./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product31.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_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/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_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/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_e5ed7a57-8e1f-40b4-938a-19935cb05269/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 d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:30:15,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:30:15,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:30:15,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:30:15,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:30:15,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:30:15,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:30:15,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:30:15,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:30:15,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:30:15,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:30:15,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:30:15,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:30:15,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:30:15,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:30:15,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:30:15,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:30:15,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:30:15,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:30:15,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:30:15,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:30:15,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:30:15,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:30:15,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:30:15,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:30:15,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:30:15,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:30:15,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:30:15,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:30:15,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:30:15,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:30:15,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:30:15,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:30:15,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:30:15,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:30:15,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:30:15,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:30:15,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:30:15,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:30:15,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:30:15,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:30:15,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:30:15,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:30:15,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:30:15,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:30:15,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:30:15,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:30:15,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:30:15,510 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:30:15,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:30:15,510 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:30:15,510 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:30:15,511 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:30:15,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:30:15,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:30:15,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:30:15,512 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:30:15,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:30:15,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:30:15,513 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:30:15,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:30:15,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:30:15,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:30:15,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:30:15,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:30:15,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:30:15,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:30:15,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:30:15,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:30:15,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:30:15,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:30:15,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:30:15,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:30:15,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:30:15,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:15,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:30:15,519 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:30:15,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:30:15,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:30:15,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:30:15,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:30:15,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:30:15,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:30:15,521 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_e5ed7a57-8e1f-40b4-938a-19935cb05269/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 [2022-11-03 03:30:15,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:30:15,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:30:15,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:30:15,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:30:15,887 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:30:15,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2022-11-03 03:30:15,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/data/63ca1d742/e1c0f05adc4d48c8ad1e01871b70634d/FLAG8045d054b [2022-11-03 03:30:16,588 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:30:16,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2022-11-03 03:30:16,613 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/data/63ca1d742/e1c0f05adc4d48c8ad1e01871b70634d/FLAG8045d054b [2022-11-03 03:30:16,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/data/63ca1d742/e1c0f05adc4d48c8ad1e01871b70634d [2022-11-03 03:30:16,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:30:16,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:30:16,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:16,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:30:16,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:30:16,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:16" (1/1) ... [2022-11-03 03:30:16,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7c7ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:16, skipping insertion in model container [2022-11-03 03:30:16,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:16" (1/1) ... [2022-11-03 03:30:16,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:30:16,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:30:17,511 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_e5ed7a57-8e1f-40b4-938a-19935cb05269/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2022-11-03 03:30:17,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:17,535 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:30:17,623 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_e5ed7a57-8e1f-40b4-938a-19935cb05269/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2022-11-03 03:30:17,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:17,693 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:30:17,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17 WrapperNode [2022-11-03 03:30:17,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:17,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:17,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:30:17,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:30:17,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,798 INFO L138 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1010 [2022-11-03 03:30:17,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:17,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:30:17,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:30:17,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:30:17,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:30:17,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:30:17,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:30:17,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:30:17,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (1/1) ... [2022-11-03 03:30:17,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:17,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:17,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:30:17,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:30:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:30:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:30:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:30:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:30:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:30:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:30:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:30:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:30:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:30:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:30:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:30:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:30:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:30:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:30:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:30:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:30:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:30:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:30:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:30:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:30:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:30:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:30:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:30:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:30:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:30:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:30:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:30:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:30:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:30:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:30:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:30:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:30:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:30:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:30:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:30:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:30:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-03 03:30:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-03 03:30:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 03:30:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 03:30:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:30:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:30:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:30:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:30:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:30:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:30:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:30:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:30:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:30:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:30:18,020 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:30:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:30:18,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:30:18,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:30:18,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:30:19,296 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:30:19,841 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:30:19,842 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:30:19,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:19 BoogieIcfgContainer [2022-11-03 03:30:19,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:30:19,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:30:19,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:30:19,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:30:19,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:30:16" (1/3) ... [2022-11-03 03:30:19,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1025ad9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:19, skipping insertion in model container [2022-11-03 03:30:19,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:17" (2/3) ... [2022-11-03 03:30:19,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1025ad9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:19, skipping insertion in model container [2022-11-03 03:30:19,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:19" (3/3) ... [2022-11-03 03:30:19,854 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2022-11-03 03:30:19,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:30:19,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:30:19,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:30:19,972 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;@39c42ac4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:30:19,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:30:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 124 states have internal predecessors, (157), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 03:30:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 03:30:20,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:20,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:20,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:20,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:20,011 INFO L85 PathProgramCache]: Analyzing trace with hash 160465516, now seen corresponding path program 1 times [2022-11-03 03:30:20,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:20,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665995523] [2022-11-03 03:30:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:20,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:30:20,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:20,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665995523] [2022-11-03 03:30:20,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665995523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:20,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:20,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:30:20,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319719097] [2022-11-03 03:30:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:30:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:20,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:30:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:30:20,539 INFO L87 Difference]: Start difference. First operand has 207 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 124 states have internal predecessors, (157), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:30:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:20,714 INFO L93 Difference]: Finished difference Result 331 states and 436 transitions. [2022-11-03 03:30:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:30:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 92 [2022-11-03 03:30:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:20,728 INFO L225 Difference]: With dead ends: 331 [2022-11-03 03:30:20,728 INFO L226 Difference]: Without dead ends: 204 [2022-11-03 03:30:20,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:30:20,735 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:20,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-03 03:30:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-03 03:30:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 121 states have internal predecessors, (151), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-03 03:30:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 272 transitions. [2022-11-03 03:30:20,792 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 272 transitions. Word has length 92 [2022-11-03 03:30:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:20,794 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 272 transitions. [2022-11-03 03:30:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:30:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 272 transitions. [2022-11-03 03:30:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 03:30:20,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:20,799 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:30:20,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 257125415, now seen corresponding path program 1 times [2022-11-03 03:30:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287285153] [2022-11-03 03:30:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:20,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:30:21,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287285153] [2022-11-03 03:30:21,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287285153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:21,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:21,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222184053] [2022-11-03 03:30:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:21,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:21,115 INFO L87 Difference]: Start difference. First operand 204 states and 272 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:30:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:21,254 INFO L93 Difference]: Finished difference Result 327 states and 424 transitions. [2022-11-03 03:30:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 93 [2022-11-03 03:30:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:21,257 INFO L225 Difference]: With dead ends: 327 [2022-11-03 03:30:21,257 INFO L226 Difference]: Without dead ends: 206 [2022-11-03 03:30:21,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:21,260 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:21,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-03 03:30:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-11-03 03:30:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 120 states have (on average 1.275) internal successors, (153), 123 states have internal predecessors, (153), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-03 03:30:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 274 transitions. [2022-11-03 03:30:21,287 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 274 transitions. Word has length 93 [2022-11-03 03:30:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:21,288 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 274 transitions. [2022-11-03 03:30:21,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:30:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 274 transitions. [2022-11-03 03:30:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 03:30:21,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:21,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:21,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:30:21,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash -291841530, now seen corresponding path program 1 times [2022-11-03 03:30:21,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:21,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989302484] [2022-11-03 03:30:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:21,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:21,500 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 03:30:21,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:21,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989302484] [2022-11-03 03:30:21,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989302484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:21,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:21,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:21,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781563926] [2022-11-03 03:30:21,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:21,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:21,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:21,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:21,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:21,504 INFO L87 Difference]: Start difference. First operand 206 states and 274 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:30:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:21,624 INFO L93 Difference]: Finished difference Result 442 states and 607 transitions. [2022-11-03 03:30:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 98 [2022-11-03 03:30:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:21,628 INFO L225 Difference]: With dead ends: 442 [2022-11-03 03:30:21,628 INFO L226 Difference]: Without dead ends: 254 [2022-11-03 03:30:21,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:21,631 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 57 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:21,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 483 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-03 03:30:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2022-11-03 03:30:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 152 states have (on average 1.355263157894737) internal successors, (206), 155 states have internal predecessors, (206), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 03:30:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 349 transitions. [2022-11-03 03:30:21,661 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 349 transitions. Word has length 98 [2022-11-03 03:30:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:21,662 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 349 transitions. [2022-11-03 03:30:21,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:30:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 349 transitions. [2022-11-03 03:30:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:30:21,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:21,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:30:21,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1897605019, now seen corresponding path program 1 times [2022-11-03 03:30:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:21,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554432223] [2022-11-03 03:30:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:21,929 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 03:30:21,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:21,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554432223] [2022-11-03 03:30:21,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554432223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:30:21,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112755253] [2022-11-03 03:30:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:21,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:21,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:21,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:30:21,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:30:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:22,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:30:22,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:22,417 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 03:30:22,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:22,532 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 03:30:22,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112755253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:22,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385880467] [2022-11-03 03:30:22,563 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-03 03:30:22,564 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:30:22,569 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:30:22,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:30:22,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:30:52,780 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 03:30:53,078 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 03:30:53,418 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:31:06,260 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:31:11,918 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:31:25,790 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 464 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:31:36,740 WARN L234 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 486 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:31:59,255 WARN L234 SmtUtils]: Spent 11.49s on a formula simplification. DAG size of input: 579 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:12,188 WARN L234 SmtUtils]: Spent 11.61s on a formula simplification. DAG size of input: 581 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:35,912 WARN L234 SmtUtils]: Spent 22.35s on a formula simplification. DAG size of input: 580 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:45,132 WARN L234 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 566 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:46,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [385880467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:46,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:32:46,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 03:32:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687594979] [2022-11-03 03:32:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:32:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:32:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:32:46,433 INFO L87 Difference]: Start difference. First operand 249 states and 349 transitions. Second operand has 21 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 03:33:02,184 WARN L234 SmtUtils]: Spent 14.06s on a formula simplification. DAG size of input: 585 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:08,863 INFO L93 Difference]: Finished difference Result 577 states and 859 transitions. [2022-11-03 03:33:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:33:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 99 [2022-11-03 03:33:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:08,866 INFO L225 Difference]: With dead ends: 577 [2022-11-03 03:33:08,866 INFO L226 Difference]: Without dead ends: 346 [2022-11-03 03:33:08,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 127.3s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 03:33:08,869 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 190 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:08,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 3518 Invalid, 1930 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 03:33:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-03 03:33:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 272. [2022-11-03 03:33:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 174 states have (on average 1.3735632183908046) internal successors, (239), 177 states have internal predecessors, (239), 72 states have call successors, (72), 25 states have call predecessors, (72), 25 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 03:33:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 382 transitions. [2022-11-03 03:33:08,991 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 382 transitions. Word has length 99 [2022-11-03 03:33:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:08,992 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 382 transitions. [2022-11-03 03:33:08,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 03:33:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 382 transitions. [2022-11-03 03:33:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:33:08,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:08,995 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:09,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:33:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:09,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash 67457054, now seen corresponding path program 1 times [2022-11-03 03:33:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297549098] [2022-11-03 03:33:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:33:09,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:09,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297549098] [2022-11-03 03:33:09,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297549098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:09,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:09,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501245938] [2022-11-03 03:33:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:09,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:09,323 INFO L87 Difference]: Start difference. First operand 272 states and 382 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:33:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:09,619 INFO L93 Difference]: Finished difference Result 637 states and 928 transitions. [2022-11-03 03:33:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 104 [2022-11-03 03:33:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:09,624 INFO L225 Difference]: With dead ends: 637 [2022-11-03 03:33:09,624 INFO L226 Difference]: Without dead ends: 389 [2022-11-03 03:33:09,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:09,628 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 55 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:09,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 493 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-03 03:33:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 384. [2022-11-03 03:33:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 261 states have (on average 1.4367816091954022) internal successors, (375), 264 states have internal predecessors, (375), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-03 03:33:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 568 transitions. [2022-11-03 03:33:09,822 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 568 transitions. Word has length 104 [2022-11-03 03:33:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:09,823 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 568 transitions. [2022-11-03 03:33:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:33:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 568 transitions. [2022-11-03 03:33:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 03:33:09,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:09,826 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:33:09,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash -669557606, now seen corresponding path program 1 times [2022-11-03 03:33:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:09,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710506406] [2022-11-03 03:33:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:33:09,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:09,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710506406] [2022-11-03 03:33:09,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710506406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:09,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957702775] [2022-11-03 03:33:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:09,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:09,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:09,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:10,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:33:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:10,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:33:10,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:33:10,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:33:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:33:10,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957702775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:33:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [139481192] [2022-11-03 03:33:10,467 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2022-11-03 03:33:10,468 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:33:10,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:33:10,469 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:33:10,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:33:54,552 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 03:33:54,863 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-03 03:33:55,162 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:34:08,634 WARN L234 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:14,449 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:20,803 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:26,805 WARN L234 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:32,919 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 464 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:44,241 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 486 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:54,600 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 508 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:08,870 WARN L234 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 579 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:35,165 WARN L234 SmtUtils]: Spent 9.63s on a formula simplification. DAG size of input: 580 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:35,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [139481192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:35,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:35,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 03:35:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160433600] [2022-11-03 03:35:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:35,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 03:35:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 03:35:35,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:35:35,391 INFO L87 Difference]: Start difference. First operand 384 states and 568 transitions. Second operand has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-03 03:36:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:14,640 INFO L93 Difference]: Finished difference Result 863 states and 1336 transitions. [2022-11-03 03:36:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:36:14,641 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 105 [2022-11-03 03:36:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:14,645 INFO L225 Difference]: With dead ends: 863 [2022-11-03 03:36:14,645 INFO L226 Difference]: Without dead ends: 542 [2022-11-03 03:36:14,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 287 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 128.6s TimeCoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:36:14,647 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 272 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:14,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 3553 Invalid, 2380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-03 03:36:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-03 03:36:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 446. [2022-11-03 03:36:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 319 states have (on average 1.4858934169278997) internal successors, (474), 324 states have internal predecessors, (474), 100 states have call successors, (100), 26 states have call predecessors, (100), 26 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-03 03:36:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 673 transitions. [2022-11-03 03:36:14,914 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 673 transitions. Word has length 105 [2022-11-03 03:36:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:14,914 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 673 transitions. [2022-11-03 03:36:14,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-03 03:36:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 673 transitions. [2022-11-03 03:36:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 03:36:14,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:14,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:14,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:15,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:15,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash -616181600, now seen corresponding path program 1 times [2022-11-03 03:36:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:15,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43462893] [2022-11-03 03:36:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,379 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 03:36:15,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:15,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43462893] [2022-11-03 03:36:15,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43462893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803873829] [2022-11-03 03:36:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:15,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:15,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:15,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:15,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5ed7a57-8e1f-40b4-938a-19935cb05269/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:36:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:36:15,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:15,805 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 03:36:15,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:15,902 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 03:36:15,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803873829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:36:15,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277877915] [2022-11-03 03:36:15,906 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2022-11-03 03:36:15,907 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:15,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:15,908 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:15,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:54,016 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:37:54,309 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-11-03 03:37:54,594 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-11-03 03:37:54,864 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 238 for LOIs [2022-11-03 03:37:56,329 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-03 03:37:56,388 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-11-03 03:37:56,418 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 03:37:56,697 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 240 for LOIs [2022-11-03 03:38:29,003 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 222 for LOIs [2022-11-03 03:38:29,564 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 222 for LOIs [2022-11-03 03:38:29,597 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 399 for LOIs [2022-11-03 03:38:30,044 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 220 for LOIs [2022-11-03 03:38:30,105 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 218 for LOIs [2022-11-03 03:38:30,137 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 420 for LOIs [2022-11-03 03:38:31,572 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 222 for LOIs [2022-11-03 03:38:31,621 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:45,431 WARN L234 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:51,998 WARN L234 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:06,705 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 464 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:18,340 WARN L234 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 486 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:46,756 WARN L234 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 528 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:09,315 WARN L234 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 523 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:31,763 WARN L234 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 526 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:48,160 WARN L234 SmtUtils]: Spent 11.75s on a formula simplification. DAG size of input: 420 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:12,165 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 399 DAG size of output: 240 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:20,272 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 425 DAG size of output: 256 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:03,821 WARN L234 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 541 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:47,225 WARN L234 SmtUtils]: Spent 18.14s on a formula simplification. DAG size of input: 592 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:00,726 WARN L234 SmtUtils]: Spent 11.74s on a formula simplification. DAG size of input: 589 DAG size of output: 477 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)