./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 312fc8529e2c53d6a3be2cb9c54168ebb93fc3f65452574800e27c42fdf03e19 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:36:39,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:36:39,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:36:39,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:36:39,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:36:39,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:36:39,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:36:39,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:36:39,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:36:39,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:36:39,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:36:39,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:36:39,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:36:39,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:36:39,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:36:39,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:36:39,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:36:39,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:36:39,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:36:39,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:36:39,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:36:39,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:36:39,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:36:39,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:36:39,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:36:39,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:36:39,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:36:39,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:36:39,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:36:39,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:36:39,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:36:39,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:36:39,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:36:39,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:36:39,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:36:39,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:36:39,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:36:39,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:36:39,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:36:39,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:36:39,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:36:39,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:36:39,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:36:39,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:36:39,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:36:39,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:36:39,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:36:39,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:36:39,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:36:39,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:36:39,477 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:36:39,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:36:39,478 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:36:39,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:36:39,479 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:36:39,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:36:39,479 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:36:39,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:36:39,480 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:36:39,480 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:36:39,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:36:39,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:36:39,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:36:39,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:36:39,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:36:39,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:36:39,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:36:39,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:36:39,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:36:39,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:36:39,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:36:39,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:36:39,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:36:39,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:36:39,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:36:39,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:36:39,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:36:39,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:36:39,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:36:39,487 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:36:39,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:36:39,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:36:39,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:36:39,489 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_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 312fc8529e2c53d6a3be2cb9c54168ebb93fc3f65452574800e27c42fdf03e19 [2022-11-19 07:36:39,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:36:39,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:36:39,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:36:39,888 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:36:39,889 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:36:39,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c [2022-11-19 07:36:39,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/data/d0d0eb5f6/a6c68710e98545af87049ae7fb258710/FLAG43f59c896 [2022-11-19 07:36:40,663 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:36:40,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c [2022-11-19 07:36:40,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/data/d0d0eb5f6/a6c68710e98545af87049ae7fb258710/FLAG43f59c896 [2022-11-19 07:36:40,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/data/d0d0eb5f6/a6c68710e98545af87049ae7fb258710 [2022-11-19 07:36:40,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:36:40,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:36:40,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:36:40,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:36:40,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:36:40,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:40" (1/1) ... [2022-11-19 07:36:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bcd34b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40, skipping insertion in model container [2022-11-19 07:36:40,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:40" (1/1) ... [2022-11-19 07:36:40,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:36:41,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:36:41,618 WARN L234 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_26c504bb-6e0d-47f5-841d-566d9a77c505/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c[62782,62795] [2022-11-19 07:36:41,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:36:41,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:36:41,732 WARN L234 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_26c504bb-6e0d-47f5-841d-566d9a77c505/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c[62782,62795] [2022-11-19 07:36:41,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:36:41,762 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:36:41,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41 WrapperNode [2022-11-19 07:36:41,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:36:41,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:36:41,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:36:41,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:36:41,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,880 INFO L138 Inliner]: procedures = 130, calls = 206, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1042 [2022-11-19 07:36:41,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:36:41,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:36:41,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:36:41,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:36:41,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:36:41,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:36:41,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:36:41,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:36:41,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2022-11-19 07:36:41,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:36:42,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:42,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:36:42,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:36:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:36:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:36:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:36:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:36:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:36:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:36:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:36:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:36:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:36:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:36:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:36:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:36:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:36:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:36:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:36:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:36:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:36:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:36:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:36:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:36:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:36:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:36:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:36:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:36:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:36:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:36:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:36:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:36:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:36:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:36:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:36:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:36:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:36:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:36:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:36:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:36:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:36:42,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:36:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:36:42,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:36:42,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:36:43,335 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:36:43,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:36:43,832 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:36:43,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:43 BoogieIcfgContainer [2022-11-19 07:36:43,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:36:43,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:36:43,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:36:43,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:36:43,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:40" (1/3) ... [2022-11-19 07:36:43,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a11be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:43, skipping insertion in model container [2022-11-19 07:36:43,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (2/3) ... [2022-11-19 07:36:43,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a11be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:43, skipping insertion in model container [2022-11-19 07:36:43,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:43" (3/3) ... [2022-11-19 07:36:43,845 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product24.cil.c [2022-11-19 07:36:43,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:36:43,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:36:43,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:36:43,934 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;@750a899d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:36:43,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:36:43,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-19 07:36:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 07:36:43,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:43,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:43,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash 456004213, now seen corresponding path program 1 times [2022-11-19 07:36:43,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234111386] [2022-11-19 07:36:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:44,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:44,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234111386] [2022-11-19 07:36:44,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234111386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:44,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:44,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:36:44,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488804281] [2022-11-19 07:36:44,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:44,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:36:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:36:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:36:44,451 INFO L87 Difference]: Start difference. First operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:36:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:44,570 INFO L93 Difference]: Finished difference Result 239 states and 320 transitions. [2022-11-19 07:36:44,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:36:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 53 [2022-11-19 07:36:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:44,583 INFO L225 Difference]: With dead ends: 239 [2022-11-19 07:36:44,583 INFO L226 Difference]: Without dead ends: 158 [2022-11-19 07:36:44,588 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 [2022-11-19 07:36:44,591 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:44,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:44,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-19 07:36:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-11-19 07:36:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-19 07:36:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 214 transitions. [2022-11-19 07:36:44,649 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 214 transitions. Word has length 53 [2022-11-19 07:36:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:44,651 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 214 transitions. [2022-11-19 07:36:44,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:36:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 214 transitions. [2022-11-19 07:36:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:36:44,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:44,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:44,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:36:44,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:44,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash -989384944, now seen corresponding path program 1 times [2022-11-19 07:36:44,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:44,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073998768] [2022-11-19 07:36:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:44,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:44,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:44,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073998768] [2022-11-19 07:36:44,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073998768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:44,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:44,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:36:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262324396] [2022-11-19 07:36:44,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:44,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:44,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:44,929 INFO L87 Difference]: Start difference. First operand 158 states and 214 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:36:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:45,062 INFO L93 Difference]: Finished difference Result 235 states and 308 transitions. [2022-11-19 07:36:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:45,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2022-11-19 07:36:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:45,066 INFO L225 Difference]: With dead ends: 235 [2022-11-19 07:36:45,066 INFO L226 Difference]: Without dead ends: 160 [2022-11-19 07:36:45,067 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 [2022-11-19 07:36:45,069 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:45,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-19 07:36:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-19 07:36:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 97 states have internal predecessors, (125), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-19 07:36:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 216 transitions. [2022-11-19 07:36:45,087 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 216 transitions. Word has length 54 [2022-11-19 07:36:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:45,088 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 216 transitions. [2022-11-19 07:36:45,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:36:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 216 transitions. [2022-11-19 07:36:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-19 07:36:45,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:45,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:45,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:36:45,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1876773738, now seen corresponding path program 1 times [2022-11-19 07:36:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447793808] [2022-11-19 07:36:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:45,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447793808] [2022-11-19 07:36:45,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447793808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:45,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:45,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:36:45,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478057544] [2022-11-19 07:36:45,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:45,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:45,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:45,198 INFO L87 Difference]: Start difference. First operand 160 states and 216 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:36:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:45,339 INFO L93 Difference]: Finished difference Result 350 states and 491 transitions. [2022-11-19 07:36:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 59 [2022-11-19 07:36:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:45,343 INFO L225 Difference]: With dead ends: 350 [2022-11-19 07:36:45,343 INFO L226 Difference]: Without dead ends: 208 [2022-11-19 07:36:45,344 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 [2022-11-19 07:36:45,346 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 57 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:45,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-19 07:36:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2022-11-19 07:36:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-19 07:36:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2022-11-19 07:36:45,370 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 59 [2022-11-19 07:36:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:45,371 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2022-11-19 07:36:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:36:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2022-11-19 07:36:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:36:45,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:45,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:45,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:36:45,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:45,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash -330133817, now seen corresponding path program 1 times [2022-11-19 07:36:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:45,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043084155] [2022-11-19 07:36:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:45,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:45,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:45,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043084155] [2022-11-19 07:36:45,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043084155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:45,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129367708] [2022-11-19 07:36:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:45,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:45,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:45,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:45,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:36:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:36:45,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:46,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:36:46,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129367708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:36:46,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1729904793] [2022-11-19 07:36:46,189 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-19 07:36:46,189 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:36:46,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:36:46,202 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:36:46,207 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:37:28,827 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:37:29,188 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:37:29,491 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-19 07:37:31,493 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 07:37:31,559 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-19 07:37:43,011 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 07:37:43,047 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-19 07:37:43,091 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-19 07:37:43,789 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:38:14,314 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:36,266 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 514 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:48,883 WARN L233 SmtUtils]: Spent 11.00s on a formula simplification. DAG size of input: 575 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:00,238 WARN L233 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 577 DAG size of output: 445 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:47,701 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 567 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:00,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1729904793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:40:00,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:40:00,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-19 07:40:00,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604988087] [2022-11-19 07:40:00,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:40:00,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-19 07:40:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:40:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-19 07:40:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2129, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 07:40:00,691 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:40:12,747 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 538 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:19,637 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 541 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:26,838 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 566 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:34,402 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 571 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:41,865 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 563 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:49,848 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 566 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:58,381 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 568 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:17,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:17,445 INFO L93 Difference]: Finished difference Result 589 states and 919 transitions. [2022-11-19 07:41:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-19 07:41:17,446 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 60 [2022-11-19 07:41:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:17,450 INFO L225 Difference]: With dead ends: 589 [2022-11-19 07:41:17,450 INFO L226 Difference]: Without dead ends: 404 [2022-11-19 07:41:17,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 189.3s TimeCoverageRelationStatistics Valid=192, Invalid=2888, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 07:41:17,454 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 329 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 5887 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 5930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 5887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:17,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 4853 Invalid, 5930 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [43 Valid, 5887 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2022-11-19 07:41:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-19 07:41:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 307. [2022-11-19 07:41:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 216 states have (on average 1.4537037037037037) internal successors, (314), 218 states have internal predecessors, (314), 67 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (67), 64 states have call predecessors, (67), 66 states have call successors, (67) [2022-11-19 07:41:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 448 transitions. [2022-11-19 07:41:17,651 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 448 transitions. Word has length 60 [2022-11-19 07:41:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:17,652 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 448 transitions. [2022-11-19 07:41:17,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:41:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 448 transitions. [2022-11-19 07:41:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:41:17,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:17,656 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:41:17,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:41:17,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:41:17,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:17,863 INFO L85 PathProgramCache]: Analyzing trace with hash 858497718, now seen corresponding path program 1 times [2022-11-19 07:41:17,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:17,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493482140] [2022-11-19 07:41:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:17,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:17,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493482140] [2022-11-19 07:41:17,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493482140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:41:17,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:41:17,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:41:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408871618] [2022-11-19 07:41:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:41:17,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:41:17,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:41:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:41:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:41:17,952 INFO L87 Difference]: Start difference. First operand 307 states and 448 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:41:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:18,371 INFO L93 Difference]: Finished difference Result 687 states and 1030 transitions. [2022-11-19 07:41:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:41:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2022-11-19 07:41:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:18,379 INFO L225 Difference]: With dead ends: 687 [2022-11-19 07:41:18,380 INFO L226 Difference]: Without dead ends: 422 [2022-11-19 07:41:18,381 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 [2022-11-19 07:41:18,383 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 55 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:18,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 392 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:41:18,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-19 07:41:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 415. [2022-11-19 07:41:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 299 states have (on average 1.4849498327759196) internal successors, (444), 301 states have internal predecessors, (444), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (92), 89 states have call predecessors, (92), 91 states have call successors, (92) [2022-11-19 07:41:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 628 transitions. [2022-11-19 07:41:18,634 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 628 transitions. Word has length 65 [2022-11-19 07:41:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:18,635 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 628 transitions. [2022-11-19 07:41:18,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:41:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 628 transitions. [2022-11-19 07:41:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:41:18,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:18,639 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:41:18,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:41:18,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1800698474, now seen corresponding path program 1 times [2022-11-19 07:41:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:18,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263345348] [2022-11-19 07:41:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:18,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:18,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:18,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263345348] [2022-11-19 07:41:18,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263345348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:41:18,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624110788] [2022-11-19 07:41:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:18,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:41:18,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:41:18,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:41:18,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:41:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:19,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:41:19,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:41:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:19,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:41:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:19,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624110788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:41:19,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [382018181] [2022-11-19 07:41:19,196 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-19 07:41:19,196 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:41:19,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:41:19,197 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:41:19,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:42:07,340 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:42:07,634 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:42:07,923 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:42:25,619 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:36,623 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:43,686 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:59,704 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 504 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:07,179 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 514 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:27,319 WARN L233 SmtUtils]: Spent 19.80s on a formula simplification. DAG size of input: 583 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:43,890 WARN L233 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 577 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:57,819 WARN L233 SmtUtils]: Spent 13.46s on a formula simplification. DAG size of input: 579 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:11,338 WARN L233 SmtUtils]: Spent 12.98s on a formula simplification. DAG size of input: 577 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:17,587 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 551 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:23,931 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 553 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:33,527 WARN L233 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 584 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:33,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [382018181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:33,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:44:33,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:44:33,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322353979] [2022-11-19 07:44:33,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:44:33,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:44:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:44:33,778 INFO L87 Difference]: Start difference. First operand 415 states and 628 transitions. Second operand has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-19 07:44:51,376 WARN L233 SmtUtils]: Spent 15.99s on a formula simplification. DAG size of input: 517 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:06,352 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 538 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:14,456 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 541 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:22,501 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 539 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:36,481 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 487 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:43,712 INFO L93 Difference]: Finished difference Result 799 states and 1249 transitions. [2022-11-19 07:45:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-19 07:45:43,714 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 66 [2022-11-19 07:45:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:43,718 INFO L225 Difference]: With dead ends: 799 [2022-11-19 07:45:43,719 INFO L226 Difference]: Without dead ends: 524 [2022-11-19 07:45:43,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 205.5s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:45:43,722 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 275 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:43,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2510 Invalid, 1786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-19 07:45:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-19 07:45:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 471. [2022-11-19 07:45:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 352 states have (on average 1.5) internal successors, (528), 355 states have internal predecessors, (528), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (94), 90 states have call predecessors, (94), 93 states have call successors, (94) [2022-11-19 07:45:44,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 716 transitions. [2022-11-19 07:45:44,117 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 716 transitions. Word has length 66 [2022-11-19 07:45:44,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:44,118 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 716 transitions. [2022-11-19 07:45:44,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-19 07:45:44,118 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 716 transitions. [2022-11-19 07:45:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 07:45:44,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:44,121 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:44,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:45:44,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:45:44,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1377916252, now seen corresponding path program 1 times [2022-11-19 07:45:44,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:44,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135425429] [2022-11-19 07:45:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:44,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:45:44,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:44,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135425429] [2022-11-19 07:45:44,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135425429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:45:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232187288] [2022-11-19 07:45:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:44,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:45:44,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:45:44,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:45:44,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:45:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:44,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:45:44,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:45:44,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:45:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:45:44,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232187288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:45:44,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [866166240] [2022-11-19 07:45:44,979 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-19 07:45:44,979 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:45:44,979 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:45:44,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:45:44,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:46:22,844 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:46:23,173 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-19 07:46:23,253 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 218 for LOIs [2022-11-19 07:46:23,327 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:46:23,669 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-19 07:46:23,758 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:46:38,571 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:44,343 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:01,803 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:07,011 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 482 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:13,767 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 492 DAG size of output: 272 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:20,225 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 504 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:27,970 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 514 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:43,618 WARN L233 SmtUtils]: Spent 15.23s on a formula simplification. DAG size of input: 623 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:03,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [866166240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:03,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:48:03,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 07:48:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128410720] [2022-11-19 07:48:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:03,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 07:48:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:03,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 07:48:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:48:03,318 INFO L87 Difference]: Start difference. First operand 471 states and 716 transitions. Second operand has 30 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-19 07:48:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:49,325 INFO L93 Difference]: Finished difference Result 846 states and 1318 transitions. [2022-11-19 07:48:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-19 07:48:49,326 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 69 [2022-11-19 07:48:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:49,331 INFO L225 Difference]: With dead ends: 846 [2022-11-19 07:48:49,331 INFO L226 Difference]: Without dead ends: 571 [2022-11-19 07:48:49,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 129.7s TimeCoverageRelationStatistics Valid=190, Invalid=1702, Unknown=0, NotChecked=0, Total=1892 [2022-11-19 07:48:49,334 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 174 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:49,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 3097 Invalid, 3075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-11-19 07:48:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-19 07:48:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 510. [2022-11-19 07:48:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 384 states have (on average 1.4921875) internal successors, (573), 388 states have internal predecessors, (573), 98 states have call successors, (98), 28 states have call predecessors, (98), 27 states have return successors, (98), 93 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:48:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 769 transitions. [2022-11-19 07:48:49,750 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 769 transitions. Word has length 69 [2022-11-19 07:48:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:49,750 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 769 transitions. [2022-11-19 07:48:49,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-19 07:48:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 769 transitions. [2022-11-19 07:48:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:48:49,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:49,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:49,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:48:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:49,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -579625159, now seen corresponding path program 1 times [2022-11-19 07:48:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:49,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635523638] [2022-11-19 07:48:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:48:50,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:50,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635523638] [2022-11-19 07:48:50,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635523638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:48:50,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195412179] [2022-11-19 07:48:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:50,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:50,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:48:50,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c504bb-6e0d-47f5-841d-566d9a77c505/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:48:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:48:50,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:48:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:48:50,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:48:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:48:50,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195412179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:48:50,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1883691612] [2022-11-19 07:48:50,611 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-19 07:48:50,611 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:48:50,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:48:50,612 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:48:50,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:58,729 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:49:59,047 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:49:59,392 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs