./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/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_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/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_36c86f78-7c71-4df9-89f5-901b0c486ade/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 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 --- 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 01:58:05,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:58:05,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:58:05,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:58:05,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:58:05,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:58:05,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:58:05,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:58:05,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:58:05,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:58:05,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:58:05,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:58:05,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:58:05,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:58:05,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:58:05,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:58:05,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:58:05,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:58:05,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:58:05,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:58:05,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:58:05,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:58:05,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:58:05,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:58:05,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:58:05,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:58:05,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:58:05,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:58:05,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:58:05,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:58:05,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:58:05,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:58:05,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:58:05,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:58:05,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:58:05,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:58:05,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:58:05,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:58:05,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:58:05,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:58:05,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:58:05,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:58:05,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:58:05,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:58:05,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:58:05,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:58:05,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:58:05,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:58:05,648 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:58:05,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:58:05,649 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:58:05,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:58:05,650 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:58:05,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:58:05,651 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:58:05,651 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:58:05,651 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:58:05,651 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:58:05,652 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:58:05,652 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:58:05,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:58:05,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:58:05,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:58:05,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:58:05,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:58:05,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:58:05,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:58:05,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:58:05,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:58:05,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:58:05,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:58:05,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:58:05,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:58:05,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:58:05,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:58:05,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:58:05,658 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:58:05,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:58:05,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:58:05,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:58:05,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:58:05,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:58:05,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:58:05,661 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_36c86f78-7c71-4df9-89f5-901b0c486ade/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 [2022-11-03 01:58:05,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:58:05,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:58:06,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:58:06,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:58:06,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:58:06,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2022-11-03 01:58:06,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/data/eb3e28f9e/820f46f7c01344719e0a4bd70d11aae3/FLAG881a08ec8 [2022-11-03 01:58:06,765 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:58:06,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2022-11-03 01:58:06,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/data/eb3e28f9e/820f46f7c01344719e0a4bd70d11aae3/FLAG881a08ec8 [2022-11-03 01:58:06,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/data/eb3e28f9e/820f46f7c01344719e0a4bd70d11aae3 [2022-11-03 01:58:06,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:58:06,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:58:06,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:58:06,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:58:06,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:58:06,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:06" (1/1) ... [2022-11-03 01:58:06,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e47e272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:06, skipping insertion in model container [2022-11-03 01:58:06,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:06" (1/1) ... [2022-11-03 01:58:06,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:58:07,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:58:07,469 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_36c86f78-7c71-4df9-89f5-901b0c486ade/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-11-03 01:58:07,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:58:07,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:58:07,810 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_36c86f78-7c71-4df9-89f5-901b0c486ade/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-11-03 01:58:07,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:58:07,875 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:58:07,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07 WrapperNode [2022-11-03 01:58:07,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:58:07,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:58:07,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:58:07,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:58:07,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:07,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:07,983 INFO L138 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 875 [2022-11-03 01:58:07,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:58:07,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:58:07,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:58:07,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:58:07,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:07,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,028 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:58:08,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:58:08,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:58:08,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:58:08,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (1/1) ... [2022-11-03 01:58:08,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:58:08,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:08,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:58:08,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:58:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:58:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:58:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:58:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:58:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:58:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:58:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:58:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:58:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:58:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:58:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:58:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:58:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:58:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:58:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:58:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:58:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:58:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:58:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:58:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:58:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:58:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:58:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:58:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:58:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:58:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:58:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:58:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:58:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:58:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:58:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:58:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:58:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:58:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:58:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:58:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:58:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:58:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:58:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:58:08,387 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:58:08,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:58:09,415 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:58:09,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:58:09,967 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:58:09,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:09 BoogieIcfgContainer [2022-11-03 01:58:09,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:58:09,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:58:09,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:58:09,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:58:09,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:58:06" (1/3) ... [2022-11-03 01:58:09,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438536e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:09, skipping insertion in model container [2022-11-03 01:58:09,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:07" (2/3) ... [2022-11-03 01:58:09,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438536e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:09, skipping insertion in model container [2022-11-03 01:58:09,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:09" (3/3) ... [2022-11-03 01:58:09,988 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2022-11-03 01:58:10,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:58:10,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:58:10,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:58:10,146 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;@7c9cbe9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:58:10,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:58:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 94 states have internal predecessors, (124), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:58:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:58:10,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:10,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:10,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash -926621199, now seen corresponding path program 1 times [2022-11-03 01:58:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:10,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849062702] [2022-11-03 01:58:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:10,704 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 01:58:10,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849062702] [2022-11-03 01:58:10,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849062702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:10,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:10,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:58:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529093105] [2022-11-03 01:58:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:58:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:58:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:58:10,767 INFO L87 Difference]: Start difference. First operand has 151 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 94 states have internal predecessors, (124), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 01:58:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:10,911 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2022-11-03 01:58:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:58:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 56 [2022-11-03 01:58:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:10,936 INFO L225 Difference]: With dead ends: 219 [2022-11-03 01:58:10,936 INFO L226 Difference]: Without dead ends: 148 [2022-11-03 01:58:10,943 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 01:58:10,948 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:10,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-03 01:58:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-03 01:58:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 91 states have internal predecessors, (118), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-03 01:58:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 201 transitions. [2022-11-03 01:58:11,051 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 201 transitions. Word has length 56 [2022-11-03 01:58:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,054 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 201 transitions. [2022-11-03 01:58:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 01:58:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 201 transitions. [2022-11-03 01:58:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:58:11,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:11,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:58:11,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1910243681, now seen corresponding path program 1 times [2022-11-03 01:58:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:11,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995971939] [2022-11-03 01:58:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:11,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,360 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 01:58:11,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:11,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995971939] [2022-11-03 01:58:11,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995971939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:11,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:11,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:11,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509973045] [2022-11-03 01:58:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:11,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:11,373 INFO L87 Difference]: Start difference. First operand 148 states and 201 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 01:58:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:11,497 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2022-11-03 01:58:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 57 [2022-11-03 01:58:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:11,501 INFO L225 Difference]: With dead ends: 215 [2022-11-03 01:58:11,502 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 01:58:11,503 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 01:58:11,505 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:11,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 01:58:11,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-03 01:58:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-03 01:58:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 203 transitions. [2022-11-03 01:58:11,527 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 203 transitions. Word has length 57 [2022-11-03 01:58:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,528 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 203 transitions. [2022-11-03 01:58:11,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 01:58:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 203 transitions. [2022-11-03 01:58:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 01:58:11,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,537 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] [2022-11-03 01:58:11,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:58:11,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -62910922, now seen corresponding path program 1 times [2022-11-03 01:58:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:11,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148752970] [2022-11-03 01:58:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,810 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 01:58:11,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:11,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148752970] [2022-11-03 01:58:11,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148752970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:11,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:11,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:11,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844573446] [2022-11-03 01:58:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:11,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:11,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:11,813 INFO L87 Difference]: Start difference. First operand 150 states and 203 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, (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 01:58:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:11,982 INFO L93 Difference]: Finished difference Result 330 states and 465 transitions. [2022-11-03 01:58:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:11,984 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, (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 62 [2022-11-03 01:58:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:11,989 INFO L225 Difference]: With dead ends: 330 [2022-11-03 01:58:11,989 INFO L226 Difference]: Without dead ends: 198 [2022-11-03 01:58:11,993 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 01:58:12,002 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 57 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:12,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-03 01:58:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2022-11-03 01:58:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 122 states have (on average 1.4180327868852458) internal successors, (173), 125 states have internal predecessors, (173), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 01:58:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 278 transitions. [2022-11-03 01:58:12,036 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 278 transitions. Word has length 62 [2022-11-03 01:58:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:12,038 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 278 transitions. [2022-11-03 01:58:12,038 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, (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 01:58:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 278 transitions. [2022-11-03 01:58:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 01:58:12,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:12,040 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] [2022-11-03 01:58:12,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:58:12,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1177494779, now seen corresponding path program 1 times [2022-11-03 01:58:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:12,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471821063] [2022-11-03 01:58:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:12,280 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 01:58:12,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:12,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471821063] [2022-11-03 01:58:12,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471821063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:12,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265743042] [2022-11-03 01:58:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:12,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:12,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:12,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:58:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:12,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:58:12,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:12,810 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 01:58:12,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:12,902 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 01:58:12,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265743042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:12,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925435243] [2022-11-03 01:58:12,935 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-03 01:58:12,935 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:12,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:12,947 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:12,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:54,038 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:58:54,413 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 01:58:54,714 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 261 for LOIs [2022-11-03 01:58:56,797 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-03 01:58:56,844 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2022-11-03 01:59:01,496 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2022-11-03 01:59:01,530 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-03 01:59:05,343 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:59:33,193 WARN L234 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:45,926 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:51,675 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:00,655 WARN L234 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:14,172 WARN L234 SmtUtils]: Spent 13.18s on a formula simplification. DAG size of input: 587 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:23,745 WARN L234 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 559 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:30,516 WARN L234 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 563 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:37,213 WARN L234 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 559 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:44,094 WARN L234 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 565 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:02,996 WARN L234 SmtUtils]: Spent 14.27s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:37,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [925435243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:37,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:01:37,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 45 [2022-11-03 02:01:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807272666] [2022-11-03 02:01:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 02:01:37,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 02:01:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1866, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 02:01:37,119 INFO L87 Difference]: Start difference. First operand 193 states and 278 transitions. Second operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 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 02:01:50,370 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 449 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:39,507 INFO L93 Difference]: Finished difference Result 547 states and 866 transitions. [2022-11-03 02:02:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 02:02:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 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 63 [2022-11-03 02:02:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:39,511 INFO L225 Difference]: With dead ends: 547 [2022-11-03 02:02:39,511 INFO L226 Difference]: Without dead ends: 372 [2022-11-03 02:02:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 193.6s TimeCoverageRelationStatistics Valid=183, Invalid=2787, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:02:39,514 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 278 mSDsluCounter, 4042 mSDsCounter, 0 mSdLazyCounter, 5012 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 5048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:39,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 4190 Invalid, 5048 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [36 Valid, 5012 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2022-11-03 02:02:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-03 02:02:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2022-11-03 02:02:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.4729064039408868) internal successors, (299), 206 states have internal predecessors, (299), 59 states have call successors, (59), 23 states have call predecessors, (59), 21 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-03 02:02:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 416 transitions. [2022-11-03 02:02:39,676 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 416 transitions. Word has length 63 [2022-11-03 02:02:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:39,677 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 416 transitions. [2022-11-03 02:02:39,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 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 02:02:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 416 transitions. [2022-11-03 02:02:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:02:39,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:39,679 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:39,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:02:39,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:39,886 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1162291949, now seen corresponding path program 1 times [2022-11-03 02:02:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:39,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348681308] [2022-11-03 02:02:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:39,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:39,964 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 02:02:39,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:39,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348681308] [2022-11-03 02:02:39,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348681308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:39,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:39,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741470001] [2022-11-03 02:02:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:39,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:39,967 INFO L87 Difference]: Start difference. First operand 284 states and 416 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 02:02:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:40,299 INFO L93 Difference]: Finished difference Result 635 states and 957 transitions. [2022-11-03 02:02:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 68 [2022-11-03 02:02:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:40,304 INFO L225 Difference]: With dead ends: 635 [2022-11-03 02:02:40,304 INFO L226 Difference]: Without dead ends: 398 [2022-11-03 02:02:40,305 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 02:02:40,306 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 55 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:40,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 367 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-03 02:02:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2022-11-03 02:02:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 285 states have (on average 1.4982456140350877) internal successors, (427), 288 states have internal predecessors, (427), 84 states have call successors, (84), 23 states have call predecessors, (84), 21 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-03 02:02:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 594 transitions. [2022-11-03 02:02:40,510 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 594 transitions. Word has length 68 [2022-11-03 02:02:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:40,510 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 594 transitions. [2022-11-03 02:02:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 02:02:40,511 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 594 transitions. [2022-11-03 02:02:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:02:40,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:40,513 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:40,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:02:40,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:40,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash 285726159, now seen corresponding path program 1 times [2022-11-03 02:02:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:40,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651999781] [2022-11-03 02:02:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:40,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:40,636 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 02:02:40,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:40,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651999781] [2022-11-03 02:02:40,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651999781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:40,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760584129] [2022-11-03 02:02:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:40,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:40,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:40,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:02:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:40,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:02:40,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:40,948 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 02:02:40,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:41,026 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 02:02:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760584129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:41,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260666842] [2022-11-03 02:02:41,031 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-03 02:02:41,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:41,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:41,032 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:41,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:03:13,070 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-03 02:03:13,350 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-03 02:03:13,623 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-11-03 02:03:15,110 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-03 02:03:15,159 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-03 02:03:19,188 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 226 for LOIs [2022-11-03 02:03:19,221 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-03 02:03:20,972 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:03:49,662 WARN L234 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:02,346 WARN L234 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:08,018 WARN L234 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:17,078 WARN L234 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:41,102 WARN L234 SmtUtils]: Spent 22.74s on a formula simplification. DAG size of input: 588 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:03,875 WARN L234 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 472 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:36,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [260666842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:36,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:36,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-03 02:05:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170801429] [2022-11-03 02:05:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:36,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-03 02:05:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-03 02:05:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 02:05:36,854 INFO L87 Difference]: Start difference. First operand 391 states and 594 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:05:59,948 WARN L234 SmtUtils]: Spent 20.83s on a formula simplification. DAG size of input: 483 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:05,417 WARN L234 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 487 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:10,845 WARN L234 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 493 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:16,304 WARN L234 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 489 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:21,832 WARN L234 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 495 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:27,444 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 491 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:33,077 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 497 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:38,662 WARN L234 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 499 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:49,927 WARN L234 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 584 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:00,911 WARN L234 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 586 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:21,601 INFO L93 Difference]: Finished difference Result 784 states and 1215 transitions. [2022-11-03 02:07:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 02:07:21,603 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-11-03 02:07:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:21,606 INFO L225 Difference]: With dead ends: 784 [2022-11-03 02:07:21,606 INFO L226 Difference]: Without dead ends: 519 [2022-11-03 02:07:21,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 220.9s TimeCoverageRelationStatistics Valid=254, Invalid=3528, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 02:07:21,609 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 251 mSDsluCounter, 4146 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 4961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:21,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 4217 Invalid, 4961 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2022-11-03 02:07:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-03 02:07:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 414. [2022-11-03 02:07:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 305 states have (on average 1.498360655737705) internal successors, (457), 309 states have internal predecessors, (457), 86 states have call successors, (86), 24 states have call predecessors, (86), 22 states have return successors, (85), 82 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-03 02:07:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 628 transitions. [2022-11-03 02:07:21,862 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 628 transitions. Word has length 69 [2022-11-03 02:07:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:21,863 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 628 transitions. [2022-11-03 02:07:21,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:07:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 628 transitions. [2022-11-03 02:07:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:07:21,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:21,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:21,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:07:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:22,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1175061797, now seen corresponding path program 1 times [2022-11-03 02:07:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:22,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978751450] [2022-11-03 02:07:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:22,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:22,266 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 02:07:22,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:22,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978751450] [2022-11-03 02:07:22,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978751450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:22,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998843556] [2022-11-03 02:07:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:22,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:22,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:22,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:22,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:07:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:22,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:22,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:22,558 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 02:07:22,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:22,614 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 02:07:22,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998843556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:22,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [392153502] [2022-11-03 02:07:22,618 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-03 02:07:22,619 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:22,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:22,619 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:22,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:07:54,406 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:07:54,702 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-03 02:07:54,761 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-11-03 02:07:54,821 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:07:55,102 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2022-11-03 02:07:55,163 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:08:07,586 WARN L234 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:13,342 WARN L234 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:26,672 WARN L234 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:39,399 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:45,028 WARN L234 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:54,057 WARN L234 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:12,993 WARN L234 SmtUtils]: Spent 18.55s on a formula simplification. DAG size of input: 623 DAG size of output: 483 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:27,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [392153502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:27,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:27,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-03 02:09:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747154997] [2022-11-03 02:09:27,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:27,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:09:27,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:27,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:09:27,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:09:27,440 INFO L87 Difference]: Start difference. First operand 414 states and 628 transitions. Second operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 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 02:09:38,103 WARN L234 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 541 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:43,430 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 485 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:48,826 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 489 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:54,266 WARN L234 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 491 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:08,961 WARN L234 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 560 DAG size of output: 400 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:18,695 INFO L93 Difference]: Finished difference Result 778 states and 1215 transitions. [2022-11-03 02:10:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 02:10:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 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 72 [2022-11-03 02:10:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:18,705 INFO L225 Difference]: With dead ends: 778 [2022-11-03 02:10:18,705 INFO L226 Difference]: Without dead ends: 513 [2022-11-03 02:10:18,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 129.5s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:10:18,710 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 173 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:18,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 3099 Invalid, 3426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 02:10:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-03 02:10:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 451. [2022-11-03 02:10:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 335 states have (on average 1.48955223880597) internal successors, (499), 340 states have internal predecessors, (499), 90 states have call successors, (90), 27 states have call predecessors, (90), 25 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-03 02:10:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 678 transitions. [2022-11-03 02:10:19,093 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 678 transitions. Word has length 72 [2022-11-03 02:10:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:19,094 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 678 transitions. [2022-11-03 02:10:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 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 02:10:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 678 transitions. [2022-11-03 02:10:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:10:19,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:19,097 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:19,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 02:10:19,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:19,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash -893406447, now seen corresponding path program 1 times [2022-11-03 02:10:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:19,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60689542] [2022-11-03 02:10:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:10:19,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:19,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60689542] [2022-11-03 02:10:19,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60689542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:10:19,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007154353] [2022-11-03 02:10:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:19,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:10:19,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:10:19,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c86f78-7c71-4df9-89f5-901b0c486ade/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:10:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:19,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:10:19,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:10:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:10:19,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:10:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:10:19,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007154353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:10:19,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058222538] [2022-11-03 02:10:19,848 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-03 02:10:19,848 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:10:19,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:10:19,849 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:10:19,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs