./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/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_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/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_fce344bc-d1c1-4b05-8e28-801f87d338b2/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 312fc8529e2c53d6a3be2cb9c54168ebb93fc3f65452574800e27c42fdf03e19 --- 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 01:55:02,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:55:02,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:55:02,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:55:02,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:55:02,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:55:02,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:55:02,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:55:02,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:55:02,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:55:02,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:55:02,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:55:02,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:55:02,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:55:02,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:55:02,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:55:02,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:55:02,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:55:02,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:55:02,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:55:02,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:55:02,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:55:02,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:55:02,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:55:02,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:55:02,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:55:02,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:55:02,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:55:02,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:55:02,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:55:02,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:55:02,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:55:02,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:55:02,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:55:02,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:55:02,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:55:02,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:55:02,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:55:02,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:55:02,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:55:02,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:55:02,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:55:02,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:55:02,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:55:02,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:55:02,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:55:02,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:55:02,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:55:02,704 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:55:02,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:55:02,705 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:55:02,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:55:02,705 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:55:02,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:55:02,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:55:02,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:55:02,707 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:55:02,707 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:55:02,707 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:55:02,707 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:55:02,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:55:02,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:55:02,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:55:02,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:55:02,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:55:02,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:55:02,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:55:02,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:55:02,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:55:02,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:55:02,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:55:02,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:55:02,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:55:02,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:55:02,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:02,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:55:02,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:55:02,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:55:02,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:55:02,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:55:02,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:55:02,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:55:02,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:55:02,719 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_fce344bc-d1c1-4b05-8e28-801f87d338b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 312fc8529e2c53d6a3be2cb9c54168ebb93fc3f65452574800e27c42fdf03e19 [2022-11-03 01:55:02,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:55:02,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:55:02,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:55:02,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:55:02,991 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:55:02,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c [2022-11-03 01:55:03,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/data/7caa54c48/0d2c245065aa41c18b7fa83eff5b29f6/FLAGb3fc2ceaa [2022-11-03 01:55:03,777 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:55:03,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c [2022-11-03 01:55:03,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/data/7caa54c48/0d2c245065aa41c18b7fa83eff5b29f6/FLAGb3fc2ceaa [2022-11-03 01:55:03,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/data/7caa54c48/0d2c245065aa41c18b7fa83eff5b29f6 [2022-11-03 01:55:03,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:55:03,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:55:03,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:03,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:55:03,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:55:03,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:03" (1/1) ... [2022-11-03 01:55:03,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e50c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:03, skipping insertion in model container [2022-11-03 01:55:03,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:03" (1/1) ... [2022-11-03 01:55:03,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:55:04,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:55:04,694 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_fce344bc-d1c1-4b05-8e28-801f87d338b2/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c[62782,62795] [2022-11-03 01:55:04,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:04,721 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:55:04,831 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_fce344bc-d1c1-4b05-8e28-801f87d338b2/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c[62782,62795] [2022-11-03 01:55:04,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:04,860 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:55:04,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04 WrapperNode [2022-11-03 01:55:04,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:04,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:04,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:55:04,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:55:04,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:04,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:04,980 INFO L138 Inliner]: procedures = 130, calls = 206, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1042 [2022-11-03 01:55:04,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:04,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:55:04,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:55:04,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:55:04,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:04,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:04,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:04,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:05,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:05,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:05,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:05,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:05,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:55:05,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:55:05,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:55:05,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:55:05,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (1/1) ... [2022-11-03 01:55:05,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:05,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:05,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:55:05,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:55:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:55:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:55:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:55:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:55:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:55:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:55:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:55:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:55:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 01:55:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 01:55:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:55:05,141 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:55:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:55:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:55:05,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:55:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 01:55:05,142 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 01:55:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:55:05,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:55:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:55:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 01:55:05,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 01:55:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:55:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:55:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:55:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:55:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:55:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:55:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:55:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:55:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:55:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:55:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:55:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:55:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:55:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:55:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:55:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:55:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:55:05,412 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:55:05,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:55:06,319 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:55:06,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:55:06,864 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:55:06,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:06 BoogieIcfgContainer [2022-11-03 01:55:06,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:55:06,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:55:06,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:55:06,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:55:06,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:55:03" (1/3) ... [2022-11-03 01:55:06,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377355fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:06, skipping insertion in model container [2022-11-03 01:55:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:04" (2/3) ... [2022-11-03 01:55:06,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377355fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:06, skipping insertion in model container [2022-11-03 01:55:06,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:06" (3/3) ... [2022-11-03 01:55:06,880 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product24.cil.c [2022-11-03 01:55:06,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:55:06,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:55:06,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:06,990 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;@682bcccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:06,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:55:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-03 01:55:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:55:07,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:07,012 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] [2022-11-03 01:55:07,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 456004213, now seen corresponding path program 1 times [2022-11-03 01:55:07,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:07,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368364957] [2022-11-03 01:55:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:07,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:07,451 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 01:55:07,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368364957] [2022-11-03 01:55:07,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368364957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:07,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:07,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:55:07,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841465850] [2022-11-03 01:55:07,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:55:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:07,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:55:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:55:07,506 INFO L87 Difference]: Start difference. First operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 01:55:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:07,669 INFO L93 Difference]: Finished difference Result 239 states and 320 transitions. [2022-11-03 01:55:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:55:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 53 [2022-11-03 01:55:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:07,687 INFO L225 Difference]: With dead ends: 239 [2022-11-03 01:55:07,687 INFO L226 Difference]: Without dead ends: 158 [2022-11-03 01:55:07,694 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 01:55:07,699 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:07,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:07,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-03 01:55:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-11-03 01:55:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:55:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 214 transitions. [2022-11-03 01:55:07,794 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 214 transitions. Word has length 53 [2022-11-03 01:55:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:07,797 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 214 transitions. [2022-11-03 01:55:07,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 01:55:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 214 transitions. [2022-11-03 01:55:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:55:07,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:07,808 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] [2022-11-03 01:55:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:55:07,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash -989384944, now seen corresponding path program 1 times [2022-11-03 01:55:07,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:07,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173678469] [2022-11-03 01:55:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:08,020 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 01:55:08,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173678469] [2022-11-03 01:55:08,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173678469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:08,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:08,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208680122] [2022-11-03 01:55:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:08,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:08,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:08,024 INFO L87 Difference]: Start difference. First operand 158 states and 214 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 01:55:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:08,160 INFO L93 Difference]: Finished difference Result 235 states and 308 transitions. [2022-11-03 01:55:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:08,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2022-11-03 01:55:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:08,167 INFO L225 Difference]: With dead ends: 235 [2022-11-03 01:55:08,168 INFO L226 Difference]: Without dead ends: 160 [2022-11-03 01:55:08,174 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 01:55:08,175 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:08,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-03 01:55:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-03 01:55:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 97 states have internal predecessors, (125), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:55:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 216 transitions. [2022-11-03 01:55:08,198 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 216 transitions. Word has length 54 [2022-11-03 01:55:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:08,199 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 216 transitions. [2022-11-03 01:55:08,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 01:55:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 216 transitions. [2022-11-03 01:55:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 01:55:08,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:08,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:55:08,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1876773738, now seen corresponding path program 1 times [2022-11-03 01:55:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:08,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132214058] [2022-11-03 01:55:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:08,390 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 01:55:08,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:08,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132214058] [2022-11-03 01:55:08,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132214058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:08,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:08,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:08,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724772392] [2022-11-03 01:55:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:08,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:08,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:08,394 INFO L87 Difference]: Start difference. First operand 160 states and 216 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 01:55:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:08,516 INFO L93 Difference]: Finished difference Result 350 states and 491 transitions. [2022-11-03 01:55:08,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:08,517 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 59 [2022-11-03 01:55:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:08,519 INFO L225 Difference]: With dead ends: 350 [2022-11-03 01:55:08,519 INFO L226 Difference]: Without dead ends: 208 [2022-11-03 01:55:08,520 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 01:55:08,520 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 57 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:08,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-03 01:55:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2022-11-03 01:55:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-03 01:55:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2022-11-03 01:55:08,553 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 59 [2022-11-03 01:55:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:08,554 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2022-11-03 01:55:08,554 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 01:55:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2022-11-03 01:55:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 01:55:08,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:08,557 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] [2022-11-03 01:55:08,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:55:08,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -330133817, now seen corresponding path program 1 times [2022-11-03 01:55:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:08,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033022532] [2022-11-03 01:55:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:08,731 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 01:55:08,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:08,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033022532] [2022-11-03 01:55:08,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033022532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575827765] [2022-11-03 01:55:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:08,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:08,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:08,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:08,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:55:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:09,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:55:09,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:09,128 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 01:55:09,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:09,198 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 01:55:09,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575827765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:09,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1556013938] [2022-11-03 01:55:09,221 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-03 01:55:09,221 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:55:09,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:55:09,232 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:55:09,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:55:51,925 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 01:55:52,265 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:55:52,695 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 01:55:54,837 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 01:55:54,877 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-03 01:56:05,689 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 01:56:05,723 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-03 01:56:05,765 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-03 01:56:06,496 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:56:35,170 WARN L234 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:56,469 WARN L234 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 514 DAG size of output: 301 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:12,553 WARN L234 SmtUtils]: Spent 13.41s on a formula simplification. DAG size of input: 575 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:27,305 WARN L234 SmtUtils]: Spent 13.26s on a formula simplification. DAG size of input: 577 DAG size of output: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:12,746 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 567 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:25,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1556013938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:25,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:25,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-03 01:58:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494278271] [2022-11-03 01:58:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 01:58:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 01:58:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2129, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 01:58:25,094 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:58:36,498 WARN L234 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 538 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:43,001 WARN L234 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 541 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:49,818 WARN L234 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 566 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:56,833 WARN L234 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 571 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:03,769 WARN L234 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 563 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:11,194 WARN L234 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 566 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:19,180 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 568 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:36,562 INFO L93 Difference]: Finished difference Result 589 states and 919 transitions. [2022-11-03 01:59:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 01:59:36,563 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 60 [2022-11-03 01:59:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:36,575 INFO L225 Difference]: With dead ends: 589 [2022-11-03 01:59:36,575 INFO L226 Difference]: Without dead ends: 404 [2022-11-03 01:59:36,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 187.6s TimeCoverageRelationStatistics Valid=192, Invalid=2888, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 01:59:36,581 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 322 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 5887 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 5937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:36,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 4853 Invalid, 5937 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [50 Valid, 5887 Invalid, 0 Unknown, 0 Unchecked, 21.7s Time] [2022-11-03 01:59:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-03 01:59:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 307. [2022-11-03 01:59:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 216 states have (on average 1.4537037037037037) internal successors, (314), 218 states have internal predecessors, (314), 67 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (67), 64 states have call predecessors, (67), 66 states have call successors, (67) [2022-11-03 01:59:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 448 transitions. [2022-11-03 01:59:36,829 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 448 transitions. Word has length 60 [2022-11-03 01:59:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:36,830 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 448 transitions. [2022-11-03 01:59:36,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:59:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 448 transitions. [2022-11-03 01:59:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:59:36,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:36,833 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] [2022-11-03 01:59:36,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:37,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:37,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:37,061 INFO L85 PathProgramCache]: Analyzing trace with hash 858497718, now seen corresponding path program 1 times [2022-11-03 01:59:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:37,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025458101] [2022-11-03 01:59:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:37,187 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 01:59:37,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:37,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025458101] [2022-11-03 01:59:37,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025458101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:37,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:37,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:37,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102790769] [2022-11-03 01:59:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:37,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:37,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:37,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:37,191 INFO L87 Difference]: Start difference. First operand 307 states and 448 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:59:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:37,560 INFO L93 Difference]: Finished difference Result 687 states and 1030 transitions. [2022-11-03 01:59:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:37,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2022-11-03 01:59:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:37,564 INFO L225 Difference]: With dead ends: 687 [2022-11-03 01:59:37,564 INFO L226 Difference]: Without dead ends: 422 [2022-11-03 01:59:37,565 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 01:59:37,566 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 55 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:37,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 392 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:59:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-03 01:59:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 415. [2022-11-03 01:59:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 299 states have (on average 1.4849498327759196) internal successors, (444), 301 states have internal predecessors, (444), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (92), 89 states have call predecessors, (92), 91 states have call successors, (92) [2022-11-03 01:59:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 628 transitions. [2022-11-03 01:59:37,780 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 628 transitions. Word has length 65 [2022-11-03 01:59:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:37,780 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 628 transitions. [2022-11-03 01:59:37,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:59:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 628 transitions. [2022-11-03 01:59:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 01:59:37,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:37,783 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] [2022-11-03 01:59:37,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:59:37,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1800698474, now seen corresponding path program 1 times [2022-11-03 01:59:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:37,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660012940] [2022-11-03 01:59:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:37,918 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 01:59:37,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:37,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660012940] [2022-11-03 01:59:37,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660012940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:37,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089875913] [2022-11-03 01:59:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:37,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:37,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:37,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:59:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:59:38,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:38,251 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 01:59:38,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:38,313 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 01:59:38,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089875913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:38,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2144814646] [2022-11-03 01:59:38,318 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-03 01:59:38,318 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:38,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:38,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:38,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:00:26,360 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:00:26,660 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-03 02:00:26,965 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:00:39,334 WARN L234 SmtUtils]: Spent 5.20s 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 02:00:44,967 WARN L234 SmtUtils]: Spent 5.47s 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 02:00:51,158 WARN L234 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:56,882 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:03,635 WARN L234 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:25,045 WARN L234 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 514 DAG size of output: 301 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:44,290 WARN L234 SmtUtils]: Spent 18.92s on a formula simplification. DAG size of input: 583 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:02,383 WARN L234 SmtUtils]: Spent 13.69s on a formula simplification. DAG size of input: 577 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:17,982 WARN L234 SmtUtils]: Spent 13.77s on a formula simplification. DAG size of input: 579 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:34,505 WARN L234 SmtUtils]: Spent 14.49s on a formula simplification. DAG size of input: 577 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:54,955 WARN L234 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 584 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:55,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2144814646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:55,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:55,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:02:55,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13109552] [2022-11-03 02:02:55,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:55,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:02:55,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:55,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:02:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:02:55,260 INFO L87 Difference]: Start difference. First operand 415 states and 628 transitions. Second operand has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-03 02:03:17,261 WARN L234 SmtUtils]: Spent 20.45s on a formula simplification. DAG size of input: 517 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:30,912 WARN L234 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 538 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:38,359 WARN L234 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 541 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:45,671 WARN L234 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 539 DAG size of output: 370 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:58,623 WARN L234 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 487 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:05,373 INFO L93 Difference]: Finished difference Result 799 states and 1249 transitions. [2022-11-03 02:04:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:04:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 66 [2022-11-03 02:04:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:05,380 INFO L225 Difference]: With dead ends: 799 [2022-11-03 02:04:05,381 INFO L226 Difference]: Without dead ends: 524 [2022-11-03 02:04:05,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 208.7s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 02:04:05,386 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 273 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:05,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2481 Invalid, 1817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:04:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-03 02:04:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 471. [2022-11-03 02:04:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 352 states have (on average 1.5) internal successors, (528), 355 states have internal predecessors, (528), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (94), 90 states have call predecessors, (94), 93 states have call successors, (94) [2022-11-03 02:04:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 716 transitions. [2022-11-03 02:04:05,808 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 716 transitions. Word has length 66 [2022-11-03 02:04:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:05,809 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 716 transitions. [2022-11-03 02:04:05,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-03 02:04:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 716 transitions. [2022-11-03 02:04:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:04:05,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:05,812 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] [2022-11-03 02:04:05,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:06,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:06,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:06,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1377916252, now seen corresponding path program 1 times [2022-11-03 02:04:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:06,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906379484] [2022-11-03 02:04:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:06,307 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 02:04:06,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:06,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906379484] [2022-11-03 02:04:06,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906379484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:06,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455696558] [2022-11-03 02:04:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:06,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:06,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:06,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:06,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:04:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:06,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:04:06,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:06,703 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 02:04:06,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:06,798 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 02:04:06,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455696558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:06,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [79553208] [2022-11-03 02:04:06,803 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-03 02:04:06,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:04:06,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:04:06,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:04:06,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:04:43,371 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:04:43,696 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-03 02:04:43,765 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 218 for LOIs [2022-11-03 02:04:43,830 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:04:44,182 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-03 02:04:44,255 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:04:56,807 WARN L234 SmtUtils]: Spent 5.24s 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 02:05:02,453 WARN L234 SmtUtils]: Spent 5.49s 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 02:05:18,832 WARN L234 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:24,395 WARN L234 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 482 DAG size of output: 286 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:43,173 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 514 DAG size of output: 301 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:57,236 WARN L234 SmtUtils]: Spent 13.64s on a formula simplification. DAG size of input: 623 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:16,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [79553208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:16,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:06:16,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-03 02:06:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319565756] [2022-11-03 02:06:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:06:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:06:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:06:16,267 INFO L87 Difference]: Start difference. First operand 471 states and 716 transitions. Second operand has 30 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-03 02:06:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:59,585 INFO L93 Difference]: Finished difference Result 846 states and 1318 transitions. [2022-11-03 02:06:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 02:06:59,586 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 69 [2022-11-03 02:06:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:59,591 INFO L225 Difference]: With dead ends: 846 [2022-11-03 02:06:59,591 INFO L226 Difference]: Without dead ends: 571 [2022-11-03 02:06:59,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 120.2s TimeCoverageRelationStatistics Valid=190, Invalid=1702, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 02:06:59,594 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 171 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:59,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 3097 Invalid, 3078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-11-03 02:06:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-03 02:07:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 510. [2022-11-03 02:07:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 384 states have (on average 1.4921875) internal successors, (573), 388 states have internal predecessors, (573), 98 states have call successors, (98), 28 states have call predecessors, (98), 27 states have return successors, (98), 93 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-03 02:07:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 769 transitions. [2022-11-03 02:07:00,061 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 769 transitions. Word has length 69 [2022-11-03 02:07:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:00,062 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 769 transitions. [2022-11-03 02:07:00,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-03 02:07:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 769 transitions. [2022-11-03 02:07:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:07:00,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:00,066 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 02:07:00,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:00,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash -579625159, now seen corresponding path program 1 times [2022-11-03 02:07:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:00,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028534095] [2022-11-03 02:07:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:00,454 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 02:07:00,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028534095] [2022-11-03 02:07:00,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028534095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352165454] [2022-11-03 02:07:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:00,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:00,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:00,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce344bc-d1c1-4b05-8e28-801f87d338b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:07:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:00,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:00,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:00,843 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 02:07:00,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:00,920 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 02:07:00,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352165454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:00,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [997601003] [2022-11-03 02:07:00,929 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-03 02:07:00,930 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:00,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:00,930 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:00,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs