./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product39.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_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/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_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/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_026e205b-f5ad-43e9-84a1-c8f31f184703/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 d13022ac5777526b0e211d2bc2c4786b4fd03965aed567ff73b5cfbb8c2cd97a --- 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 01:35:40,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:35:40,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:35:40,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:35:40,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:35:40,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:35:40,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:35:40,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:35:40,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:35:40,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:35:40,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:35:40,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:35:40,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:35:40,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:35:40,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:35:40,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:35:40,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:35:40,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:35:40,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:35:40,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:35:40,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:35:40,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:35:40,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:35:40,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:35:40,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:35:40,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:35:40,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:35:40,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:35:40,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:35:40,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:35:40,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:35:40,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:35:40,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:35:40,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:35:40,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:35:40,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:35:40,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:35:40,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:35:40,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:35:40,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:35:40,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:35:40,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:35:40,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:35:40,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:35:40,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:35:40,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:35:40,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:35:40,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:35:40,927 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:35:40,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:35:40,927 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:35:40,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:35:40,929 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:35:40,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:35:40,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:35:40,930 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:35:40,930 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:35:40,930 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:35:40,931 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:35:40,931 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:35:40,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:35:40,932 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:35:40,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:35:40,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:35:40,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:35:40,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:35:40,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:35:40,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:35:40,934 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:35:40,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:35:40,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:35:40,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:35:40,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:35:40,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:35:40,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:35:40,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:35:40,936 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:35:40,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:35:40,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:35:40,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:35:40,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:35:40,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:35:40,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:35:40,938 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_026e205b-f5ad-43e9-84a1-c8f31f184703/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13022ac5777526b0e211d2bc2c4786b4fd03965aed567ff73b5cfbb8c2cd97a [2022-11-03 01:35:41,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:35:41,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:35:41,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:35:41,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:35:41,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:35:41,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c [2022-11-03 01:35:41,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/data/15c8fcd67/d2624823f57d41a490f6a3890da55bd2/FLAG268759607 [2022-11-03 01:35:42,213 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:35:42,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c [2022-11-03 01:35:42,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/data/15c8fcd67/d2624823f57d41a490f6a3890da55bd2/FLAG268759607 [2022-11-03 01:35:42,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/data/15c8fcd67/d2624823f57d41a490f6a3890da55bd2 [2022-11-03 01:35:42,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:35:42,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:35:42,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:35:42,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:35:42,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:35:42,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:42" (1/1) ... [2022-11-03 01:35:42,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405d4a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:42, skipping insertion in model container [2022-11-03 01:35:42,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:42" (1/1) ... [2022-11-03 01:35:42,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:35:42,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:35:43,128 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_026e205b-f5ad-43e9-84a1-c8f31f184703/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c[17959,17972] [2022-11-03 01:35:43,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:35:43,427 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:35:43,473 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_026e205b-f5ad-43e9-84a1-c8f31f184703/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c[17959,17972] [2022-11-03 01:35:43,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:35:43,561 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:35:43,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43 WrapperNode [2022-11-03 01:35:43,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:35:43,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:35:43,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:35:43,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:35:43,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,711 INFO L138 Inliner]: procedures = 124, calls = 195, calls flagged for inlining = 47, calls inlined = 43, statements flattened = 813 [2022-11-03 01:35:43,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:35:43,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:35:43,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:35:43,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:35:43,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:35:43,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:35:43,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:35:43,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:35:43,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (1/1) ... [2022-11-03 01:35:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:35:43,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:35:43,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:35:43,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:35:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 01:35:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 01:35:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 01:35:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 01:35:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:35:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:35:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 01:35:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 01:35:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:35:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:35:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:35:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:35:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:35:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:35:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:35:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:35:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:35:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:35:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:35:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:35:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:35:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:35:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 01:35:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 01:35:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:35:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:35:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:35:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:35:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:35:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:35:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:35:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:35:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:35:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:35:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:35:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:35:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:35:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 01:35:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:35:43,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:35:44,231 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:35:44,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:35:45,296 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:35:45,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:35:45,864 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:35:45,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:45 BoogieIcfgContainer [2022-11-03 01:35:45,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:35:45,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:35:45,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:35:45,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:35:45,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:35:42" (1/3) ... [2022-11-03 01:35:45,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4367db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:45, skipping insertion in model container [2022-11-03 01:35:45,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:43" (2/3) ... [2022-11-03 01:35:45,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4367db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:45, skipping insertion in model container [2022-11-03 01:35:45,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:45" (3/3) ... [2022-11-03 01:35:45,883 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product39.cil.c [2022-11-03 01:35:45,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:35:45,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:35:46,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:35:46,018 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;@3590a602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:35:46,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:35:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 92 states have internal predecessors, (119), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-03 01:35:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 01:35:46,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:35:46,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:35:46,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:35:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:35:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1192879232, now seen corresponding path program 1 times [2022-11-03 01:35:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:35:46,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070416812] [2022-11-03 01:35:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:35:46,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:35:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:35:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:35:46,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:35:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070416812] [2022-11-03 01:35:46,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070416812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:35:46,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:35:46,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:35:46,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504216986] [2022-11-03 01:35:46,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:35:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:35:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:35:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:35:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:35:46,761 INFO L87 Difference]: Start difference. First operand has 156 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 92 states have internal predecessors, (119), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:35:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:35:46,989 INFO L93 Difference]: Finished difference Result 220 states and 293 transitions. [2022-11-03 01:35:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:35:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-03 01:35:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:35:47,014 INFO L225 Difference]: With dead ends: 220 [2022-11-03 01:35:47,014 INFO L226 Difference]: Without dead ends: 153 [2022-11-03 01:35:47,020 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 01:35:47,025 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:35:47,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:35:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-03 01:35:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-03 01:35:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 89 states have internal predecessors, (113), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:35:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 204 transitions. [2022-11-03 01:35:47,129 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 204 transitions. Word has length 61 [2022-11-03 01:35:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:35:47,131 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 204 transitions. [2022-11-03 01:35:47,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:35:47,134 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 204 transitions. [2022-11-03 01:35:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 01:35:47,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:35:47,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:35:47,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:35:47,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:35:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:35:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1809284070, now seen corresponding path program 1 times [2022-11-03 01:35:47,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:35:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029029181] [2022-11-03 01:35:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:35:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:35:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:35:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:35:47,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:35:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029029181] [2022-11-03 01:35:47,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029029181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:35:47,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:35:47,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:35:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106096212] [2022-11-03 01:35:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:35:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:35:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:35:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:35:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:35:47,495 INFO L87 Difference]: Start difference. First operand 153 states and 204 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:35:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:35:47,641 INFO L93 Difference]: Finished difference Result 216 states and 278 transitions. [2022-11-03 01:35:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:35:47,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-11-03 01:35:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:35:47,649 INFO L225 Difference]: With dead ends: 216 [2022-11-03 01:35:47,649 INFO L226 Difference]: Without dead ends: 155 [2022-11-03 01:35:47,650 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 01:35:47,652 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:35:47,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:35:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-03 01:35:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-03 01:35:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 91 states have internal predecessors, (115), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:35:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 206 transitions. [2022-11-03 01:35:47,673 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 206 transitions. Word has length 62 [2022-11-03 01:35:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:35:47,675 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 206 transitions. [2022-11-03 01:35:47,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:35:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 206 transitions. [2022-11-03 01:35:47,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 01:35:47,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:35:47,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:35:47,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:35:47,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:35:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:35:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1996307456, now seen corresponding path program 1 times [2022-11-03 01:35:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:35:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479975814] [2022-11-03 01:35:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:35:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:35:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:35:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:35:47,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:35:47,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479975814] [2022-11-03 01:35:47,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479975814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:35:47,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:35:47,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:35:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597996286] [2022-11-03 01:35:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:35:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:35:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:35:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:35:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:35:47,919 INFO L87 Difference]: Start difference. First operand 155 states and 206 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:35:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:35:48,089 INFO L93 Difference]: Finished difference Result 345 states and 479 transitions. [2022-11-03 01:35:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:35:48,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-03 01:35:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:35:48,092 INFO L225 Difference]: With dead ends: 345 [2022-11-03 01:35:48,093 INFO L226 Difference]: Without dead ends: 208 [2022-11-03 01:35:48,094 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 01:35:48,096 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 59 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:35:48,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 362 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:35:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-03 01:35:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2022-11-03 01:35:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 125 states have internal predecessors, (170), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-03 01:35:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 289 transitions. [2022-11-03 01:35:48,146 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 289 transitions. Word has length 67 [2022-11-03 01:35:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:35:48,148 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 289 transitions. [2022-11-03 01:35:48,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:35:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 289 transitions. [2022-11-03 01:35:48,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:35:48,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:35:48,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:35:48,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:35:48,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:35:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:35:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash 998637404, now seen corresponding path program 1 times [2022-11-03 01:35:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:35:48,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623335043] [2022-11-03 01:35:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:35:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:35:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:35:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:35:48,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:35:48,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623335043] [2022-11-03 01:35:48,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623335043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:35:48,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513108653] [2022-11-03 01:35:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:35:48,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:35:48,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:35:48,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:35:48,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:35:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:35:48,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:35:48,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:35:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:35:48,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:35:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:35:49,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513108653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:35:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1782731103] [2022-11-03 01:35:49,119 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-03 01:35:49,119 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:35:49,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:35:49,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:35:49,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:36:24,036 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 01:36:24,417 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:36:24,879 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 245 for LOIs [2022-11-03 01:36:26,626 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-03 01:36:26,678 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 247 for LOIs [2022-11-03 01:36:27,440 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 250 for LOIs [2022-11-03 01:36:31,008 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 241 for LOIs [2022-11-03 01:36:31,044 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 238 for LOIs [2022-11-03 01:36:31,082 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-03 01:36:36,285 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 227 for LOIs [2022-11-03 01:36:36,350 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:37:29,372 WARN L234 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:37:36,986 WARN L234 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 567 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:37:47,730 WARN L234 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 569 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:37:55,384 WARN L234 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 569 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:03,019 WARN L234 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 567 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:17,869 WARN L234 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 469 DAG size of output: 256 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:28,270 WARN L234 SmtUtils]: Spent 9.81s on a formula simplification. DAG size of input: 491 DAG size of output: 262 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:04,039 WARN L234 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 493 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:18,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1782731103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:18,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:39:18,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [4, 4, 4] total 55 [2022-11-03 01:39:18,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103242507] [2022-11-03 01:39:18,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:18,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-03 01:39:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:18,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-03 01:39:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2819, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 01:39:18,482 INFO L87 Difference]: Start difference. First operand 203 states and 289 transitions. Second operand has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:39:32,198 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 486 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:28,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:28,900 INFO L93 Difference]: Finished difference Result 586 states and 917 transitions. [2022-11-03 01:40:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 01:40:28,901 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 68 [2022-11-03 01:40:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:28,906 INFO L225 Difference]: With dead ends: 586 [2022-11-03 01:40:28,906 INFO L226 Difference]: Without dead ends: 401 [2022-11-03 01:40:28,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 203.1s TimeCoverageRelationStatistics Valid=222, Invalid=3938, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 01:40:28,911 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 233 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 6932 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 5182 SdHoareTripleChecker+Invalid, 6972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:28,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 5182 Invalid, 6972 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [40 Valid, 6932 Invalid, 0 Unknown, 0 Unchecked, 28.6s Time] [2022-11-03 01:40:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-03 01:40:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 297. [2022-11-03 01:40:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 201 states have (on average 1.4427860696517414) internal successors, (290), 204 states have internal predecessors, (290), 69 states have call successors, (69), 28 states have call predecessors, (69), 26 states have return successors, (69), 64 states have call predecessors, (69), 68 states have call successors, (69) [2022-11-03 01:40:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 428 transitions. [2022-11-03 01:40:29,150 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 428 transitions. Word has length 68 [2022-11-03 01:40:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:29,151 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 428 transitions. [2022-11-03 01:40:29,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:40:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 428 transitions. [2022-11-03 01:40:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 01:40:29,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:29,154 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:29,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:40:29,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:29,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 929743851, now seen corresponding path program 1 times [2022-11-03 01:40:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066688677] [2022-11-03 01:40:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:29,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:40:29,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:29,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066688677] [2022-11-03 01:40:29,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066688677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:29,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:29,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138542288] [2022-11-03 01:40:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:29,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:29,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:29,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:29,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:29,470 INFO L87 Difference]: Start difference. First operand 297 states and 428 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:40:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:29,841 INFO L93 Difference]: Finished difference Result 681 states and 1012 transitions. [2022-11-03 01:40:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:29,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-03 01:40:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:29,846 INFO L225 Difference]: With dead ends: 681 [2022-11-03 01:40:29,846 INFO L226 Difference]: Without dead ends: 422 [2022-11-03 01:40:29,848 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 01:40:29,849 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:29,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 381 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-03 01:40:30,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 415. [2022-11-03 01:40:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 288 states have (on average 1.4722222222222223) internal successors, (424), 291 states have internal predecessors, (424), 100 states have call successors, (100), 28 states have call predecessors, (100), 26 states have return successors, (100), 95 states have call predecessors, (100), 99 states have call successors, (100) [2022-11-03 01:40:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 624 transitions. [2022-11-03 01:40:30,151 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 624 transitions. Word has length 73 [2022-11-03 01:40:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:30,151 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 624 transitions. [2022-11-03 01:40:30,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:40:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 624 transitions. [2022-11-03 01:40:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 01:40:30,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:30,155 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:30,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:40:30,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1228435594, now seen corresponding path program 1 times [2022-11-03 01:40:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:30,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526979515] [2022-11-03 01:40:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:30,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:40:30,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:30,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526979515] [2022-11-03 01:40:30,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526979515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:40:30,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366427248] [2022-11-03 01:40:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:30,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:30,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:40:30,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:40:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:30,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:40:30,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:40:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:40:30,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:40:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:40:30,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366427248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:40:30,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1503891148] [2022-11-03 01:40:30,757 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-03 01:40:30,757 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:40:30,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:40:30,760 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:40:30,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:41:14,708 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 01:41:15,121 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 01:41:15,478 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:41:30,024 WARN L234 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:41:36,714 WARN L234 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:41:47,748 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 465 DAG size of output: 290 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:42:16,244 WARN L234 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:42:28,514 WARN L234 SmtUtils]: Spent 11.73s on a formula simplification. DAG size of input: 570 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:42:37,650 WARN L234 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 572 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:42:50,292 WARN L234 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 572 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:03,144 WARN L234 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 570 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:14,364 WARN L234 SmtUtils]: Spent 10.49s on a formula simplification. DAG size of input: 570 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:25,753 WARN L234 SmtUtils]: Spent 10.57s on a formula simplification. DAG size of input: 568 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:30,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1503891148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:30,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:43:30,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 01:43:30,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119001110] [2022-11-03 01:43:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:30,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 01:43:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 01:43:30,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:43:30,704 INFO L87 Difference]: Start difference. First operand 415 states and 624 transitions. Second operand has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 01:43:39,155 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 504 DAG size of output: 389 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:46,275 WARN L234 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 417 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:52,784 WARN L234 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 421 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:59,106 WARN L234 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 419 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:05,861 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 412 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:13,089 WARN L234 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 410 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:31,624 INFO L93 Difference]: Finished difference Result 798 states and 1239 transitions. [2022-11-03 01:44:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 01:44:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-11-03 01:44:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:31,634 INFO L225 Difference]: With dead ends: 798 [2022-11-03 01:44:31,634 INFO L226 Difference]: Without dead ends: 513 [2022-11-03 01:44:31,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 184.8s TimeCoverageRelationStatistics Valid=200, Invalid=1206, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 01:44:31,639 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 274 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:31,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2594 Invalid, 2085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 01:44:31,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-03 01:44:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 443. [2022-11-03 01:44:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 313 states have (on average 1.4696485623003195) internal successors, (460), 317 states have internal predecessors, (460), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (102), 96 states have call predecessors, (102), 101 states have call successors, (102) [2022-11-03 01:44:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 664 transitions. [2022-11-03 01:44:31,950 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 664 transitions. Word has length 74 [2022-11-03 01:44:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:31,951 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 664 transitions. [2022-11-03 01:44:31,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 01:44:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 664 transitions. [2022-11-03 01:44:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 01:44:31,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:31,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:32,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:32,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 01:44:32,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1685242986, now seen corresponding path program 1 times [2022-11-03 01:44:32,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:32,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212109295] [2022-11-03 01:44:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:32,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:44:32,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:32,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212109295] [2022-11-03 01:44:32,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212109295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:32,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176562477] [2022-11-03 01:44:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:32,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:32,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:32,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:32,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:44:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:32,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:44:32,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:44:32,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:44:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:44:32,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176562477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:44:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879250409] [2022-11-03 01:44:32,915 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-03 01:44:32,915 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:44:32,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:44:32,917 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:44:32,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:45:11,252 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 01:45:11,627 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2022-11-03 01:45:11,701 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2022-11-03 01:45:11,781 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 218 for LOIs [2022-11-03 01:45:13,142 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-03 01:45:13,215 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-11-03 01:45:13,252 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:45:13,619 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 218 for LOIs [2022-11-03 01:45:14,233 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 223 for LOIs [2022-11-03 01:45:16,637 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2022-11-03 01:45:16,672 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 416 for LOIs [2022-11-03 01:45:18,359 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 198 for LOIs [2022-11-03 01:45:18,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:45:33,600 WARN L234 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:40,533 WARN L234 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:19,431 WARN L234 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:44,620 WARN L234 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 416 DAG size of output: 229 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [879250409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:18,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:47:18,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-03 01:47:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431640219] [2022-11-03 01:47:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:18,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-03 01:47:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-03 01:47:18,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3267, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 01:47:18,505 INFO L87 Difference]: Start difference. First operand 443 states and 664 transitions. Second operand has 54 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:48:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:11,148 INFO L93 Difference]: Finished difference Result 902 states and 1380 transitions. [2022-11-03 01:48:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-03 01:48:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 77 [2022-11-03 01:48:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:11,157 INFO L225 Difference]: With dead ends: 902 [2022-11-03 01:48:11,157 INFO L226 Difference]: Without dead ends: 612 [2022-11-03 01:48:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 148.4s TimeCoverageRelationStatistics Valid=237, Invalid=4593, Unknown=0, NotChecked=0, Total=4830 [2022-11-03 01:48:11,160 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 262 mSDsluCounter, 5186 mSDsCounter, 0 mSdLazyCounter, 7330 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 5205 SdHoareTripleChecker+Invalid, 7369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:11,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 5205 Invalid, 7369 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [39 Valid, 7330 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2022-11-03 01:48:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-03 01:48:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 527. [2022-11-03 01:48:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 377 states have (on average 1.4509283819628647) internal successors, (547), 383 states have internal predecessors, (547), 114 states have call successors, (114), 39 states have call predecessors, (114), 35 states have return successors, (114), 104 states have call predecessors, (114), 113 states have call successors, (114) [2022-11-03 01:48:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 775 transitions. [2022-11-03 01:48:11,541 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 775 transitions. Word has length 77 [2022-11-03 01:48:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:11,542 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 775 transitions. [2022-11-03 01:48:11,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:48:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 775 transitions. [2022-11-03 01:48:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 01:48:11,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:11,545 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:11,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:11,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:11,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:11,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash -495019339, now seen corresponding path program 1 times [2022-11-03 01:48:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:11,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128407796] [2022-11-03 01:48:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 01:48:11,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128407796] [2022-11-03 01:48:11,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128407796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:11,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605143766] [2022-11-03 01:48:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:11,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:11,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:11,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:11,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026e205b-f5ad-43e9-84a1-c8f31f184703/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:48:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:12,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:48:12,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:48:12,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:48:12,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605143766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:12,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [825374408] [2022-11-03 01:48:12,351 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-03 01:48:12,351 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:12,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:12,353 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:12,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs