./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/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_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 03:30:46,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:30:46,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:30:46,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:30:46,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:30:46,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:30:46,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:30:46,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:30:46,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:30:46,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:30:46,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:30:46,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:30:46,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:30:46,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:30:46,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:30:46,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:30:46,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:30:46,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:30:46,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:30:46,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:30:46,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:30:46,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:30:46,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:30:46,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:30:46,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:30:46,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:30:46,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:30:46,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:30:46,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:30:46,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:30:46,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:30:46,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:30:46,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:30:46,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:30:46,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:30:46,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:30:46,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:30:46,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:30:46,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:30:46,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:30:46,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:30:46,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:30:46,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:30:46,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:30:46,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:30:46,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:30:46,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:30:46,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:30:46,556 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:30:46,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:30:46,556 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:30:46,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:30:46,557 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:30:46,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:30:46,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:30:46,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:30:46,558 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:30:46,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:30:46,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:30:46,559 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:30:46,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:30:46,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:30:46,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:30:46,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:30:46,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:30:46,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:30:46,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:30:46,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:30:46,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:30:46,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:30:46,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:30:46,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:30:46,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:30:46,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:30:46,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:46,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:30:46,565 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:30:46,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:30:46,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:30:46,565 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:30:46,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:30:46,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:30:46,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:30:46,567 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_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2022-11-03 03:30:46,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:30:46,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:30:46,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:30:46,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:30:46,972 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:30:46,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-11-03 03:30:47,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/data/9b0ebffd3/116d2d46cd01418db2fd4fb5a48a8813/FLAGcc1eb175c [2022-11-03 03:30:47,856 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:30:47,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-11-03 03:30:47,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/data/9b0ebffd3/116d2d46cd01418db2fd4fb5a48a8813/FLAGcc1eb175c [2022-11-03 03:30:48,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/data/9b0ebffd3/116d2d46cd01418db2fd4fb5a48a8813 [2022-11-03 03:30:48,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:30:48,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:30:48,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:48,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:30:48,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:30:48,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:48" (1/1) ... [2022-11-03 03:30:48,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f681242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:48, skipping insertion in model container [2022-11-03 03:30:48,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:48" (1/1) ... [2022-11-03 03:30:48,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:30:48,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:30:49,106 WARN L230 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_1eeca2b8-e1e7-4368-97c8-68805ee0e925/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-11-03 03:30:49,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:49,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:30:49,303 WARN L230 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_1eeca2b8-e1e7-4368-97c8-68805ee0e925/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-11-03 03:30:49,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:49,371 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:30:49,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49 WrapperNode [2022-11-03 03:30:49,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:49,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:49,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:30:49,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:30:49,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,480 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2022-11-03 03:30:49,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:49,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:30:49,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:30:49,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:30:49,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,549 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:30:49,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:30:49,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:30:49,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:30:49,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (1/1) ... [2022-11-03 03:30:49,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:49,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:49,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:30:49,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:30:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:30:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-03 03:30:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-03 03:30:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-03 03:30:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-03 03:30:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:30:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:30:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:30:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:30:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:30:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-03 03:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-03 03:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-03 03:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-03 03:30:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:30:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:30:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:30:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:30:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:30:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:30:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-03 03:30:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-03 03:30:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-03 03:30:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-03 03:30:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:30:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:30:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:30:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:30:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:30:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:30:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:30:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-03 03:30:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-03 03:30:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:30:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:30:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 03:30:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 03:30:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:30:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:30:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-03 03:30:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-03 03:30:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:30:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:30:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:30:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:30:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:30:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-03 03:30:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-03 03:30:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-03 03:30:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-03 03:30:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-03 03:30:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-03 03:30:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:30:49,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:30:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:30:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:30:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:30:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:30:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:30:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:30:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 03:30:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 03:30:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:30:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:30:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:30:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:30:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-03 03:30:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-03 03:30:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-03 03:30:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-03 03:30:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:30:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:30:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:30:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:30:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:30:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:30:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:30:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-03 03:30:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-03 03:30:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-03 03:30:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-03 03:30:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:30:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:30:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:30:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:30:50,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:30:50,139 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:30:51,560 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:30:52,366 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:30:52,367 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:30:52,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:52 BoogieIcfgContainer [2022-11-03 03:30:52,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:30:52,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:30:52,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:30:52,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:30:52,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:30:48" (1/3) ... [2022-11-03 03:30:52,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6159bbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:52, skipping insertion in model container [2022-11-03 03:30:52,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:49" (2/3) ... [2022-11-03 03:30:52,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6159bbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:52, skipping insertion in model container [2022-11-03 03:30:52,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:52" (3/3) ... [2022-11-03 03:30:52,388 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2022-11-03 03:30:52,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:30:52,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:30:52,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:30:52,497 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;@1473c708, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:30:52,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:30:52,505 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) [2022-11-03 03:30:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 03:30:52,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:52,531 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] [2022-11-03 03:30:52,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1108954499, now seen corresponding path program 1 times [2022-11-03 03:30:52,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:52,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302461275] [2022-11-03 03:30:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:30:53,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:53,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302461275] [2022-11-03 03:30:53,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302461275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:53,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:53,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:30:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700319152] [2022-11-03 03:30:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:53,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:30:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:30:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:30:53,446 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) [2022-11-03 03:30:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:53,841 INFO L93 Difference]: Finished difference Result 726 states and 998 transitions. [2022-11-03 03:30:53,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:53,847 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 [2022-11-03 03:30:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:53,860 INFO L225 Difference]: With dead ends: 726 [2022-11-03 03:30:53,860 INFO L226 Difference]: Without dead ends: 374 [2022-11-03 03:30:53,866 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 [2022-11-03 03:30:53,869 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 1013 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 [2022-11-03 03:30:53,871 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] [2022-11-03 03:30:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-03 03:30:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-03 03:30:53,944 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) [2022-11-03 03:30:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2022-11-03 03:30:53,949 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 121 [2022-11-03 03:30:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:53,951 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2022-11-03 03:30:53,951 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) [2022-11-03 03:30:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2022-11-03 03:30:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 03:30:53,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:53,959 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] [2022-11-03 03:30:53,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:30:53,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash 448457004, now seen corresponding path program 1 times [2022-11-03 03:30:53,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:53,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269632339] [2022-11-03 03:30:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:30:54,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:54,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269632339] [2022-11-03 03:30:54,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269632339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:54,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:54,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236946508] [2022-11-03 03:30:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:54,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:54,265 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) [2022-11-03 03:30:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:54,449 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2022-11-03 03:30:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:54,449 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 [2022-11-03 03:30:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:54,453 INFO L225 Difference]: With dead ends: 592 [2022-11-03 03:30:54,453 INFO L226 Difference]: Without dead ends: 376 [2022-11-03 03:30:54,456 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 [2022-11-03 03:30:54,457 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 499 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:30:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-03 03:30:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-03 03:30:54,491 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) [2022-11-03 03:30:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2022-11-03 03:30:54,494 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 127 [2022-11-03 03:30:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:54,495 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2022-11-03 03:30:54,495 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) [2022-11-03 03:30:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2022-11-03 03:30:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 03:30:54,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:54,500 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] [2022-11-03 03:30:54,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:30:54,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:54,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash -120524735, now seen corresponding path program 1 times [2022-11-03 03:30:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:54,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493005906] [2022-11-03 03:30:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:54,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:30:54,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:54,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493005906] [2022-11-03 03:30:54,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493005906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:54,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:54,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863641095] [2022-11-03 03:30:54,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:54,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:54,676 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) [2022-11-03 03:30:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:54,884 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2022-11-03 03:30:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:54,885 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 [2022-11-03 03:30:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:54,894 INFO L225 Difference]: With dead ends: 751 [2022-11-03 03:30:54,894 INFO L226 Difference]: Without dead ends: 443 [2022-11-03 03:30:54,896 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 [2022-11-03 03:30:54,904 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 491 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:54,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:30:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-03 03:30:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-11-03 03:30:54,969 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) [2022-11-03 03:30:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2022-11-03 03:30:54,972 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 132 [2022-11-03 03:30:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:54,973 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2022-11-03 03:30:54,973 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) [2022-11-03 03:30:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2022-11-03 03:30:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:30:54,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:54,978 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] [2022-11-03 03:30:54,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:30:54,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1825392753, now seen corresponding path program 1 times [2022-11-03 03:30:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:54,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934487082] [2022-11-03 03:30:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:30:55,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:55,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934487082] [2022-11-03 03:30:55,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934487082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:30:55,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27459770] [2022-11-03 03:30:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:55,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:55,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:30:55,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:30:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:55,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:30:55,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:30:55,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:30:56,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27459770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:56,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658658853] [2022-11-03 03:30:56,063 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-03 03:30:56,063 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:30:56,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:30:56,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:30:56,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:31:27,045 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-03 03:31:28,158 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-03 03:31:29,452 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-11-03 03:31:31,532 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-03 03:31:31,809 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-03 03:31:33,327 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 450 for LOIs [2022-11-03 03:31:33,629 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-11-03 03:31:33,674 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 274 for LOIs [2022-11-03 03:31:33,816 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 262 for LOIs [2022-11-03 03:31:33,941 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 260 for LOIs [2022-11-03 03:31:34,059 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-11-03 03:31:40,040 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-11-03 03:31:40,924 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-11-03 03:31:41,678 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 443 for LOIs [2022-11-03 03:31:55,028 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-11-03 03:31:57,778 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 433 for LOIs [2022-11-03 03:31:57,999 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 432 for LOIs [2022-11-03 03:31:58,220 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-03 03:31:58,264 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-03 03:32:00,176 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:33:28,013 WARN L234 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 720 DAG size of output: 494 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:12,867 WARN L234 SmtUtils]: Spent 22.20s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:23,053 WARN L234 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 553 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:31,898 WARN L234 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 551 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:47,669 WARN L234 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 474 DAG size of output: 251 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:36:15,848 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 443 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:36:22,367 WARN L234 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 447 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:36:29,244 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 455 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:26,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1658658853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:26,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:37:26,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [4, 4, 4] total 98 [2022-11-03 03:37:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790971886] [2022-11-03 03:37:26,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:26,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-11-03 03:37:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-11-03 03:37:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9162, Unknown=0, NotChecked=0, Total=9506 [2022-11-03 03:37:26,965 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) [2022-11-03 03:37:33,103 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 544 DAG size of output: 494 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:51,645 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 541 DAG size of output: 500 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:57,975 WARN L234 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 540 DAG size of output: 502 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:04,365 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 539 DAG size of output: 504 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:10,676 WARN L234 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 538 DAG size of output: 506 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:17,085 WARN L234 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 537 DAG size of output: 508 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:46,417 WARN L234 SmtUtils]: Spent 11.71s on a formula simplification. DAG size of input: 810 DAG size of output: 663 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:52,369 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 557 DAG size of output: 537 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:03,036 WARN L234 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 723 DAG size of output: 579 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:14,093 WARN L234 SmtUtils]: Spent 10.40s on a formula simplification. DAG size of input: 721 DAG size of output: 577 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:21,085 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 564 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:35,564 WARN L234 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 572 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:50,200 WARN L234 SmtUtils]: Spent 13.19s on a formula simplification. DAG size of input: 574 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:57,165 WARN L234 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 471 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:03,674 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 469 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:34,915 INFO L93 Difference]: Finished difference Result 1271 states and 1848 transitions. [2022-11-03 03:41:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-03 03:41:34,917 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 [2022-11-03 03:41:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:34,924 INFO L225 Difference]: With dead ends: 1271 [2022-11-03 03:41:34,924 INFO L226 Difference]: Without dead ends: 854 [2022-11-03 03:41:34,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 299 SyntacticMatches, 6 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 469.7s TimeCoverageRelationStatistics Valid=521, Invalid=13521, Unknown=0, NotChecked=0, Total=14042 [2022-11-03 03:41:34,931 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 563 mSDsluCounter, 13939 mSDsCounter, 0 mSdLazyCounter, 20836 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 14011 SdHoareTripleChecker+Invalid, 20961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 20836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:34,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 14011 Invalid, 20961 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [125 Valid, 20836 Invalid, 0 Unknown, 0 Unchecked, 103.1s Time] [2022-11-03 03:41:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-03 03:41:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 688. [2022-11-03 03:41:35,299 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) [2022-11-03 03:41:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 942 transitions. [2022-11-03 03:41:35,305 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 942 transitions. Word has length 133 [2022-11-03 03:41:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:35,306 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 942 transitions. [2022-11-03 03:41:35,306 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) [2022-11-03 03:41:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 942 transitions. [2022-11-03 03:41:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 03:41:35,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:35,312 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] [2022-11-03 03:41:35,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:41:35,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:35,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2034615151, now seen corresponding path program 1 times [2022-11-03 03:41:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:35,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597769713] [2022-11-03 03:41:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-03 03:41:35,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:35,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597769713] [2022-11-03 03:41:35,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597769713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:35,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:35,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:41:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272362467] [2022-11-03 03:41:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:35,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:41:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:41:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:41:35,705 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) [2022-11-03 03:41:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:36,503 INFO L93 Difference]: Finished difference Result 1712 states and 2406 transitions. [2022-11-03 03:41:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:41:36,504 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 [2022-11-03 03:41:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:36,518 INFO L225 Difference]: With dead ends: 1712 [2022-11-03 03:41:36,518 INFO L226 Difference]: Without dead ends: 1075 [2022-11-03 03:41:36,522 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 [2022-11-03 03:41:36,524 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 468 mSDsluCounter, 461 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 [2022-11-03 03:41:36,525 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] [2022-11-03 03:41:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-03 03:41:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1071. [2022-11-03 03:41:37,082 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) [2022-11-03 03:41:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1488 transitions. [2022-11-03 03:41:37,091 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1488 transitions. Word has length 135 [2022-11-03 03:41:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:37,091 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1488 transitions. [2022-11-03 03:41:37,092 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) [2022-11-03 03:41:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1488 transitions. [2022-11-03 03:41:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:41:37,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:37,098 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] [2022-11-03 03:41:37,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:41:37,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1838399742, now seen corresponding path program 1 times [2022-11-03 03:41:37,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:37,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354570155] [2022-11-03 03:41:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:37,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:41:37,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:37,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354570155] [2022-11-03 03:41:37,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354570155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:37,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088598724] [2022-11-03 03:41:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:37,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:37,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:37,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eeca2b8-e1e7-4368-97c8-68805ee0e925/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:41:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:37,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:41:37,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:41:37,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:41:37,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088598724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:37,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1198581988] [2022-11-03 03:41:37,875 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-03 03:41:37,875 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:41:37,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:41:37,876 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:41:37,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:42:04,165 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-03 03:42:05,274 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-03 03:42:06,703 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-11-03 03:42:08,655 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-03 03:42:08,931 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-03 03:42:10,332 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2022-11-03 03:42:10,674 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-11-03 03:42:10,736 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2022-11-03 03:42:10,860 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 264 for LOIs [2022-11-03 03:42:10,986 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 262 for LOIs [2022-11-03 03:42:11,137 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-11-03 03:42:16,794 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-11-03 03:42:17,654 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-11-03 03:42:18,453 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 439 for LOIs [2022-11-03 03:42:33,083 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 433 for LOIs [2022-11-03 03:42:36,041 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 431 for LOIs [2022-11-03 03:42:36,274 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 428 for LOIs [2022-11-03 03:42:36,568 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-03 03:42:36,622 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-03 03:42:41,765 INFO L180 IcfgInterpreter]: Interpretation finished