./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 2329fc70 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_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/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_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh --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-2329fc7 [2022-12-14 11:40:30,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:40:30,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:40:30,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:40:30,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:40:30,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:40:30,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:40:30,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:40:30,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:40:30,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:40:30,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:40:30,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:40:30,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:40:30,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:40:30,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:40:30,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:40:30,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:40:30,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:40:30,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:40:30,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:40:30,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:40:30,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:40:30,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:40:30,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:40:30,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:40:30,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:40:30,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:40:30,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:40:30,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:40:30,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:40:30,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:40:30,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:40:30,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:40:30,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:40:30,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:40:30,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:40:30,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:40:30,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:40:30,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:40:30,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:40:30,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:40:30,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:40:30,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:40:30,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:40:30,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:40:30,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:40:30,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:40:30,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:40:30,429 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:40:30,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:40:30,429 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:40:30,429 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:40:30,430 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:40:30,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:40:30,430 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:40:30,430 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:40:30,430 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:40:30,431 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:40:30,431 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:40:30,431 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:40:30,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:40:30,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:40:30,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:40:30,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:40:30,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:40:30,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:40:30,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:30,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:40:30,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:40:30,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:40:30,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:40:30,435 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_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2022-12-14 11:40:30,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:40:30,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:40:30,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:40:30,648 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:40:30,649 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:40:30,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-12-14 11:40:33,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:40:33,461 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:40:33,462 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-12-14 11:40:33,473 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/data/6d44563c1/dc0209f5f7da4b64acc10074c91a4a6a/FLAG21d0198b3 [2022-12-14 11:40:33,486 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/data/6d44563c1/dc0209f5f7da4b64acc10074c91a4a6a [2022-12-14 11:40:33,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:40:33,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:40:33,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:33,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:40:33,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:40:33,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:33" (1/1) ... [2022-12-14 11:40:33,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e40d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:33, skipping insertion in model container [2022-12-14 11:40:33,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:33" (1/1) ... [2022-12-14 11:40:33,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:40:33,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:33,757 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,769 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,770 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,776 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,802 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,805 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,850 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,852 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,856 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,947 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-12-14 11:40:33,981 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:33,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:33,991 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:40:34,004 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,006 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,007 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,008 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,014 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,015 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,019 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,020 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,022 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,053 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-12-14 11:40:34,072 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:40:34,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:34,109 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:40:34,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34 WrapperNode [2022-12-14 11:40:34,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:34,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:34,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:40:34,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:40:34,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,202 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2022-12-14 11:40:34,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:34,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:40:34,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:40:34,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:40:34,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:40:34,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:40:34,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:40:34,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:40:34,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (1/1) ... [2022-12-14 11:40:34,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:34,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:40:34,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 11:40:34,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 11:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 11:40:34,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 11:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 11:40:34,350 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 11:40:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 11:40:34,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 11:40:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 11:40:34,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 11:40:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 11:40:34,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 11:40:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 11:40:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 11:40:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 11:40:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 11:40:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 11:40:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 11:40:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 11:40:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 11:40:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 11:40:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 11:40:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 11:40:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 11:40:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 11:40:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 11:40:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 11:40:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 11:40:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 11:40:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 11:40:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 11:40:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 11:40:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 11:40:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 11:40:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 11:40:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 11:40:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 11:40:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 11:40:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 11:40:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 11:40:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 11:40:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 11:40:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 11:40:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 11:40:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 11:40:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 11:40:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 11:40:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:40:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 11:40:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 11:40:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 11:40:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 11:40:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 11:40:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 11:40:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 11:40:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 11:40:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 11:40:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 11:40:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 11:40:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 11:40:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 11:40:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 11:40:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 11:40:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 11:40:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 11:40:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 11:40:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 11:40:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 11:40:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 11:40:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 11:40:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 11:40:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 11:40:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 11:40:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 11:40:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 11:40:34,359 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 11:40:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 11:40:34,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 11:40:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 11:40:34,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 11:40:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:40:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 11:40:34,359 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 11:40:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 11:40:34,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 11:40:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 11:40:34,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 11:40:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 11:40:34,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 11:40:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:40:34,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:40:34,555 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:40:34,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:40:35,366 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:40:35,797 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:40:35,797 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:40:35,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:35 BoogieIcfgContainer [2022-12-14 11:40:35,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:40:35,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:40:35,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:40:35,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:40:35,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:40:33" (1/3) ... [2022-12-14 11:40:35,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f768561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:35, skipping insertion in model container [2022-12-14 11:40:35,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:34" (2/3) ... [2022-12-14 11:40:35,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f768561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:35, skipping insertion in model container [2022-12-14 11:40:35,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:35" (3/3) ... [2022-12-14 11:40:35,808 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2022-12-14 11:40:35,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:40:35,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:40:35,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:40:35,886 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;@72edf2db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:40:35,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:40:35,892 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) [2022-12-14 11:40:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 11:40:35,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:35,910 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] [2022-12-14 11:40:35,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:35,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1414350000, now seen corresponding path program 1 times [2022-12-14 11:40:35,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:35,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799714066] [2022-12-14 11:40:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:36,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:36,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799714066] [2022-12-14 11:40:36,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799714066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:36,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:36,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:40:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951009602] [2022-12-14 11:40:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:36,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:40:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:40:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:40:36,191 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 2 states, 2 states have (on average 30.5) internal successors, (61), 2 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) [2022-12-14 11:40:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:36,318 INFO L93 Difference]: Finished difference Result 596 states and 812 transitions. [2022-12-14 11:40:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:40:36,320 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 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 [2022-12-14 11:40:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:36,329 INFO L225 Difference]: With dead ends: 596 [2022-12-14 11:40:36,329 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 11:40:36,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:40:36,335 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:36,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 11:40:36,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-12-14 11:40:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 240 states have internal predecessors, (291), 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) [2022-12-14 11:40:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 508 transitions. [2022-12-14 11:40:36,384 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 508 transitions. Word has length 121 [2022-12-14 11:40:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:36,385 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 508 transitions. [2022-12-14 11:40:36,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 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) [2022-12-14 11:40:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 508 transitions. [2022-12-14 11:40:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 11:40:36,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:36,389 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] [2022-12-14 11:40:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:40:36,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1318762619, now seen corresponding path program 1 times [2022-12-14 11:40:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:36,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052583746] [2022-12-14 11:40:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:36,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:36,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052583746] [2022-12-14 11:40:36,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052583746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:36,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:36,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:40:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059543325] [2022-12-14 11:40:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:36,545 INFO L87 Difference]: Start difference. First operand 374 states and 508 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-12-14 11:40:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:36,696 INFO L93 Difference]: Finished difference Result 592 states and 786 transitions. [2022-12-14 11:40:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:36,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 122 [2022-12-14 11:40:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:36,701 INFO L225 Difference]: With dead ends: 592 [2022-12-14 11:40:36,701 INFO L226 Difference]: Without dead ends: 376 [2022-12-14 11:40:36,703 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 [2022-12-14 11:40:36,704 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:36,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 913 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-12-14 11:40:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-12-14 11:40:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.3139013452914798) internal successors, (293), 242 states have internal predecessors, (293), 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) [2022-12-14 11:40:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 510 transitions. [2022-12-14 11:40:36,735 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 510 transitions. Word has length 122 [2022-12-14 11:40:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:36,736 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 510 transitions. [2022-12-14 11:40:36,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-12-14 11:40:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 510 transitions. [2022-12-14 11:40:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 11:40:36,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:36,739 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] [2022-12-14 11:40:36,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:40:36,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash -55385328, now seen corresponding path program 1 times [2022-12-14 11:40:36,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:36,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869647157] [2022-12-14 11:40:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:36,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:36,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:36,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869647157] [2022-12-14 11:40:36,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869647157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:36,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:36,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:40:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797511343] [2022-12-14 11:40:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:36,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:36,892 INFO L87 Difference]: Start difference. First operand 376 states and 510 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) [2022-12-14 11:40:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:37,035 INFO L93 Difference]: Finished difference Result 751 states and 1034 transitions. [2022-12-14 11:40:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:37,035 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 [2022-12-14 11:40:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:37,038 INFO L225 Difference]: With dead ends: 751 [2022-12-14 11:40:37,039 INFO L226 Difference]: Without dead ends: 443 [2022-12-14 11:40:37,040 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 [2022-12-14 11:40:37,041 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 84 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:37,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 925 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-12-14 11:40:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-12-14 11:40:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3653136531365313) internal successors, (370), 292 states have internal predecessors, (370), 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) [2022-12-14 11:40:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 615 transitions. [2022-12-14 11:40:37,070 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 615 transitions. Word has length 127 [2022-12-14 11:40:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:37,071 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 615 transitions. [2022-12-14 11:40:37,071 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) [2022-12-14 11:40:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 615 transitions. [2022-12-14 11:40:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 11:40:37,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:37,075 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] [2022-12-14 11:40:37,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:40:37,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 734003120, now seen corresponding path program 1 times [2022-12-14 11:40:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:37,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660104555] [2022-12-14 11:40:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:37,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:37,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:37,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660104555] [2022-12-14 11:40:37,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660104555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:37,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124599021] [2022-12-14 11:40:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:37,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:37,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:40:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:37,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:40:37,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:37,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:37,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124599021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:37,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:40:37,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 11:40:37,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301715108] [2022-12-14 11:40:37,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:37,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:37,615 INFO L87 Difference]: Start difference. First operand 438 states and 615 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:37,816 INFO L93 Difference]: Finished difference Result 1243 states and 1799 transitions. [2022-12-14 11:40:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:37,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 128 [2022-12-14 11:40:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:37,822 INFO L225 Difference]: With dead ends: 1243 [2022-12-14 11:40:37,823 INFO L226 Difference]: Without dead ends: 830 [2022-12-14 11:40:37,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:37,826 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 436 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:37,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1032 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-12-14 11:40:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 828. [2022-12-14 11:40:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 517 states have (on average 1.3636363636363635) internal successors, (705), 554 states have internal predecessors, (705), 225 states have call successors, (225), 85 states have call predecessors, (225), 85 states have return successors, (246), 223 states have call predecessors, (246), 223 states have call successors, (246) [2022-12-14 11:40:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1176 transitions. [2022-12-14 11:40:37,884 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1176 transitions. Word has length 128 [2022-12-14 11:40:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:37,885 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1176 transitions. [2022-12-14 11:40:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1176 transitions. [2022-12-14 11:40:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 11:40:37,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:37,890 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] [2022-12-14 11:40:37,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:40:38,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:38,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash 64760600, now seen corresponding path program 1 times [2022-12-14 11:40:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:38,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735025567] [2022-12-14 11:40:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:38,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:38,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:38,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735025567] [2022-12-14 11:40:38,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735025567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:38,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295089211] [2022-12-14 11:40:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:38,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:38,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:38,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:38,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:40:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:38,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:40:38,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 11:40:38,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:38,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295089211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:38,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:40:38,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 11:40:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900124395] [2022-12-14 11:40:38,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:38,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:38,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:38,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:38,569 INFO L87 Difference]: Start difference. First operand 828 states and 1176 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:38,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:38,773 INFO L93 Difference]: Finished difference Result 2180 states and 3127 transitions. [2022-12-14 11:40:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:38,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2022-12-14 11:40:38,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:38,783 INFO L225 Difference]: With dead ends: 2180 [2022-12-14 11:40:38,783 INFO L226 Difference]: Without dead ends: 1582 [2022-12-14 11:40:38,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:38,788 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 419 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:38,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1196 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-12-14 11:40:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1580. [2022-12-14 11:40:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 988 states have (on average 1.3593117408906883) internal successors, (1343), 1056 states have internal predecessors, (1343), 426 states have call successors, (426), 165 states have call predecessors, (426), 165 states have return successors, (493), 422 states have call predecessors, (493), 422 states have call successors, (493) [2022-12-14 11:40:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2262 transitions. [2022-12-14 11:40:38,877 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2262 transitions. Word has length 129 [2022-12-14 11:40:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:38,878 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2262 transitions. [2022-12-14 11:40:38,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2262 transitions. [2022-12-14 11:40:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-14 11:40:38,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:38,885 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] [2022-12-14 11:40:38,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:40:39,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:39,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:39,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1086117270, now seen corresponding path program 1 times [2022-12-14 11:40:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:39,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226656304] [2022-12-14 11:40:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:39,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226656304] [2022-12-14 11:40:39,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226656304] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678455259] [2022-12-14 11:40:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:39,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:39,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:39,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:40:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:39,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:40:39,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:39,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:39,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678455259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:39,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:40:39,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 11:40:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135315832] [2022-12-14 11:40:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:39,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:39,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:39,536 INFO L87 Difference]: Start difference. First operand 1580 states and 2262 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:39,758 INFO L93 Difference]: Finished difference Result 4213 states and 6181 transitions. [2022-12-14 11:40:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 131 [2022-12-14 11:40:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:39,770 INFO L225 Difference]: With dead ends: 4213 [2022-12-14 11:40:39,770 INFO L226 Difference]: Without dead ends: 2877 [2022-12-14 11:40:39,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:39,776 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 425 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:39,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1171 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2022-12-14 11:40:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2875. [2022-12-14 11:40:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 1794 states have (on average 1.3433667781493868) internal successors, (2410), 1906 states have internal predecessors, (2410), 765 states have call successors, (765), 314 states have call predecessors, (765), 315 states have return successors, (985), 763 states have call predecessors, (985), 757 states have call successors, (985) [2022-12-14 11:40:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4160 transitions. [2022-12-14 11:40:39,946 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4160 transitions. Word has length 131 [2022-12-14 11:40:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:39,947 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 4160 transitions. [2022-12-14 11:40:39,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4160 transitions. [2022-12-14 11:40:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 11:40:39,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:39,955 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] [2022-12-14 11:40:39,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:40:40,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:40,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:40,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1396322173, now seen corresponding path program 1 times [2022-12-14 11:40:40,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:40,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960659139] [2022-12-14 11:40:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:40,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:40,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960659139] [2022-12-14 11:40:40,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960659139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:40,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744325211] [2022-12-14 11:40:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:40,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:40,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:40,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:40,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:40:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:40,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:40:40,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 11:40:40,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:40,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744325211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:40,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:40:40,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 11:40:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904964678] [2022-12-14 11:40:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:40,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:40,591 INFO L87 Difference]: Start difference. First operand 2875 states and 4160 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:40,900 INFO L93 Difference]: Finished difference Result 7323 states and 11151 transitions. [2022-12-14 11:40:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 132 [2022-12-14 11:40:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:40,920 INFO L225 Difference]: With dead ends: 7323 [2022-12-14 11:40:40,920 INFO L226 Difference]: Without dead ends: 5289 [2022-12-14 11:40:40,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:40,930 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 402 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:40,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1225 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2022-12-14 11:40:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5287. [2022-12-14 11:40:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 3294 states have (on average 1.333940497874924) internal successors, (4394), 3478 states have internal predecessors, (4394), 1391 states have call successors, (1391), 598 states have call predecessors, (1391), 601 states have return successors, (2011), 1397 states have call predecessors, (2011), 1369 states have call successors, (2011) [2022-12-14 11:40:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7796 transitions. [2022-12-14 11:40:41,126 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7796 transitions. Word has length 132 [2022-12-14 11:40:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:41,126 INFO L495 AbstractCegarLoop]: Abstraction has 5287 states and 7796 transitions. [2022-12-14 11:40:41,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:40:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7796 transitions. [2022-12-14 11:40:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 11:40:41,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:41,137 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] [2022-12-14 11:40:41,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:40:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:41,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1796395479, now seen corresponding path program 1 times [2022-12-14 11:40:41,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:41,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910130517] [2022-12-14 11:40:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:41,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910130517] [2022-12-14 11:40:41,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910130517] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196343023] [2022-12-14 11:40:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:41,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:41,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:41,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:41,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:40:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:41,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:40:41,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:41,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:40:41,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196343023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:40:41,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [202391957] [2022-12-14 11:40:41,785 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-12-14 11:40:41,785 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:40:41,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:40:41,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:40:41,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:05,302 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-12-14 11:41:06,300 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-12-14 11:41:07,586 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-12-14 11:41:09,322 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-12-14 11:41:09,609 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-12-14 11:41:10,839 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 450 for LOIs [2022-12-14 11:41:11,128 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-12-14 11:41:11,167 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 274 for LOIs [2022-12-14 11:41:11,295 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 262 for LOIs [2022-12-14 11:41:11,409 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 260 for LOIs [2022-12-14 11:41:11,521 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-12-14 11:41:16,149 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-12-14 11:41:16,891 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-12-14 11:41:17,630 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 443 for LOIs [2022-12-14 11:41:29,651 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-12-14 11:41:32,333 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 433 for LOIs [2022-12-14 11:41:32,562 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 432 for LOIs [2022-12-14 11:41:32,800 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-12-14 11:41:32,838 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-12-14 11:41:34,540 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:42:51,047 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:44:35,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [202391957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:44:35,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:44:35,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [4, 4, 4] total 98 [2022-12-14 11:44:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732572231] [2022-12-14 11:44:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:44:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-12-14 11:44:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:44:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-12-14 11:44:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9162, Unknown=0, NotChecked=0, Total=9506 [2022-12-14 11:44:35,379 INFO L87 Difference]: Start difference. First operand 5287 states and 7796 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) [2022-12-14 11:45:43,916 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 810 DAG size of output: 663 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:45:53,075 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 723 DAG size of output: 579 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:45:59,324 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 721 DAG size of output: 577 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:46:09,709 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 572 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:46:16,966 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 574 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:47:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:47:23,068 INFO L93 Difference]: Finished difference Result 9889 states and 14872 transitions. [2022-12-14 11:47:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-12-14 11:47:23,069 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 [2022-12-14 11:47:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:47:23,085 INFO L225 Difference]: With dead ends: 9889 [2022-12-14 11:47:23,085 INFO L226 Difference]: Without dead ends: 5044 [2022-12-14 11:47:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 299 SyntacticMatches, 6 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 260.5s TimeCoverageRelationStatistics Valid=521, Invalid=13521, Unknown=0, NotChecked=0, Total=14042 [2022-12-14 11:47:23,113 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 569 mSDsluCounter, 18861 mSDsCounter, 0 mSdLazyCounter, 26475 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 19452 SdHoareTripleChecker+Invalid, 26561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 26475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:47:23,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 19452 Invalid, 26561 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [86 Valid, 26475 Invalid, 0 Unknown, 0 Unchecked, 86.7s Time] [2022-12-14 11:47:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5044 states. [2022-12-14 11:47:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 4916. [2022-12-14 11:47:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 3071 states have (on average 1.3155323998697492) internal successors, (4040), 3231 states have internal predecessors, (4040), 1258 states have call successors, (1258), 584 states have call predecessors, (1258), 586 states have return successors, (1923), 1265 states have call predecessors, (1923), 1230 states have call successors, (1923) [2022-12-14 11:47:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7221 transitions. [2022-12-14 11:47:23,581 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7221 transitions. Word has length 133 [2022-12-14 11:47:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:47:23,582 INFO L495 AbstractCegarLoop]: Abstraction has 4916 states and 7221 transitions. [2022-12-14 11:47:23,582 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) [2022-12-14 11:47:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7221 transitions. [2022-12-14 11:47:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 11:47:23,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:47:23,591 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] [2022-12-14 11:47:23,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:47:23,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 11:47:23,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:47:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:47:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1165220678, now seen corresponding path program 1 times [2022-12-14 11:47:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:47:23,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026873638] [2022-12-14 11:47:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:47:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:47:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:47:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:47:23,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:47:23,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026873638] [2022-12-14 11:47:23,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026873638] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:47:23,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677392852] [2022-12-14 11:47:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:47:23,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:47:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:47:23,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:47:23,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:47:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:47:24,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:47:24,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:47:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:47:24,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:47:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:47:24,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677392852] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:47:24,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1856271654] [2022-12-14 11:47:24,253 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-12-14 11:47:24,253 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:47:24,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:47:24,254 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:47:24,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:47:47,285 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-12-14 11:47:48,276 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-12-14 11:47:49,611 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-12-14 11:47:51,331 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-12-14 11:47:51,611 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-12-14 11:47:52,982 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2022-12-14 11:47:53,276 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-12-14 11:47:53,313 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2022-12-14 11:47:53,442 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 264 for LOIs [2022-12-14 11:47:53,563 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 262 for LOIs [2022-12-14 11:47:53,677 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-12-14 11:47:58,664 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-12-14 11:47:59,410 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-12-14 11:48:00,140 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 439 for LOIs [2022-12-14 11:48:12,484 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 433 for LOIs [2022-12-14 11:48:15,342 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 431 for LOIs [2022-12-14 11:48:15,568 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 428 for LOIs [2022-12-14 11:48:15,800 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-12-14 11:48:15,839 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-12-14 11:48:20,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:49:16,189 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 720 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:49:40,834 WARN L233 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:51:32,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1856271654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:51:32,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:51:32,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [4, 4, 4] total 98 [2022-12-14 11:51:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514050135] [2022-12-14 11:51:32,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:51:32,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-12-14 11:51:32,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:51:32,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-12-14 11:51:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9162, Unknown=0, NotChecked=0, Total=9506 [2022-12-14 11:51:32,388 INFO L87 Difference]: Start difference. First operand 4916 states and 7221 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) [2022-12-14 11:52:34,836 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 810 DAG size of output: 663 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:52:44,440 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 723 DAG size of output: 579 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:52:50,711 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 721 DAG size of output: 577 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:53:01,760 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 572 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:53:09,378 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 574 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:54:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:54:06,056 INFO L93 Difference]: Finished difference Result 7422 states and 10692 transitions. [2022-12-14 11:54:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-12-14 11:54:06,056 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 [2022-12-14 11:54:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:54:06,071 INFO L225 Difference]: With dead ends: 7422 [2022-12-14 11:54:06,071 INFO L226 Difference]: Without dead ends: 5070 [2022-12-14 11:54:06,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 299 SyntacticMatches, 6 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 270.4s TimeCoverageRelationStatistics Valid=521, Invalid=13521, Unknown=0, NotChecked=0, Total=14042 [2022-12-14 11:54:06,079 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 529 mSDsluCounter, 18620 mSDsCounter, 0 mSdLazyCounter, 24531 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 19203 SdHoareTripleChecker+Invalid, 24564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 24531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:54:06,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 19203 Invalid, 24564 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [33 Valid, 24531 Invalid, 0 Unknown, 0 Unchecked, 73.9s Time] [2022-12-14 11:54:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2022-12-14 11:54:06,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4927. [2022-12-14 11:54:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 3078 states have (on average 1.3151397011046133) internal successors, (4048), 3239 states have internal predecessors, (4048), 1260 states have call successors, (1260), 586 states have call predecessors, (1260), 588 states have return successors, (1926), 1267 states have call predecessors, (1926), 1232 states have call successors, (1926) [2022-12-14 11:54:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 7234 transitions. [2022-12-14 11:54:06,546 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 7234 transitions. Word has length 133 [2022-12-14 11:54:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:54:06,546 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 7234 transitions. [2022-12-14 11:54:06,547 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) [2022-12-14 11:54:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 7234 transitions. [2022-12-14 11:54:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 11:54:06,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:54:06,555 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] [2022-12-14 11:54:06,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:54:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 11:54:06,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:54:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:54:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 488534914, now seen corresponding path program 1 times [2022-12-14 11:54:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:54:06,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469649859] [2022-12-14 11:54:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:54:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:54:06,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:54:06,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469649859] [2022-12-14 11:54:06,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469649859] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:54:06,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045066819] [2022-12-14 11:54:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:06,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:54:06,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:54:06,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:54:06,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2390767-e0db-4c2e-a97e-a1d71d77e173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:54:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:07,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:54:07,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:54:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:54:07,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:54:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:54:07,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045066819] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:54:07,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598675599] [2022-12-14 11:54:07,195 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2022-12-14 11:54:07,195 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:54:07,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:54:07,196 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:54:07,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:54:17,221 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-12-14 11:54:17,495 INFO L180 IcfgInterpreter]: Interpretation finished