:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-12 01:03:17,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-12 01:03:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-12 01:03:17,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-12 01:03:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-12 01:03:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-12 01:03:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-12 01:03:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-12 01:03:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-12 01:03:17,405 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-12 01:03:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-12 01:03:17,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-12 01:03:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-12 01:03:17,405 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-12 01:03:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-12 01:03:17,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-12 01:03:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-12 01:03:17,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-12 01:03:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 01:03:17,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 01:03:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-12 01:03:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-12 01:03:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-12 01:03:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-12 01:03:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-12 01:03:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-12 01:03:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-12 01:03:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-12 01:03:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-12 01:03:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-12 01:03:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-12 01:03:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-12 01:03:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-12 01:03:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-12 01:03:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-12 01:03:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-12 01:03:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-12 01:03:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-12 01:03:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-12 01:03:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-12 01:03:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-12 01:03:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-12 01:03:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-12 01:03:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-12 01:03:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-12 01:03:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-12 01:03:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:17,659 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:17,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:19,046 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:19,965 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:19,965 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 01:03:19,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:19 BoogieIcfgContainer [2023-11-12 01:03:19,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:19,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:19,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:19,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:19,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:15" (1/3) ... [2023-11-12 01:03:19,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a653387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:19, skipping insertion in model container [2023-11-12 01:03:19,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:17" (2/3) ... [2023-11-12 01:03:19,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a653387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:19, skipping insertion in model container [2023-11-12 01:03:19,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:19" (3/3) ... [2023-11-12 01:03:19,984 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_productSimulator.cil.c [2023-11-12 01:03:20,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:20,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:03:20,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:20,094 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=FINITE_AUTOMATA, 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;@17142171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:20,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:03:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 229 states have (on average 1.331877729257642) internal successors, (305), 251 states have internal predecessors, (305), 115 states have call successors, (115), 44 states have call predecessors, (115), 44 states have return successors, (115), 113 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-12 01:03:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-12 01:03:20,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:20,126 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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] [2023-11-12 01:03:20,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:20,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 947251922, now seen corresponding path program 1 times [2023-11-12 01:03:20,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:20,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728097476] [2023-11-12 01:03:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 01:03:21,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:21,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728097476] [2023-11-12 01:03:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728097476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:21,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:21,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974621926] [2023-11-12 01:03:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:21,155 INFO L87 Difference]: Start difference. First operand has 390 states, 229 states have (on average 1.331877729257642) internal successors, (305), 251 states have internal predecessors, (305), 115 states have call successors, (115), 44 states have call predecessors, (115), 44 states have return successors, (115), 113 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-12 01:03:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:21,569 INFO L93 Difference]: Finished difference Result 748 states and 1033 transitions. [2023-11-12 01:03:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:21,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 114 [2023-11-12 01:03:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:21,590 INFO L225 Difference]: With dead ends: 748 [2023-11-12 01:03:21,590 INFO L226 Difference]: Without dead ends: 386 [2023-11-12 01:03:21,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:21,604 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:21,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1421 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-12 01:03:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-11-12 01:03:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 227 states have (on average 1.2907488986784141) internal successors, (293), 247 states have internal predecessors, (293), 115 states have call successors, (115), 44 states have call predecessors, (115), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-12 01:03:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 520 transitions. [2023-11-12 01:03:21,712 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 520 transitions. Word has length 114 [2023-11-12 01:03:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:21,714 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 520 transitions. [2023-11-12 01:03:21,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-12 01:03:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 520 transitions. [2023-11-12 01:03:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-12 01:03:21,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:21,728 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:03:21,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:21,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1073517517, now seen corresponding path program 1 times [2023-11-12 01:03:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:21,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178608041] [2023-11-12 01:03:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 01:03:21,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178608041] [2023-11-12 01:03:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178608041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:21,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:21,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048674273] [2023-11-12 01:03:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:21,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:21,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:21,965 INFO L87 Difference]: Start difference. First operand 386 states and 520 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-12 01:03:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:22,208 INFO L93 Difference]: Finished difference Result 745 states and 1014 transitions. [2023-11-12 01:03:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:22,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 120 [2023-11-12 01:03:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:22,218 INFO L225 Difference]: With dead ends: 745 [2023-11-12 01:03:22,219 INFO L226 Difference]: Without dead ends: 386 [2023-11-12 01:03:22,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:22,228 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 487 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:22,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 469 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-12 01:03:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-11-12 01:03:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 228 states have (on average 1.2719298245614035) internal successors, (290), 246 states have internal predecessors, (290), 113 states have call successors, (113), 45 states have call predecessors, (113), 44 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-12 01:03:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 513 transitions. [2023-11-12 01:03:22,290 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 513 transitions. Word has length 120 [2023-11-12 01:03:22,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:22,292 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 513 transitions. [2023-11-12 01:03:22,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-12 01:03:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 513 transitions. [2023-11-12 01:03:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 01:03:22,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:22,304 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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] [2023-11-12 01:03:22,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:03:22,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:22,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -968370786, now seen corresponding path program 1 times [2023-11-12 01:03:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:22,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177775016] [2023-11-12 01:03:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:22,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 01:03:22,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:22,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177775016] [2023-11-12 01:03:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177775016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:22,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:22,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319634082] [2023-11-12 01:03:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:22,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:22,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:22,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:22,506 INFO L87 Difference]: Start difference. First operand 386 states and 513 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 01:03:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:22,671 INFO L93 Difference]: Finished difference Result 739 states and 993 transitions. [2023-11-12 01:03:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 126 [2023-11-12 01:03:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:22,677 INFO L225 Difference]: With dead ends: 739 [2023-11-12 01:03:22,678 INFO L226 Difference]: Without dead ends: 384 [2023-11-12 01:03:22,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:22,687 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 468 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:22,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 482 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-12 01:03:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2023-11-12 01:03:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 228 states have (on average 1.2587719298245614) internal successors, (287), 244 states have internal predecessors, (287), 111 states have call successors, (111), 45 states have call predecessors, (111), 44 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-12 01:03:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 506 transitions. [2023-11-12 01:03:22,737 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 506 transitions. Word has length 126 [2023-11-12 01:03:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:22,738 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 506 transitions. [2023-11-12 01:03:22,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 01:03:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 506 transitions. [2023-11-12 01:03:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-12 01:03:22,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:22,741 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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] [2023-11-12 01:03:22,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:03:22,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:22,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash -227184027, now seen corresponding path program 1 times [2023-11-12 01:03:22,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:22,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643121742] [2023-11-12 01:03:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 01:03:22,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:22,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643121742] [2023-11-12 01:03:22,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643121742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:22,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:22,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:22,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049544482] [2023-11-12 01:03:22,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:22,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:22,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:22,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:22,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:22,925 INFO L87 Difference]: Start difference. First operand 384 states and 506 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 01:03:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:23,117 INFO L93 Difference]: Finished difference Result 731 states and 960 transitions. [2023-11-12 01:03:23,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:23,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 127 [2023-11-12 01:03:23,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:23,128 INFO L225 Difference]: With dead ends: 731 [2023-11-12 01:03:23,128 INFO L226 Difference]: Without dead ends: 387 [2023-11-12 01:03:23,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:23,135 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 449 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:23,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 465 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-12 01:03:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2023-11-12 01:03:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 239 states have internal predecessors, (276), 108 states have call successors, (108), 45 states have call predecessors, (108), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-12 01:03:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 489 transitions. [2023-11-12 01:03:23,190 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 489 transitions. Word has length 127 [2023-11-12 01:03:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:23,191 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 489 transitions. [2023-11-12 01:03:23,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 01:03:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 489 transitions. [2023-11-12 01:03:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 01:03:23,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:23,197 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 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, 1, 1, 1, 1] [2023-11-12 01:03:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:03:23,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:23,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 10557637, now seen corresponding path program 1 times [2023-11-12 01:03:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:23,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370754442] [2023-11-12 01:03:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-12 01:03:23,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370754442] [2023-11-12 01:03:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370754442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:23,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769401176] [2023-11-12 01:03:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:23,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:23,401 INFO L87 Difference]: Start difference. First operand 381 states and 489 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 01:03:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:23,595 INFO L93 Difference]: Finished difference Result 607 states and 773 transitions. [2023-11-12 01:03:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 139 [2023-11-12 01:03:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:23,599 INFO L225 Difference]: With dead ends: 607 [2023-11-12 01:03:23,599 INFO L226 Difference]: Without dead ends: 383 [2023-11-12 01:03:23,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:23,601 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 0 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:23,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 871 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-12 01:03:23,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2023-11-12 01:03:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 230 states have (on average 1.208695652173913) internal successors, (278), 241 states have internal predecessors, (278), 108 states have call successors, (108), 45 states have call predecessors, (108), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-12 01:03:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 491 transitions. [2023-11-12 01:03:23,634 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 491 transitions. Word has length 139 [2023-11-12 01:03:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:23,635 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 491 transitions. [2023-11-12 01:03:23,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 01:03:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 491 transitions. [2023-11-12 01:03:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 01:03:23,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:23,638 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:23,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:03:23,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:23,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2129671832, now seen corresponding path program 1 times [2023-11-12 01:03:23,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100361081] [2023-11-12 01:03:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-12 01:03:23,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100361081] [2023-11-12 01:03:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100361081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:23,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:23,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:23,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573520618] [2023-11-12 01:03:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:23,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:23,780 INFO L87 Difference]: Start difference. First operand 383 states and 491 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 01:03:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:23,955 INFO L93 Difference]: Finished difference Result 766 states and 1006 transitions. [2023-11-12 01:03:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 144 [2023-11-12 01:03:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:23,959 INFO L225 Difference]: With dead ends: 766 [2023-11-12 01:03:23,960 INFO L226 Difference]: Without dead ends: 450 [2023-11-12 01:03:23,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:23,962 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 76 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:23,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 891 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-12 01:03:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2023-11-12 01:03:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 278 states have (on average 1.2517985611510791) internal successors, (348), 289 states have internal predecessors, (348), 122 states have call successors, (122), 45 states have call predecessors, (122), 44 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-12 01:03:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 589 transitions. [2023-11-12 01:03:24,002 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 589 transitions. Word has length 144 [2023-11-12 01:03:24,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:24,003 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 589 transitions. [2023-11-12 01:03:24,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 01:03:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 589 transitions. [2023-11-12 01:03:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 01:03:24,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:24,006 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:24,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:03:24,007 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:24,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1521390756, now seen corresponding path program 1 times [2023-11-12 01:03:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188164328] [2023-11-12 01:03:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-12 01:03:24,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:24,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188164328] [2023-11-12 01:03:24,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188164328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:24,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972812060] [2023-11-12 01:03:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:24,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:24,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:24,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:24,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678b76e5-242d-404b-aa1f-aa90f55278f0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:03:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:24,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:24,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-12 01:03:24,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-12 01:03:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972812060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [102860074] [2023-11-12 01:03:24,958 INFO L159 IcfgInterpreter]: Started Sifa with 120 locations of interest [2023-11-12 01:03:24,959 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:24,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:24,969 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:24,969 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs