./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product30.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_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh --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 e931bf8fe4413228ccd3caf40302412c554842907046b600d394a87eb5d13e97 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:03:37,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:03:37,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:03:37,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:03:37,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:03:37,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:03:37,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:03:37,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:03:37,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:03:37,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:03:37,887 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:03:37,887 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:03:37,888 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:03:37,888 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:03:37,889 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:03:37,889 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:03:37,890 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:03:37,890 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:03:37,891 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:03:37,891 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:03:37,892 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:03:37,893 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:03:37,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:03:37,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:03:37,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:03:37,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:03:37,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:03:37,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:03:37,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:03:37,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:03:37,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:03:37,897 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:03:37,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:03:37,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:03:37,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:03:37,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:03:37,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:03:37,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:03:37,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:03:37,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:03:37,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:03:37,899 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:03:37,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:03:37,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:03:37,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:03:37,900 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:03:37,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:03:37,900 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_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e931bf8fe4413228ccd3caf40302412c554842907046b600d394a87eb5d13e97 [2023-12-02 18:03:38,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:03:38,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:03:38,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:03:38,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:03:38,132 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:03:38,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec9_product30.cil.c [2023-12-02 18:03:40,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:03:41,230 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:03:41,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/sv-benchmarks/c/product-lines/email_spec9_product30.cil.c [2023-12-02 18:03:41,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/data/d071be2c7/f7bc47ec486b48068523285dc465536a/FLAG22c2f1ca5 [2023-12-02 18:03:41,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/data/d071be2c7/f7bc47ec486b48068523285dc465536a [2023-12-02 18:03:41,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:03:41,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:03:41,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:03:41,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:03:41,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:03:41,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:03:41" (1/1) ... [2023-12-02 18:03:41,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f35a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:41, skipping insertion in model container [2023-12-02 18:03:41,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:03:41" (1/1) ... [2023-12-02 18:03:41,360 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:03:41,833 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_07ac8091-19f0-4454-bb5c-139f822d4e0b/sv-benchmarks/c/product-lines/email_spec9_product30.cil.c[41508,41521] [2023-12-02 18:03:41,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:03:41,921 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:03:41,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-12-02 18:03:41,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [363] [2023-12-02 18:03:41,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [740] [2023-12-02 18:03:41,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [878] [2023-12-02 18:03:41,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1945] [2023-12-02 18:03:41,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1980] [2023-12-02 18:03:41,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [1989] [2023-12-02 18:03:41,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2031] [2023-12-02 18:03:41,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2048] [2023-12-02 18:03:41,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2445] [2023-12-02 18:03:41,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2811] [2023-12-02 18:03:41,993 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_07ac8091-19f0-4454-bb5c-139f822d4e0b/sv-benchmarks/c/product-lines/email_spec9_product30.cil.c[41508,41521] [2023-12-02 18:03:42,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:03:42,049 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:03:42,057 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:03:42,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42 WrapperNode [2023-12-02 18:03:42,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:03:42,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:03:42,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:03:42,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:03:42,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,142 INFO L138 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 947 [2023-12-02 18:03:42,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:03:42,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:03:42,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:03:42,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:03:42,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:03:42,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:03:42,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:03:42,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:03:42,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (1/1) ... [2023-12-02 18:03:42,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:03:42,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:03:42,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:03:42,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:03:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 18:03:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 18:03:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 18:03:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 18:03:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 18:03:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 18:03:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 18:03:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 18:03:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 18:03:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 18:03:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 18:03:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 18:03:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 18:03:42,306 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 18:03:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 18:03:42,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 18:03:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 18:03:42,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 18:03:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 18:03:42,307 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 18:03:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 18:03:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 18:03:42,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 18:03:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 18:03:42,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 18:03:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:03:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 18:03:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 18:03:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 18:03:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 18:03:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 18:03:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 18:03:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 18:03:42,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 18:03:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 18:03:42,309 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 18:03:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 18:03:42,309 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 18:03:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 18:03:42,309 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 18:03:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 18:03:42,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 18:03:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 18:03:42,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 18:03:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 18:03:42,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 18:03:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:03:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 18:03:42,311 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 18:03:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:03:42,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:03:42,497 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:03:42,499 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:03:43,196 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:03:43,683 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:03:43,684 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:03:43,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:03:43 BoogieIcfgContainer [2023-12-02 18:03:43,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:03:43,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:03:43,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:03:43,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:03:43,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:03:41" (1/3) ... [2023-12-02 18:03:43,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d50a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:03:43, skipping insertion in model container [2023-12-02 18:03:43,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:03:42" (2/3) ... [2023-12-02 18:03:43,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d50a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:03:43, skipping insertion in model container [2023-12-02 18:03:43,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:03:43" (3/3) ... [2023-12-02 18:03:43,695 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product30.cil.c [2023-12-02 18:03:43,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:03:43,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:03:43,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:03:43,781 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;@1e1f556d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:03:43,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:03:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 18:03:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 18:03:43,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:43,801 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 18:03:43,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:03:43,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash -399898636, now seen corresponding path program 1 times [2023-12-02 18:03:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:03:43,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028263153] [2023-12-02 18:03:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:43,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:03:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:03:44,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:03:44,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028263153] [2023-12-02 18:03:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028263153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:03:44,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:03:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:03:44,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982599652] [2023-12-02 18:03:44,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:03:44,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:03:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:03:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:03:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:03:44,192 INFO L87 Difference]: Start difference. First operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:03:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:44,318 INFO L93 Difference]: Finished difference Result 295 states and 386 transitions. [2023-12-02 18:03:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:03:44,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2023-12-02 18:03:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:44,335 INFO L225 Difference]: With dead ends: 295 [2023-12-02 18:03:44,335 INFO L226 Difference]: Without dead ends: 186 [2023-12-02 18:03:44,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:03:44,344 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:44,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:03:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-02 18:03:44,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-02 18:03:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 112 states have internal predecessors, (142), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 18:03:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 247 transitions. [2023-12-02 18:03:44,419 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 247 transitions. Word has length 64 [2023-12-02 18:03:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:44,420 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 247 transitions. [2023-12-02 18:03:44,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:03:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 247 transitions. [2023-12-02 18:03:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 18:03:44,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:44,426 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 18:03:44,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:03:44,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:03:44,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 144320955, now seen corresponding path program 1 times [2023-12-02 18:03:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:03:44,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576434756] [2023-12-02 18:03:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:03:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:03:44,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:03:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576434756] [2023-12-02 18:03:44,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576434756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:03:44,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:03:44,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:03:44,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094129560] [2023-12-02 18:03:44,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:03:44,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:03:44,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:03:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:03:44,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:03:44,607 INFO L87 Difference]: Start difference. First operand 186 states and 247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:03:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:44,718 INFO L93 Difference]: Finished difference Result 291 states and 374 transitions. [2023-12-02 18:03:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:03:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2023-12-02 18:03:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:44,723 INFO L225 Difference]: With dead ends: 291 [2023-12-02 18:03:44,723 INFO L226 Difference]: Without dead ends: 188 [2023-12-02 18:03:44,725 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 [2023-12-02 18:03:44,726 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:44,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:03:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-02 18:03:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-02 18:03:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 18:03:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2023-12-02 18:03:44,750 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 65 [2023-12-02 18:03:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:44,751 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2023-12-02 18:03:44,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:03:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2023-12-02 18:03:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 18:03:44,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:44,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:03:44,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:03:44,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:03:44,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:44,755 INFO L85 PathProgramCache]: Analyzing trace with hash -728245085, now seen corresponding path program 1 times [2023-12-02 18:03:44,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:03:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136107169] [2023-12-02 18:03:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:03:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:03:44,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:03:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136107169] [2023-12-02 18:03:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136107169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:03:44,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:03:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:03:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229446433] [2023-12-02 18:03:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:03:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:03:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:03:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:03:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:03:44,866 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:03:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:44,991 INFO L93 Difference]: Finished difference Result 406 states and 557 transitions. [2023-12-02 18:03:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:03:44,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-12-02 18:03:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:44,995 INFO L225 Difference]: With dead ends: 406 [2023-12-02 18:03:44,996 INFO L226 Difference]: Without dead ends: 236 [2023-12-02 18:03:44,997 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 [2023-12-02 18:03:44,998 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 57 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:44,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 434 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:03:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-02 18:03:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2023-12-02 18:03:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 143 states have (on average 1.3776223776223777) internal successors, (197), 146 states have internal predecessors, (197), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-02 18:03:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 324 transitions. [2023-12-02 18:03:45,025 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 324 transitions. Word has length 70 [2023-12-02 18:03:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:45,025 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 324 transitions. [2023-12-02 18:03:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:03:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 324 transitions. [2023-12-02 18:03:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 18:03:45,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:45,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:03:45,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:03:45,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:03:45,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2009341636, now seen corresponding path program 1 times [2023-12-02 18:03:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:03:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322207445] [2023-12-02 18:03:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:03:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:03:45,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:03:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322207445] [2023-12-02 18:03:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322207445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:03:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763523384] [2023-12-02 18:03:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:45,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:03:45,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:03:45,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:03:45,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:03:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:45,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:03:45,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:03:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:03:45,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:03:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:03:45,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763523384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:03:45,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1926089799] [2023-12-02 18:03:45,758 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-12-02 18:03:45,759 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:03:45,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:03:45,767 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:03:45,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:04:27,316 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 225 for LOIs [2023-12-02 18:04:27,476 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 230 for LOIs [2023-12-02 18:04:27,638 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:05:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1926089799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:05:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:05:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 18:05:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661839243] [2023-12-02 18:05:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:05:33,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:05:33,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:05:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:05:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 18:05:33,506 INFO L87 Difference]: Start difference. First operand 231 states and 324 transitions. Second operand has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 18:05:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:05:42,490 INFO L93 Difference]: Finished difference Result 507 states and 744 transitions. [2023-12-02 18:05:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 18:05:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 71 [2023-12-02 18:05:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:05:42,494 INFO L225 Difference]: With dead ends: 507 [2023-12-02 18:05:42,494 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 18:05:42,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 65.9s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 18:05:42,497 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 109 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 3421 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:05:42,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 3421 Invalid, 2327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-02 18:05:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 18:05:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 254. [2023-12-02 18:05:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 165 states have (on average 1.393939393939394) internal successors, (230), 168 states have internal predecessors, (230), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-02 18:05:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2023-12-02 18:05:42,577 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 71 [2023-12-02 18:05:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:05:42,578 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2023-12-02 18:05:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 18:05:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2023-12-02 18:05:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 18:05:42,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:05:42,581 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-02 18:05:42,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:05:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:05:42,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:05:42,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:05:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1802240978, now seen corresponding path program 1 times [2023-12-02 18:05:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:05:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999060194] [2023-12-02 18:05:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:05:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:05:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:05:42,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:05:42,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999060194] [2023-12-02 18:05:42,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999060194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:05:42,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:05:42,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:05:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662928477] [2023-12-02 18:05:42,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:05:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:05:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:05:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:05:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:05:42,869 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 18:05:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:05:43,038 INFO L93 Difference]: Finished difference Result 601 states and 878 transitions. [2023-12-02 18:05:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:05:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2023-12-02 18:05:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:05:43,042 INFO L225 Difference]: With dead ends: 601 [2023-12-02 18:05:43,042 INFO L226 Difference]: Without dead ends: 371 [2023-12-02 18:05:43,043 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 [2023-12-02 18:05:43,044 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 55 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:05:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 440 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:05:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-02 18:05:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 366. [2023-12-02 18:05:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 252 states have (on average 1.4523809523809523) internal successors, (366), 255 states have internal predecessors, (366), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 18:05:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 543 transitions. [2023-12-02 18:05:43,139 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 543 transitions. Word has length 76 [2023-12-02 18:05:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:05:43,140 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 543 transitions. [2023-12-02 18:05:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 18:05:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 543 transitions. [2023-12-02 18:05:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 18:05:43,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:05:43,143 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-02 18:05:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:05:43,143 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:05:43,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:05:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -118771604, now seen corresponding path program 1 times [2023-12-02 18:05:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:05:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860109527] [2023-12-02 18:05:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:05:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:05:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:05:43,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:05:43,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860109527] [2023-12-02 18:05:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860109527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:05:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319816268] [2023-12-02 18:05:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:43,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:05:43,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:05:43,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:05:43,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:05:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:05:43,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:05:43,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:05:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:05:43,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:05:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:05:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319816268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:05:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317969017] [2023-12-02 18:05:43,659 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2023-12-02 18:05:43,660 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:05:43,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:05:43,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:05:43,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:06:48,391 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 225 for LOIs [2023-12-02 18:06:48,548 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 248 for LOIs [2023-12-02 18:06:48,779 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:07:45,785 WARN L293 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 515 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:07:55,709 WARN L293 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 516 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:08:06,203 WARN L293 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 522 DAG size of output: 521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:08:16,782 WARN L293 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 520 DAG size of output: 519 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:08:27,335 WARN L293 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 524 DAG size of output: 523 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:08:49,873 WARN L293 SmtUtils]: Spent 22.00s on a formula simplification. DAG size of input: 528 DAG size of output: 517 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:09:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1317969017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:09:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 18:09:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782730042] [2023-12-02 18:09:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:01,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 18:09:01,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 18:09:01,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 18:09:01,491 INFO L87 Difference]: Start difference. First operand 366 states and 543 transitions. Second operand has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 18:09:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:14,635 INFO L93 Difference]: Finished difference Result 748 states and 1139 transitions. [2023-12-02 18:09:14,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 18:09:14,636 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2023-12-02 18:09:14,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:14,639 INFO L225 Difference]: With dead ends: 748 [2023-12-02 18:09:14,639 INFO L226 Difference]: Without dead ends: 445 [2023-12-02 18:09:14,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 132.7s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 18:09:14,641 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 73 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:14,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3448 Invalid, 2655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 18:09:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-02 18:09:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 380. [2023-12-02 18:09:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 264 states have (on average 1.4507575757575757) internal successors, (383), 267 states have internal predecessors, (383), 90 states have call successors, (90), 25 states have call predecessors, (90), 25 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 18:09:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 562 transitions. [2023-12-02 18:09:14,748 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 562 transitions. Word has length 77 [2023-12-02 18:09:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:14,749 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 562 transitions. [2023-12-02 18:09:14,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 18:09:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 562 transitions. [2023-12-02 18:09:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 18:09:14,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:14,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:14,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 18:09:14,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 18:09:14,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:09:14,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1606343490, now seen corresponding path program 1 times [2023-12-02 18:09:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991717172] [2023-12-02 18:09:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:09:15,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991717172] [2023-12-02 18:09:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991717172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:09:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167049235] [2023-12-02 18:09:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:15,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:09:15,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:09:15,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:09:15,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:09:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:15,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:09:15,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:09:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:09:15,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:09:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:09:15,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167049235] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:09:15,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1975322419] [2023-12-02 18:09:15,483 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 18:09:15,483 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:09:15,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:09:15,483 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:09:15,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:10:47,390 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 225 for LOIs [2023-12-02 18:10:47,546 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 559 for LOIs [2023-12-02 18:10:49,419 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 626 for LOIs [2023-12-02 18:10:54,323 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 483 for LOIs [2023-12-02 18:10:55,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 230 for LOIs [2023-12-02 18:10:55,231 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:11:54,756 WARN L293 SmtUtils]: Spent 11.69s on a formula simplification. DAG size of input: 596 DAG size of output: 591 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:12:06,789 WARN L293 SmtUtils]: Spent 11.63s on a formula simplification. DAG size of input: 597 DAG size of output: 591 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:12:36,012 WARN L293 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 634 DAG size of output: 626 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:12:46,223 WARN L293 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 626 DAG size of output: 618 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:12:56,533 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 632 DAG size of output: 624 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:13:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1975322419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:13:15,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:13:15,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 18:13:15,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118405949] [2023-12-02 18:13:15,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:13:15,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 18:13:15,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:13:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 18:13:15,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:13:15,404 INFO L87 Difference]: Start difference. First operand 380 states and 562 transitions. Second operand has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-02 18:13:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:13:39,388 INFO L93 Difference]: Finished difference Result 773 states and 1174 transitions. [2023-12-02 18:13:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 18:13:39,389 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 80 [2023-12-02 18:13:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:13:39,392 INFO L225 Difference]: With dead ends: 773 [2023-12-02 18:13:39,392 INFO L226 Difference]: Without dead ends: 470 [2023-12-02 18:13:39,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 140.1s TimeCoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:13:39,394 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 58 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:13:39,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3733 Invalid, 3451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3442 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 18:13:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-02 18:13:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 416. [2023-12-02 18:13:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 294 states have (on average 1.445578231292517) internal successors, (425), 297 states have internal predecessors, (425), 93 states have call successors, (93), 28 states have call predecessors, (93), 28 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 18:13:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 610 transitions. [2023-12-02 18:13:39,550 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 610 transitions. Word has length 80 [2023-12-02 18:13:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:13:39,550 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 610 transitions. [2023-12-02 18:13:39,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-02 18:13:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 610 transitions. [2023-12-02 18:13:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 18:13:39,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:13:39,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:13:39,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 18:13:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:13:39,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:13:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:13:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1103703484, now seen corresponding path program 1 times [2023-12-02 18:13:39,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:13:39,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190052025] [2023-12-02 18:13:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:13:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:13:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:13:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:13:39,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:13:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190052025] [2023-12-02 18:13:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190052025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:13:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38749068] [2023-12-02 18:13:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:13:39,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:13:39,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:13:39,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:13:39,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:13:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:13:40,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:13:40,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:13:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:13:40,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:13:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:13:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38749068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:13:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1437393754] [2023-12-02 18:13:40,253 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 18:13:40,253 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:13:40,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:13:40,253 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:13:40,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:14:53,895 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 225 for LOIs [2023-12-02 18:14:54,068 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 230 for LOIs [2023-12-02 18:14:54,233 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:15:57,943 WARN L293 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 519 DAG size of output: 519 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:16:08,388 WARN L293 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 520 DAG size of output: 519 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:16:19,274 WARN L293 SmtUtils]: Spent 10.48s on a formula simplification. DAG size of input: 526 DAG size of output: 525 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:16:30,419 WARN L293 SmtUtils]: Spent 10.71s on a formula simplification. DAG size of input: 524 DAG size of output: 523 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:16:41,823 WARN L293 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 528 DAG size of output: 527 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:17:05,039 WARN L293 SmtUtils]: Spent 22.60s on a formula simplification. DAG size of input: 532 DAG size of output: 521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:17:34,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1437393754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:34,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:17:34,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 18:17:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589495186] [2023-12-02 18:17:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:34,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 18:17:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 18:17:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 18:17:34,506 INFO L87 Difference]: Start difference. First operand 416 states and 610 transitions. Second operand has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 18:17:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:48,721 INFO L93 Difference]: Finished difference Result 787 states and 1189 transitions. [2023-12-02 18:17:48,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 18:17:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 79 [2023-12-02 18:17:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:48,726 INFO L225 Difference]: With dead ends: 787 [2023-12-02 18:17:48,727 INFO L226 Difference]: Without dead ends: 484 [2023-12-02 18:17:48,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 160.2s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 18:17:48,730 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 84 mSDsluCounter, 3306 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:48,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 3497 Invalid, 2619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-02 18:17:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-02 18:17:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 436. [2023-12-02 18:17:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 314 states have (on average 1.4490445859872612) internal successors, (455), 317 states have internal predecessors, (455), 93 states have call successors, (93), 28 states have call predecessors, (93), 28 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 18:17:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 640 transitions. [2023-12-02 18:17:48,965 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 640 transitions. Word has length 79 [2023-12-02 18:17:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:48,965 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 640 transitions. [2023-12-02 18:17:48,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 18:17:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 640 transitions. [2023-12-02 18:17:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:17:48,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:48,968 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2023-12-02 18:17:48,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:17:49,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:49,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:17:49,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1974618235, now seen corresponding path program 1 times [2023-12-02 18:17:49,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:49,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385762155] [2023-12-02 18:17:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 18:17:49,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385762155] [2023-12-02 18:17:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385762155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:17:49,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:17:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353160613] [2023-12-02 18:17:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:49,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:49,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:17:49,374 INFO L87 Difference]: Start difference. First operand 436 states and 640 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 18:17:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:49,746 INFO L93 Difference]: Finished difference Result 567 states and 792 transitions. [2023-12-02 18:17:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2023-12-02 18:17:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:49,751 INFO L225 Difference]: With dead ends: 567 [2023-12-02 18:17:49,751 INFO L226 Difference]: Without dead ends: 466 [2023-12-02 18:17:49,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:17:49,753 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 123 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 302 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:17:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-02 18:17:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-02 18:17:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 330 states have (on average 1.4272727272727272) internal successors, (471), 333 states have internal predecessors, (471), 99 states have call successors, (99), 37 states have call predecessors, (99), 36 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 18:17:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 668 transitions. [2023-12-02 18:17:50,000 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 668 transitions. Word has length 82 [2023-12-02 18:17:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:50,001 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 668 transitions. [2023-12-02 18:17:50,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 18:17:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 668 transitions. [2023-12-02 18:17:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 18:17:50,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:50,005 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:17:50,006 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:17:50,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1570097903, now seen corresponding path program 1 times [2023-12-02 18:17:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905305717] [2023-12-02 18:17:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 18:17:50,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905305717] [2023-12-02 18:17:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905305717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222229949] [2023-12-02 18:17:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:50,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:50,392 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:50,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ac8091-19f0-4454-bb5c-139f822d4e0b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:17:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:50,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:17:50,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 18:17:50,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:17:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 18:17:50,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222229949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:17:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [478397564] [2023-12-02 18:17:50,929 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-12-02 18:17:50,929 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:17:50,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:17:50,930 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:17:50,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs