./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:57:18,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:57:18,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:57:18,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:57:18,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:57:18,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:57:18,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:57:18,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:57:18,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:57:18,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:57:18,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:57:18,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:57:18,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:57:18,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:57:18,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:57:18,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:57:18,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:57:18,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:57:18,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:57:18,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:57:18,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:57:18,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:57:18,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:57:18,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:57:18,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:57:18,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:57:18,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:57:18,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:57:18,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:57:18,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:57:18,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:57:18,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:57:18,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:57:18,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:57:18,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:57:18,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:57:18,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:57:18,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:57:18,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:57:18,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:57:18,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:57:18,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:57:18,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:57:18,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:57:18,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:57:18,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:57:18,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:57:18,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:57:18,440 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:57:18,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:57:18,440 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:57:18,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:57:18,441 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:57:18,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:57:18,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:57:18,442 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:57:18,442 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:57:18,443 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:57:18,443 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:57:18,443 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:57:18,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:57:18,444 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:57:18,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:57:18,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:57:18,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:57:18,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:57:18,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:57:18,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:57:18,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:57:18,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:57:18,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:57:18,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:57:18,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:57:18,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:57:18,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:57:18,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:57:18,449 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:57:18,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:57:18,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:57:18,449 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:57:18,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:57:18,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:57:18,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:57:18,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2022-11-22 01:57:18,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:57:18,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:57:18,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:57:18,753 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:57:18,753 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:57:18,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-11-22 01:57:21,784 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:57:22,108 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:57:22,108 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-11-22 01:57:22,127 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/data/5fc44b70a/c1e17121149d4a2d9024b115cf2f3ed0/FLAG01c3fd50d [2022-11-22 01:57:22,142 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/data/5fc44b70a/c1e17121149d4a2d9024b115cf2f3ed0 [2022-11-22 01:57:22,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:57:22,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:57:22,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:57:22,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:57:22,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:57:22,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:57:22" (1/1) ... [2022-11-22 01:57:22,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9167fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:22, skipping insertion in model container [2022-11-22 01:57:22,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:57:22" (1/1) ... [2022-11-22 01:57:22,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:57:22,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:57:22,834 WARN L237 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_068a53ab-5997-44b7-912a-1f7d15514d8b/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-11-22 01:57:22,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:57:22,890 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:57:22,967 WARN L237 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_068a53ab-5997-44b7-912a-1f7d15514d8b/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-11-22 01:57:23,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:57:23,050 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:57:23,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23 WrapperNode [2022-11-22 01:57:23,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:57:23,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:57:23,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:57:23,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:57:23,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,162 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2022-11-22 01:57:23,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:57:23,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:57:23,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:57:23,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:57:23,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:57:23,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:57:23,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:57:23,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:57:23,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (1/1) ... [2022-11-22 01:57:23,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:57:23,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:23,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:57:23,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:57:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-22 01:57:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-22 01:57:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-22 01:57:23,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-22 01:57:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-22 01:57:23,423 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-22 01:57:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-22 01:57:23,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-22 01:57:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-22 01:57:23,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-22 01:57:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-22 01:57:23,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-22 01:57:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-22 01:57:23,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-22 01:57:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-22 01:57:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-22 01:57:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-22 01:57:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-22 01:57:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-22 01:57:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-22 01:57:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-22 01:57:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-22 01:57:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-22 01:57:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-22 01:57:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-22 01:57:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-22 01:57:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-22 01:57:23,428 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-22 01:57:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-22 01:57:23,428 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-22 01:57:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-22 01:57:23,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-22 01:57:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-22 01:57:23,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-22 01:57:23,431 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-22 01:57:23,431 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-22 01:57:23,431 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-22 01:57:23,431 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-22 01:57:23,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-22 01:57:23,431 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-22 01:57:23,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-22 01:57:23,432 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-22 01:57:23,432 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-22 01:57:23,432 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-22 01:57:23,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-22 01:57:23,432 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-22 01:57:23,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-22 01:57:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:57:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-22 01:57:23,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-22 01:57:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-22 01:57:23,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-22 01:57:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-22 01:57:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-22 01:57:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-22 01:57:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-22 01:57:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-22 01:57:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-22 01:57:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-22 01:57:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-22 01:57:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-22 01:57:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-22 01:57:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-22 01:57:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-22 01:57:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-22 01:57:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-22 01:57:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-22 01:57:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-22 01:57:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-22 01:57:23,439 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-22 01:57:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-22 01:57:23,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-22 01:57:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-22 01:57:23,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-22 01:57:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-22 01:57:23,440 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-22 01:57:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-22 01:57:23,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-22 01:57:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-22 01:57:23,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-22 01:57:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:57:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-22 01:57:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-22 01:57:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-22 01:57:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-22 01:57:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-22 01:57:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-22 01:57:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-22 01:57:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-22 01:57:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:57:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:57:23,711 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:57:23,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:57:24,874 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:57:25,560 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:57:25,560 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:57:25,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:57:25 BoogieIcfgContainer [2022-11-22 01:57:25,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:57:25,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:57:25,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:57:25,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:57:25,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:57:22" (1/3) ... [2022-11-22 01:57:25,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bff1d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:57:25, skipping insertion in model container [2022-11-22 01:57:25,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:23" (2/3) ... [2022-11-22 01:57:25,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bff1d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:57:25, skipping insertion in model container [2022-11-22 01:57:25,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:57:25" (3/3) ... [2022-11-22 01:57:25,577 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2022-11-22 01:57:25,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:57:25,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:57:25,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:57:25,689 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=LoopsAndPotentialCycles, 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;@4c6dd6b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:57:25,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:57:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-22 01:57:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-22 01:57:25,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:25,728 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:25,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:57:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1108954499, now seen corresponding path program 1 times [2022-11-22 01:57:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053463289] [2022-11-22 01:57:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:57:26,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053463289] [2022-11-22 01:57:26,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053463289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:57:26,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:57:26,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:57:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839472003] [2022-11-22 01:57:26,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:57:26,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:57:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:57:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:57:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:57:26,513 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:57:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:26,881 INFO L93 Difference]: Finished difference Result 726 states and 998 transitions. [2022-11-22 01:57:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:57:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-11-22 01:57:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:26,909 INFO L225 Difference]: With dead ends: 726 [2022-11-22 01:57:26,909 INFO L226 Difference]: Without dead ends: 374 [2022-11-22 01:57:26,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:57:26,918 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:26,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:57:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-22 01:57:27,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-22 01:57:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-22 01:57:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2022-11-22 01:57:27,092 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 121 [2022-11-22 01:57:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:27,094 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2022-11-22 01:57:27,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:57:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2022-11-22 01:57:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-22 01:57:27,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:27,101 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:27,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:57:27,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:57:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash 448457004, now seen corresponding path program 1 times [2022-11-22 01:57:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:27,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096432187] [2022-11-22 01:57:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:57:27,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:27,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096432187] [2022-11-22 01:57:27,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096432187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:57:27,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:57:27,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:57:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385152270] [2022-11-22 01:57:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:57:27,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:57:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:57:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:57:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:57:27,484 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:57:27,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:27,651 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2022-11-22 01:57:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:57:27,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2022-11-22 01:57:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:27,656 INFO L225 Difference]: With dead ends: 592 [2022-11-22 01:57:27,657 INFO L226 Difference]: Without dead ends: 376 [2022-11-22 01:57:27,659 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 [2022-11-22 01:57:27,661 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:27,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:57:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-22 01:57:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-22 01:57:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-22 01:57:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2022-11-22 01:57:27,696 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 127 [2022-11-22 01:57:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:27,697 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2022-11-22 01:57:27,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:57:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2022-11-22 01:57:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:57:27,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:27,701 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:27,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:57:27,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:57:27,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash -120524735, now seen corresponding path program 1 times [2022-11-22 01:57:27,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:27,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134137672] [2022-11-22 01:57:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:57:27,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:27,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134137672] [2022-11-22 01:57:27,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134137672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:57:27,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:57:27,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:57:27,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401487913] [2022-11-22 01:57:27,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:57:27,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:57:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:57:27,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:57:27,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:57:27,883 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:57:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:28,048 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2022-11-22 01:57:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:57:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2022-11-22 01:57:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:28,060 INFO L225 Difference]: With dead ends: 751 [2022-11-22 01:57:28,060 INFO L226 Difference]: Without dead ends: 443 [2022-11-22 01:57:28,066 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 [2022-11-22 01:57:28,068 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:28,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:57:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-22 01:57:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-11-22 01:57:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-22 01:57:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2022-11-22 01:57:28,144 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 132 [2022-11-22 01:57:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:28,144 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2022-11-22 01:57:28,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:57:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2022-11-22 01:57:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 01:57:28,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:28,155 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:57:28,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:57:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1825392753, now seen corresponding path program 1 times [2022-11-22 01:57:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772230931] [2022-11-22 01:57:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:28,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:57:28,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:28,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772230931] [2022-11-22 01:57:28,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772230931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:57:28,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035859798] [2022-11-22 01:57:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:28,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:28,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:28,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:57:28,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:57:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:28,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:57:28,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:57:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:57:28,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:57:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:57:29,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035859798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:57:29,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [286529196] [2022-11-22 01:57:29,089 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-22 01:57:29,089 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:57:29,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:57:29,098 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:57:29,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:57:59,231 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-22 01:58:00,344 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-22 01:58:01,680 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-11-22 01:58:03,660 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-22 01:58:03,948 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-22 01:58:05,479 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 450 for LOIs [2022-11-22 01:58:05,875 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-11-22 01:58:05,915 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 274 for LOIs [2022-11-22 01:58:06,060 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 262 for LOIs [2022-11-22 01:58:06,182 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 260 for LOIs [2022-11-22 01:58:06,302 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-11-22 01:58:12,134 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-11-22 01:58:12,973 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-11-22 01:58:13,752 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 443 for LOIs [2022-11-22 01:58:27,713 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-11-22 01:58:30,555 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 433 for LOIs [2022-11-22 01:58:30,780 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 432 for LOIs [2022-11-22 01:58:31,034 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-22 01:58:31,073 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-22 01:58:32,840 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:00:01,979 WARN L233 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 720 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:42,033 WARN L233 SmtUtils]: Spent 18.88s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:51,349 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 553 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:59,357 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 551 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:01:10,745 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 474 DAG size of output: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:02:33,370 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 447 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:02:39,527 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 455 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:03:30,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [286529196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:30,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:03:30,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [4, 4, 4] total 98 [2022-11-22 02:03:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240267350] [2022-11-22 02:03:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:30,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-11-22 02:03:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-11-22 02:03:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9162, Unknown=0, NotChecked=0, Total=9506 [2022-11-22 02:03:30,277 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-22 02:03:36,278 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 544 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:03:42,349 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 543 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:03:48,441 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 542 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:03:54,663 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 541 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:00,804 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 540 DAG size of output: 502 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:06,928 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 539 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:13,078 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 538 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:19,156 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 537 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:47,133 WARN L233 SmtUtils]: Spent 11.14s on a formula simplification. DAG size of input: 810 DAG size of output: 663 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:53,060 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 557 DAG size of output: 537 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:03,543 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 723 DAG size of output: 579 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:13,968 WARN L233 SmtUtils]: Spent 9.83s on a formula simplification. DAG size of input: 721 DAG size of output: 577 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:20,238 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 564 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:32,892 WARN L233 SmtUtils]: Spent 11.65s on a formula simplification. DAG size of input: 572 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:45,818 WARN L233 SmtUtils]: Spent 11.67s on a formula simplification. DAG size of input: 574 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:24,894 INFO L93 Difference]: Finished difference Result 1271 states and 1848 transitions. [2022-11-22 02:07:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-22 02:07:24,895 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 133 [2022-11-22 02:07:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:24,901 INFO L225 Difference]: With dead ends: 1271 [2022-11-22 02:07:24,901 INFO L226 Difference]: Without dead ends: 854 [2022-11-22 02:07:24,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 299 SyntacticMatches, 6 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 432.2s TimeCoverageRelationStatistics Valid=521, Invalid=13521, Unknown=0, NotChecked=0, Total=14042 [2022-11-22 02:07:24,907 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 571 mSDsluCounter, 13547 mSDsCounter, 0 mSdLazyCounter, 20836 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 14011 SdHoareTripleChecker+Invalid, 20953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 20836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:24,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 14011 Invalid, 20953 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [117 Valid, 20836 Invalid, 0 Unknown, 0 Unchecked, 98.2s Time] [2022-11-22 02:07:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-22 02:07:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 688. [2022-11-22 02:07:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 501 states have internal predecessors, (651), 144 states have call successors, (144), 68 states have call predecessors, (144), 64 states have return successors, (147), 137 states have call predecessors, (147), 143 states have call successors, (147) [2022-11-22 02:07:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 942 transitions. [2022-11-22 02:07:25,251 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 942 transitions. Word has length 133 [2022-11-22 02:07:25,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:25,252 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 942 transitions. [2022-11-22 02:07:25,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-22 02:07:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 942 transitions. [2022-11-22 02:07:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 02:07:25,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:25,256 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:25,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:07:25,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:07:25,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:07:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2034615151, now seen corresponding path program 1 times [2022-11-22 02:07:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:25,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981541760] [2022-11-22 02:07:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:07:25,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:25,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981541760] [2022-11-22 02:07:25,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981541760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:25,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:25,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:07:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104157110] [2022-11-22 02:07:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:25,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:07:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:07:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:07:25,628 INFO L87 Difference]: Start difference. First operand 688 states and 942 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:07:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:26,341 INFO L93 Difference]: Finished difference Result 1712 states and 2406 transitions. [2022-11-22 02:07:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:07:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2022-11-22 02:07:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:26,374 INFO L225 Difference]: With dead ends: 1712 [2022-11-22 02:07:26,374 INFO L226 Difference]: Without dead ends: 1075 [2022-11-22 02:07:26,380 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 [2022-11-22 02:07:26,384 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 468 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:26,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:07:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-22 02:07:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1071. [2022-11-22 02:07:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 715 states have (on average 1.353846153846154) internal successors, (968), 754 states have internal predecessors, (968), 249 states have call successors, (249), 110 states have call predecessors, (249), 106 states have return successors, (271), 241 states have call predecessors, (271), 247 states have call successors, (271) [2022-11-22 02:07:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1488 transitions. [2022-11-22 02:07:26,881 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1488 transitions. Word has length 135 [2022-11-22 02:07:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:26,882 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1488 transitions. [2022-11-22 02:07:26,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:07:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1488 transitions. [2022-11-22 02:07:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 02:07:26,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:26,887 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:07:26,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:07:26,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1838399742, now seen corresponding path program 1 times [2022-11-22 02:07:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:26,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361773930] [2022-11-22 02:07:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:07:27,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361773930] [2022-11-22 02:07:27,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361773930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:07:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714023342] [2022-11-22 02:07:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:27,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:07:27,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:07:27,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:07:27,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a53ab-5997-44b7-912a-1f7d15514d8b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:07:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:27,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:07:27,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:07:27,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:07:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:07:27,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714023342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:07:27,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767756041] [2022-11-22 02:07:27,687 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-22 02:07:27,687 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:07:27,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:07:27,689 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:07:27,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:07:53,101 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-22 02:07:54,126 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-22 02:07:55,723 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-11-22 02:07:57,598 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-22 02:07:57,874 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-22 02:07:59,327 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2022-11-22 02:07:59,616 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-11-22 02:07:59,653 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2022-11-22 02:07:59,791 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 264 for LOIs [2022-11-22 02:07:59,928 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 262 for LOIs [2022-11-22 02:08:00,054 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-11-22 02:08:05,364 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-11-22 02:08:06,112 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-11-22 02:08:06,864 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 439 for LOIs [2022-11-22 02:08:20,753 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 433 for LOIs [2022-11-22 02:08:23,800 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 431 for LOIs [2022-11-22 02:08:24,032 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 428 for LOIs [2022-11-22 02:08:24,286 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-22 02:08:24,334 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-22 02:08:29,272 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:10:01,951 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 720 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:43,869 WARN L233 SmtUtils]: Spent 19.64s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:53,806 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 553 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)