./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:34:26,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:34:26,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:34:26,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:34:26,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:34:26,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:34:26,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:34:26,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:34:26,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:34:26,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:34:26,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:34:26,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:34:26,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:34:26,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:34:26,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:34:26,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:34:26,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:34:26,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:34:26,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:34:26,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:34:26,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:34:26,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:34:26,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:34:26,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:34:26,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:34:26,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:34:26,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:34:26,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:34:26,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:34:26,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:34:26,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:34:26,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:34:26,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:34:26,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:34:26,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:34:26,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:34:26,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:34:26,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:34:26,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:34:26,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:34:26,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:34:26,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:34:26,417 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:34:26,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:34:26,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:34:26,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:34:26,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:34:26,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:34:26,423 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:34:26,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:34:26,423 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:34:26,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:34:26,424 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:34:26,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:34:26,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:34:26,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:34:26,425 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:34:26,425 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:34:26,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:34:26,426 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:34:26,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:34:26,427 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:34:26,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:34:26,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:34:26,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:34:26,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:34:26,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:34:26,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:34:26,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:34:26,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:34:26,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:34:26,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:34:26,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:34:26,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:34:26,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:26,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:34:26,431 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:34:26,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:34:26,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:34:26,432 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:34:26,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:34:26,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:34:26,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:34:26,432 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_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 [2022-11-03 03:34:26,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:34:26,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:34:26,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:34:26,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:34:26,752 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:34:26,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2022-11-03 03:34:26,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/data/7451b9c62/3f2e3d6d8c3f415d991ac3de35897a31/FLAGeb115b113 [2022-11-03 03:34:27,447 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:34:27,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2022-11-03 03:34:27,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/data/7451b9c62/3f2e3d6d8c3f415d991ac3de35897a31/FLAGeb115b113 [2022-11-03 03:34:27,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/data/7451b9c62/3f2e3d6d8c3f415d991ac3de35897a31 [2022-11-03 03:34:27,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:34:27,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:34:27,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:27,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:34:27,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:34:27,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:27" (1/1) ... [2022-11-03 03:34:27,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568e7452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:27, skipping insertion in model container [2022-11-03 03:34:27,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:27" (1/1) ... [2022-11-03 03:34:27,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:34:27,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:34:28,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2022-11-03 03:34:28,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:28,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:34:28,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2022-11-03 03:34:28,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:28,620 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:34:28,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28 WrapperNode [2022-11-03 03:34:28,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:28,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:28,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:34:28,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:34:28,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,732 INFO L138 Inliner]: procedures = 113, calls = 154, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 698 [2022-11-03 03:34:28,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:28,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:34:28,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:34:28,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:34:28,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:34:28,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:34:28,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:34:28,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:34:28,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (1/1) ... [2022-11-03 03:34:28,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:28,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:28,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:34:28,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:34:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:34:28,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:34:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:34:28,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:34:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:34:28,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:34:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:34:28,917 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:34:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:34:28,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:34:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:34:28,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:34:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:34:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:34:28,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:34:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 03:34:28,919 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 03:34:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:34:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:34:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:34:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:34:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:34:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:34:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:34:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:34:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:34:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:34:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:34:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:34:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:34:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:34:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:34:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:34:29,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:34:29,151 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:34:29,948 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:34:30,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:34:30,338 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:34:30,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:30 BoogieIcfgContainer [2022-11-03 03:34:30,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:34:30,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:34:30,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:34:30,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:34:30,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:34:27" (1/3) ... [2022-11-03 03:34:30,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573b8502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:30, skipping insertion in model container [2022-11-03 03:34:30,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:28" (2/3) ... [2022-11-03 03:34:30,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573b8502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:30, skipping insertion in model container [2022-11-03 03:34:30,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:30" (3/3) ... [2022-11-03 03:34:30,352 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product36.cil.c [2022-11-03 03:34:30,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:34:30,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:34:30,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:34:30,475 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;@8e45ae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:34:30,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:34:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 78 states have internal predecessors, (106), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-03 03:34:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 03:34:30,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:30,494 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:34:30,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:30,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1988783954, now seen corresponding path program 1 times [2022-11-03 03:34:30,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832635775] [2022-11-03 03:34:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:34:30,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:30,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832635775] [2022-11-03 03:34:30,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832635775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:30,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:30,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:34:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211452997] [2022-11-03 03:34:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:30,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:34:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:34:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:34:30,970 INFO L87 Difference]: Start difference. First operand has 122 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 78 states have internal predecessors, (106), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:31,120 INFO L93 Difference]: Finished difference Result 201 states and 271 transitions. [2022-11-03 03:34:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:34:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2022-11-03 03:34:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:31,140 INFO L225 Difference]: With dead ends: 201 [2022-11-03 03:34:31,141 INFO L226 Difference]: Without dead ends: 119 [2022-11-03 03:34:31,149 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 [2022-11-03 03:34:31,159 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:31,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:34:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-03 03:34:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-03 03:34:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.36986301369863) internal successors, (100), 75 states have internal predecessors, (100), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-03 03:34:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2022-11-03 03:34:31,228 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 49 [2022-11-03 03:34:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:31,231 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2022-11-03 03:34:31,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2022-11-03 03:34:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:34:31,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:31,236 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:34:31,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:34:31,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash -384343292, now seen corresponding path program 1 times [2022-11-03 03:34:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:31,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309394052] [2022-11-03 03:34:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:31,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:34:31,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:31,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309394052] [2022-11-03 03:34:31,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309394052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:31,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:31,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:31,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632644748] [2022-11-03 03:34:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:31,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:31,489 INFO L87 Difference]: Start difference. First operand 119 states and 161 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:31,619 INFO L93 Difference]: Finished difference Result 197 states and 256 transitions. [2022-11-03 03:34:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-11-03 03:34:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:31,626 INFO L225 Difference]: With dead ends: 197 [2022-11-03 03:34:31,626 INFO L226 Difference]: Without dead ends: 121 [2022-11-03 03:34:31,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:31,633 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:31,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 267 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:34:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-03 03:34:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-03 03:34:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 75 states have (on average 1.36) internal successors, (102), 77 states have internal predecessors, (102), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-03 03:34:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 163 transitions. [2022-11-03 03:34:31,658 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 163 transitions. Word has length 50 [2022-11-03 03:34:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:31,658 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 163 transitions. [2022-11-03 03:34:31,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 163 transitions. [2022-11-03 03:34:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:34:31,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:31,661 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:34:31,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:34:31,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1283196689, now seen corresponding path program 1 times [2022-11-03 03:34:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:31,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057970306] [2022-11-03 03:34:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:34:31,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:31,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057970306] [2022-11-03 03:34:31,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057970306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283577276] [2022-11-03 03:34:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:31,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:31,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:31,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:31,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:34:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:32,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:34:32,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:34:32,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:34:32,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283577276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:34:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [830729124] [2022-11-03 03:34:32,379 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-03 03:34:32,380 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:32,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:32,391 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:32,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:41,478 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:34:41,829 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:14,167 WARN L234 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 573 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:28,324 WARN L234 SmtUtils]: Spent 12.94s on a formula simplification. DAG size of input: 575 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:29,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [830729124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:29,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:29,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2022-11-03 03:35:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177965582] [2022-11-03 03:35:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:29,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:35:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:35:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:35:29,443 INFO L87 Difference]: Start difference. First operand 121 states and 163 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:35:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:33,777 INFO L93 Difference]: Finished difference Result 307 states and 461 transitions. [2022-11-03 03:35:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:35:33,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 54 [2022-11-03 03:35:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:33,783 INFO L225 Difference]: With dead ends: 307 [2022-11-03 03:35:33,783 INFO L226 Difference]: Without dead ends: 198 [2022-11-03 03:35:33,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 47.6s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:35:33,784 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 100 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:33,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1762 Invalid, 879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 03:35:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-03 03:35:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 142. [2022-11-03 03:35:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 98 states have internal predecessors, (134), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-03 03:35:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2022-11-03 03:35:33,850 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 54 [2022-11-03 03:35:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:33,850 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2022-11-03 03:35:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:35:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2022-11-03 03:35:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:35:33,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:33,853 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:35:33,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:35:34,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-03 03:35:34,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1146373234, now seen corresponding path program 1 times [2022-11-03 03:35:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:34,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602595329] [2022-11-03 03:35:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:35:34,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:34,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602595329] [2022-11-03 03:35:34,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602595329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:34,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:34,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525626909] [2022-11-03 03:35:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:34,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:34,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:34,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:34,200 INFO L87 Difference]: Start difference. First operand 142 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:35:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:34,385 INFO L93 Difference]: Finished difference Result 325 states and 463 transitions. [2022-11-03 03:35:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2022-11-03 03:35:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:34,391 INFO L225 Difference]: With dead ends: 325 [2022-11-03 03:35:34,391 INFO L226 Difference]: Without dead ends: 197 [2022-11-03 03:35:34,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:34,400 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 48 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 267 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:35:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-03 03:35:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2022-11-03 03:35:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 145 states have internal predecessors, (211), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-03 03:35:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 278 transitions. [2022-11-03 03:35:34,516 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 278 transitions. Word has length 55 [2022-11-03 03:35:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:34,516 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 278 transitions. [2022-11-03 03:35:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:35:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 278 transitions. [2022-11-03 03:35:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:35:34,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:34,519 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:35:34,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:35:34,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1155593179, now seen corresponding path program 1 times [2022-11-03 03:35:34,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:34,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790391389] [2022-11-03 03:35:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:34,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:35:34,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:34,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790391389] [2022-11-03 03:35:34,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790391389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:34,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471547775] [2022-11-03 03:35:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:34,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:34,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:34,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:34,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:35:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:34,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:35:34,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:35:35,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:35:35,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471547775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:35,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43526338] [2022-11-03 03:35:35,117 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-03 03:35:35,118 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:35,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:35,118 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:35,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:57,823 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:35:58,167 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 465 for LOIs [2022-11-03 03:36:25,696 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 455 for LOIs [2022-11-03 03:36:26,027 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 463 for LOIs [2022-11-03 03:36:30,290 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 254 for LOIs [2022-11-03 03:36:34,233 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-11-03 03:36:34,266 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-03 03:36:34,306 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 456 for LOIs [2022-11-03 03:36:35,111 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 443 for LOIs [2022-11-03 03:36:35,433 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:37:05,045 WARN L234 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 584 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:17,371 WARN L234 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 586 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:23,884 WARN L234 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 558 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:06,695 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 503 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:12,689 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 516 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:46,433 WARN L234 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 501 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:00,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [43526338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:00,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:39:00,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [4, 4, 4] total 50 [2022-11-03 03:39:00,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888383353] [2022-11-03 03:39:00,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:00,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 03:39:00,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 03:39:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2314, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 03:39:00,125 INFO L87 Difference]: Start difference. First operand 192 states and 278 transitions. Second operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 26 states have internal predecessors, (31), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:39:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:40,692 INFO L93 Difference]: Finished difference Result 487 states and 753 transitions. [2022-11-03 03:39:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 03:39:40,692 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 26 states have internal predecessors, (31), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 56 [2022-11-03 03:39:40,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:40,696 INFO L225 Difference]: With dead ends: 487 [2022-11-03 03:39:40,696 INFO L226 Difference]: Without dead ends: 350 [2022-11-03 03:39:40,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 173.4s TimeCoverageRelationStatistics Valid=230, Invalid=3552, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 03:39:40,700 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 235 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:40,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2936 Invalid, 3422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-03 03:39:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-03 03:39:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 231. [2022-11-03 03:39:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 168 states have (on average 1.4345238095238095) internal successors, (241), 170 states have internal predecessors, (241), 43 states have call successors, (43), 22 states have call predecessors, (43), 19 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 03:39:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2022-11-03 03:39:40,906 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 56 [2022-11-03 03:39:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:40,907 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2022-11-03 03:39:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 26 states have internal predecessors, (31), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:39:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2022-11-03 03:39:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:39:40,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:40,909 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:39:40,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:39:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:39:41,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:39:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1459605837, now seen corresponding path program 1 times [2022-11-03 03:39:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:41,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415359887] [2022-11-03 03:39:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:39:41,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415359887] [2022-11-03 03:39:41,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415359887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:39:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552078498] [2022-11-03 03:39:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:41,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:39:41,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:39:41,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:39:41,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:39:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:41,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:39:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:39:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:39:41,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:39:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:39:41,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552078498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:39:41,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106381481] [2022-11-03 03:39:41,643 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2022-11-03 03:39:41,643 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:39:41,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:39:41,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:39:41,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:39:56,733 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:39:57,085 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:40:38,424 WARN L234 SmtUtils]: Spent 23.23s on a formula simplification. DAG size of input: 581 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:53,084 WARN L234 SmtUtils]: Spent 13.22s on a formula simplification. DAG size of input: 583 DAG size of output: 313 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:06,106 WARN L234 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 570 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:15,328 WARN L234 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 570 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:24,437 WARN L234 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 568 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:25,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1106381481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:25,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:41:25,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 4, 4] total 23 [2022-11-03 03:41:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895611404] [2022-11-03 03:41:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:25,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:41:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:41:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:41:25,662 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:41:36,012 WARN L234 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 578 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:39,075 INFO L93 Difference]: Finished difference Result 500 states and 765 transitions. [2022-11-03 03:41:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 03:41:39,079 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2022-11-03 03:41:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:39,081 INFO L225 Difference]: With dead ends: 500 [2022-11-03 03:41:39,082 INFO L226 Difference]: Without dead ends: 363 [2022-11-03 03:41:39,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 97.8s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:41:39,083 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 116 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:39,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1483 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 03:41:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-03 03:41:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 241. [2022-11-03 03:41:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 178 states have (on average 1.4382022471910112) internal successors, (256), 180 states have internal predecessors, (256), 43 states have call successors, (43), 22 states have call predecessors, (43), 19 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 03:41:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 341 transitions. [2022-11-03 03:41:39,323 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 341 transitions. Word has length 58 [2022-11-03 03:41:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:39,324 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 341 transitions. [2022-11-03 03:41:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:41:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 341 transitions. [2022-11-03 03:41:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 03:41:39,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:39,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:39,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:39,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:39,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:39,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -260069017, now seen corresponding path program 1 times [2022-11-03 03:41:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:39,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273567712] [2022-11-03 03:41:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:39,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:41:39,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:39,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273567712] [2022-11-03 03:41:39,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273567712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:39,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777364013] [2022-11-03 03:41:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:39,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:39,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:39,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:41:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:39,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:41:39,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:41:39,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:41:40,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777364013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:40,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1058493509] [2022-11-03 03:41:40,064 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-03 03:41:40,064 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:41:40,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:41:40,065 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:41:40,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:42:14,944 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:42:15,267 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-03 03:42:17,017 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-03 03:42:17,058 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 249 for LOIs [2022-11-03 03:42:17,795 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 254 for LOIs [2022-11-03 03:42:22,078 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-03 03:42:22,111 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-03 03:42:22,155 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 03:42:26,491 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2022-11-03 03:42:26,530 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:42:49,627 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 557 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:02,102 WARN L234 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 559 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:08,611 WARN L234 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 562 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:28,811 WARN L234 SmtUtils]: Spent 15.61s on a formula simplification. DAG size of input: 477 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:44:04,228 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 501 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:44:17,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1058493509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:17,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:44:17,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [6, 5, 5] total 53 [2022-11-03 03:44:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814238766] [2022-11-03 03:44:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:17,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 03:44:17,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:17,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 03:44:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2611, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 03:44:17,980 INFO L87 Difference]: Start difference. First operand 241 states and 341 transitions. Second operand has 45 states, 29 states have (on average 1.103448275862069) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:45:08,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:08,564 INFO L93 Difference]: Finished difference Result 627 states and 989 transitions. [2022-11-03 03:45:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-03 03:45:08,565 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 29 states have (on average 1.103448275862069) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2022-11-03 03:45:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:08,569 INFO L225 Difference]: With dead ends: 627 [2022-11-03 03:45:08,569 INFO L226 Difference]: Without dead ends: 473 [2022-11-03 03:45:08,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 148.3s TimeCoverageRelationStatistics Valid=243, Invalid=4047, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 03:45:08,572 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 298 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 4044 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 4094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:08,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 3191 Invalid, 4094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 4044 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 03:45:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-03 03:45:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 349. [2022-11-03 03:45:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 276 states have internal predecessors, (413), 51 states have call successors, (51), 29 states have call predecessors, (51), 24 states have return successors, (51), 43 states have call predecessors, (51), 50 states have call successors, (51) [2022-11-03 03:45:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 515 transitions. [2022-11-03 03:45:08,867 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 515 transitions. Word has length 59 [2022-11-03 03:45:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:08,868 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 515 transitions. [2022-11-03 03:45:08,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 29 states have (on average 1.103448275862069) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:45:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 515 transitions. [2022-11-03 03:45:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 03:45:08,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:08,870 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:08,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:09,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7103a3-9ae7-460a-856f-1f1f54815520/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:09,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1478113436, now seen corresponding path program 1 times [2022-11-03 03:45:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:09,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812517098] [2022-11-03 03:45:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:45:09,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:09,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812517098] [2022-11-03 03:45:09,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812517098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:09,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:09,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:45:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218756766] [2022-11-03 03:45:09,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:09,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:45:09,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:45:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:09,221 INFO L87 Difference]: Start difference. First operand 349 states and 515 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:45:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:09,694 INFO L93 Difference]: Finished difference Result 363 states and 538 transitions. [2022-11-03 03:45:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:45:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2022-11-03 03:45:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:09,695 INFO L225 Difference]: With dead ends: 363 [2022-11-03 03:45:09,696 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:45:09,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:09,697 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 13 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:09,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 570 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:45:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:45:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:45:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:45:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:45:09,699 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2022-11-03 03:45:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:09,699 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:45:09,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:45:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:45:09,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:45:09,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:45:09,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:45:09,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:46:05,526 WARN L234 SmtUtils]: Spent 35.32s on a formula simplification. DAG size of input: 739 DAG size of output: 595 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-03 03:46:13,222 WARN L234 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 470 DAG size of output: 470 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-03 03:46:30,382 WARN L234 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 491 DAG size of output: 485 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)