./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product16.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_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/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_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/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_04882644-27f5-42fc-9e8e-055c67aeb9fd/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 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 --- 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 06:32:55,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:32:55,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:32:55,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:32:55,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:32:55,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:32:55,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:32:55,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:32:55,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:32:55,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:32:55,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:32:55,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:32:55,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:32:55,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:32:55,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:32:55,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:32:55,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:32:55,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:32:55,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:32:55,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:32:55,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:32:55,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:32:55,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:32:55,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:32:55,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:32:55,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:32:55,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:32:55,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:32:55,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:32:55,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:32:55,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:32:55,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:32:55,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:32:55,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:32:55,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:32:55,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:32:55,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:32:55,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:32:55,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:32:55,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:32:55,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:32:55,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:32:55,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:32:55,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:32:55,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:32:55,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:32:55,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:32:55,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:32:55,796 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:32:55,797 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:32:55,797 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:32:55,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:32:55,797 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:32:55,798 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:32:55,798 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:32:55,798 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:32:55,799 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:32:55,799 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:32:55,799 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:32:55,799 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:32:55,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:32:55,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:32:55,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:32:55,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:32:55,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:32:55,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:32:55,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:32:55,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:32:55,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:32:55,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:32:55,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:32:55,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:32:55,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:32:55,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:32:55,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:32:55,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:32:55,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:32:55,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:32:55,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:32:55,806 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:32:55,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:32:55,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:32:55,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:32:55,807 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_04882644-27f5-42fc-9e8e-055c67aeb9fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 [2022-11-19 06:32:56,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:32:56,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:32:56,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:32:56,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:32:56,066 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:32:56,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-19 06:32:56,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/data/06ef90a77/5d588cdc73bf4ec28f8d39ef96d03a31/FLAG2ee28cfa2 [2022-11-19 06:32:56,771 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:32:56,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-19 06:32:56,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/data/06ef90a77/5d588cdc73bf4ec28f8d39ef96d03a31/FLAG2ee28cfa2 [2022-11-19 06:32:56,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/data/06ef90a77/5d588cdc73bf4ec28f8d39ef96d03a31 [2022-11-19 06:32:56,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:32:56,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:32:56,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:32:56,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:32:56,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:32:56,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:32:56" (1/1) ... [2022-11-19 06:32:56,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@841668b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:56, skipping insertion in model container [2022-11-19 06:32:56,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:32:56" (1/1) ... [2022-11-19 06:32:57,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:32:57,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:32:57,716 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_04882644-27f5-42fc-9e8e-055c67aeb9fd/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-19 06:32:57,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:32:57,858 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:32:57,954 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_04882644-27f5-42fc-9e8e-055c67aeb9fd/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-19 06:32:58,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:32:58,068 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:32:58,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58 WrapperNode [2022-11-19 06:32:58,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:32:58,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:32:58,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:32:58,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:32:58,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,155 INFO L138 Inliner]: procedures = 126, calls = 203, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 969 [2022-11-19 06:32:58,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:32:58,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:32:58,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:32:58,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:32:58,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,233 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:32:58,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:32:58,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:32:58,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:32:58,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (1/1) ... [2022-11-19 06:32:58,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:32:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:32:58,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:32:58,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:32:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 06:32:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 06:32:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 06:32:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 06:32:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 06:32:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 06:32:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 06:32:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 06:32:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 06:32:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 06:32:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 06:32:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 06:32:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 06:32:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 06:32:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 06:32:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 06:32:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 06:32:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 06:32:58,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 06:32:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:32:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 06:32:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 06:32:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 06:32:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 06:32:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 06:32:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 06:32:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 06:32:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 06:32:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 06:32:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 06:32:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 06:32:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 06:32:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 06:32:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 06:32:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 06:32:58,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 06:32:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:32:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 06:32:58,367 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 06:32:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:32:58,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:32:58,577 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:32:58,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:32:59,628 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:33:00,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:33:00,111 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:33:00,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:00 BoogieIcfgContainer [2022-11-19 06:33:00,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:33:00,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:33:00,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:33:00,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:33:00,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:32:56" (1/3) ... [2022-11-19 06:33:00,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124b4cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:00, skipping insertion in model container [2022-11-19 06:33:00,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:58" (2/3) ... [2022-11-19 06:33:00,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124b4cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:00, skipping insertion in model container [2022-11-19 06:33:00,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:00" (3/3) ... [2022-11-19 06:33:00,128 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.c [2022-11-19 06:33:00,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:33:00,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:33:00,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:33:00,236 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;@6fa8c7dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:33:00,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:33:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 98 states have (on average 1.346938775510204) internal successors, (132), 102 states have internal predecessors, (132), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 06:33:00,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 06:33:00,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:00,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:00,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:00,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1201488115, now seen corresponding path program 1 times [2022-11-19 06:33:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:00,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236784205] [2022-11-19 06:33:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:33:00,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:00,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236784205] [2022-11-19 06:33:00,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236784205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:00,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:00,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:33:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387232371] [2022-11-19 06:33:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:00,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:33:00,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:33:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:33:00,756 INFO L87 Difference]: Start difference. First operand has 167 states, 98 states have (on average 1.346938775510204) internal successors, (132), 102 states have internal predecessors, (132), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:33:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:00,953 INFO L93 Difference]: Finished difference Result 251 states and 338 transitions. [2022-11-19 06:33:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:33:00,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 72 [2022-11-19 06:33:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:00,972 INFO L225 Difference]: With dead ends: 251 [2022-11-19 06:33:00,973 INFO L226 Difference]: Without dead ends: 164 [2022-11-19 06:33:00,979 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 06:33:00,983 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:00,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:33:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-19 06:33:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-19 06:33:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.3125) internal successors, (126), 99 states have internal predecessors, (126), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-19 06:33:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 223 transitions. [2022-11-19 06:33:01,041 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 223 transitions. Word has length 72 [2022-11-19 06:33:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:01,043 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 223 transitions. [2022-11-19 06:33:01,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:33:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 223 transitions. [2022-11-19 06:33:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 06:33:01,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:01,063 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:33:01,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash -711036879, now seen corresponding path program 1 times [2022-11-19 06:33:01,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:01,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209509647] [2022-11-19 06:33:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:33:01,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:01,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209509647] [2022-11-19 06:33:01,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209509647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:01,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:01,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:33:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774832921] [2022-11-19 06:33:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:01,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:01,264 INFO L87 Difference]: Start difference. First operand 164 states and 223 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:33:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:01,385 INFO L93 Difference]: Finished difference Result 247 states and 326 transitions. [2022-11-19 06:33:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 73 [2022-11-19 06:33:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:01,390 INFO L225 Difference]: With dead ends: 247 [2022-11-19 06:33:01,390 INFO L226 Difference]: Without dead ends: 166 [2022-11-19 06:33:01,391 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 06:33:01,392 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:01,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:33:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-19 06:33:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-19 06:33:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-19 06:33:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-11-19 06:33:01,450 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 73 [2022-11-19 06:33:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:01,450 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-11-19 06:33:01,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:33:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-11-19 06:33:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 06:33:01,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:01,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:01,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:33:01,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash -944095922, now seen corresponding path program 1 times [2022-11-19 06:33:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:01,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153807109] [2022-11-19 06:33:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:33:01,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:01,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153807109] [2022-11-19 06:33:01,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153807109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:01,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:01,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:33:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998462240] [2022-11-19 06:33:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:01,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:01,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:01,603 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:33:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:01,728 INFO L93 Difference]: Finished difference Result 362 states and 509 transitions. [2022-11-19 06:33:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:01,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 78 [2022-11-19 06:33:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:01,731 INFO L225 Difference]: With dead ends: 362 [2022-11-19 06:33:01,732 INFO L226 Difference]: Without dead ends: 214 [2022-11-19 06:33:01,733 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 06:33:01,735 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 57 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:01,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 393 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:33:01,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-19 06:33:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2022-11-19 06:33:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 133 states have internal predecessors, (181), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-19 06:33:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 300 transitions. [2022-11-19 06:33:01,756 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 300 transitions. Word has length 78 [2022-11-19 06:33:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:01,757 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 300 transitions. [2022-11-19 06:33:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:33:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 300 transitions. [2022-11-19 06:33:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 06:33:01,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:01,760 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:33:01,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -840321852, now seen corresponding path program 1 times [2022-11-19 06:33:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:01,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087774352] [2022-11-19 06:33:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:33:01,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:01,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087774352] [2022-11-19 06:33:01,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087774352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:33:01,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200654185] [2022-11-19 06:33:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:01,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:33:01,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:33:02,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:33:02,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:33:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:02,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:33:02,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:33:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:33:02,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:33:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:33:02,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200654185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:33:02,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749815397] [2022-11-19 06:33:02,562 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-19 06:33:02,562 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:33:02,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:33:02,573 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:33:02,573 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:33:32,599 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 06:33:32,901 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 06:33:33,214 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2022-11-19 06:33:35,379 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-19 06:33:35,434 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2022-11-19 06:33:52,525 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 455 for LOIs [2022-11-19 06:33:53,088 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-19 06:33:54,920 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2022-11-19 06:33:54,961 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:29,209 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:34:35,340 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:34:48,803 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:34:59,909 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 581 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:35:11,005 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:35:24,325 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 476 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:35:53,403 WARN L233 SmtUtils]: Spent 11.88s on a formula simplification. DAG size of input: 455 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:05,785 WARN L233 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 474 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:28,072 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 573 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:34,819 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 574 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:42,392 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 582 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:44,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [749815397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:36:44,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:36:44,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-11-19 06:36:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795837848] [2022-11-19 06:36:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:36:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-19 06:36:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:36:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-19 06:36:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2417, Unknown=0, NotChecked=0, Total=2550 [2022-11-19 06:36:44,624 INFO L87 Difference]: Start difference. First operand 209 states and 300 transitions. Second operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-19 06:37:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:26,965 INFO L93 Difference]: Finished difference Result 543 states and 828 transitions. [2022-11-19 06:37:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-19 06:37:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 79 [2022-11-19 06:37:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:26,969 INFO L225 Difference]: With dead ends: 543 [2022-11-19 06:37:26,969 INFO L226 Difference]: Without dead ends: 352 [2022-11-19 06:37:26,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 188.3s TimeCoverageRelationStatistics Valid=188, Invalid=3234, Unknown=0, NotChecked=0, Total=3422 [2022-11-19 06:37:26,973 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 177 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 5540 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 4954 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:26,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 4954 Invalid, 5560 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20 Valid, 5540 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2022-11-19 06:37:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-19 06:37:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 301. [2022-11-19 06:37:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 204 states have (on average 1.4362745098039216) internal successors, (293), 208 states have internal predecessors, (293), 72 states have call successors, (72), 25 states have call predecessors, (72), 24 states have return successors, (72), 69 states have call predecessors, (72), 71 states have call successors, (72) [2022-11-19 06:37:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 437 transitions. [2022-11-19 06:37:27,170 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 437 transitions. Word has length 79 [2022-11-19 06:37:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:27,171 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 437 transitions. [2022-11-19 06:37:27,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-19 06:37:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 437 transitions. [2022-11-19 06:37:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 06:37:27,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:27,174 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:37:27,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:37:27,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:37:27,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash 83716972, now seen corresponding path program 1 times [2022-11-19 06:37:27,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:27,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386164745] [2022-11-19 06:37:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:27,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:37:27,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386164745] [2022-11-19 06:37:27,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386164745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:27,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:27,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:37:27,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909997106] [2022-11-19 06:37:27,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:27,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:27,510 INFO L87 Difference]: Start difference. First operand 301 states and 437 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:37:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:27,856 INFO L93 Difference]: Finished difference Result 716 states and 1080 transitions. [2022-11-19 06:37:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 84 [2022-11-19 06:37:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:27,861 INFO L225 Difference]: With dead ends: 716 [2022-11-19 06:37:27,862 INFO L226 Difference]: Without dead ends: 441 [2022-11-19 06:37:27,863 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 06:37:27,864 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 55 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:27,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 411 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:37:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-19 06:37:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 434. [2022-11-19 06:37:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 312 states have (on average 1.5064102564102564) internal successors, (470), 316 states have internal predecessors, (470), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (97), 94 states have call predecessors, (97), 96 states have call successors, (97) [2022-11-19 06:37:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 664 transitions. [2022-11-19 06:37:28,086 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 664 transitions. Word has length 84 [2022-11-19 06:37:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:28,087 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 664 transitions. [2022-11-19 06:37:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:37:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 664 transitions. [2022-11-19 06:37:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 06:37:28,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:28,090 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:37:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:37:28,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash 716444735, now seen corresponding path program 1 times [2022-11-19 06:37:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:28,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612704511] [2022-11-19 06:37:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:37:28,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612704511] [2022-11-19 06:37:28,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612704511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:37:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422271534] [2022-11-19 06:37:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:28,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:37:28,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:28,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:37:28,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:37:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:28,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:37:28,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:37:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:37:28,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:37:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:37:28,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422271534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:37:28,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847182873] [2022-11-19 06:37:28,641 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-19 06:37:28,641 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:37:28,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:37:28,642 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:37:28,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:17,512 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 06:38:17,793 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 06:38:18,113 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:53,607 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:39:12,888 WARN L233 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:39:28,985 WARN L233 SmtUtils]: Spent 15.78s on a formula simplification. DAG size of input: 583 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:39:43,512 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 566 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:39:50,765 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 570 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:00,551 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 570 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:07,407 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 574 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:14,652 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 553 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:25,522 WARN L233 SmtUtils]: Spent 10.44s on a formula simplification. DAG size of input: 584 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:25,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [847182873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:25,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:40:25,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 06:40:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936916360] [2022-11-19 06:40:25,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 06:40:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 06:40:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:40:25,535 INFO L87 Difference]: Start difference. First operand 434 states and 664 transitions. Second operand has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-19 06:40:38,227 WARN L233 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 495 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:44,362 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 515 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:49,926 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 497 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:40:55,347 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 472 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:00,815 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 465 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:07,018 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 443 DAG size of output: 419 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:12,613 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 481 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:21,131 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 514 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:28,865 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 557 DAG size of output: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:35,989 INFO L93 Difference]: Finished difference Result 824 states and 1291 transitions. [2022-11-19 06:41:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 06:41:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 85 [2022-11-19 06:41:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:35,993 INFO L225 Difference]: With dead ends: 824 [2022-11-19 06:41:35,994 INFO L226 Difference]: Without dead ends: 543 [2022-11-19 06:41:35,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 187.2s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 06:41:35,996 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 249 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:35,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 3017 Invalid, 2207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-19 06:41:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-19 06:41:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 466. [2022-11-19 06:41:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 340 states have (on average 1.5029411764705882) internal successors, (511), 346 states have internal predecessors, (511), 100 states have call successors, (100), 26 states have call predecessors, (100), 25 states have return successors, (100), 95 states have call predecessors, (100), 99 states have call successors, (100) [2022-11-19 06:41:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 711 transitions. [2022-11-19 06:41:36,333 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 711 transitions. Word has length 85 [2022-11-19 06:41:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:36,334 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 711 transitions. [2022-11-19 06:41:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-19 06:41:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 711 transitions. [2022-11-19 06:41:36,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 06:41:36,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:36,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:36,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:36,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:36,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:36,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1208627416, now seen corresponding path program 1 times [2022-11-19 06:41:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:36,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738520761] [2022-11-19 06:41:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:36,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:41:36,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738520761] [2022-11-19 06:41:36,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738520761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:41:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899952813] [2022-11-19 06:41:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:36,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:36,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:36,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:41:36,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:41:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:37,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:41:37,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:41:37,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:41:37,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899952813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:37,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627122336] [2022-11-19 06:41:37,224 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-19 06:41:37,224 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:41:37,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:41:37,225 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:41:37,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:43:31,403 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 06:43:31,687 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-11-19 06:43:31,983 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 438 for LOIs [2022-11-19 06:43:32,272 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 282 for LOIs [2022-11-19 06:43:32,398 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 06:43:32,680 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:44:08,394 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:44:27,795 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:44:37,436 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 583 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:44:44,765 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 585 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:06,739 WARN L233 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 545 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:22,281 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 526 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:22,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [627122336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:22,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:45:22,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-19 06:45:22,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791610713] [2022-11-19 06:45:22,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:22,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-19 06:45:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:45:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-19 06:45:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:45:22,290 INFO L87 Difference]: Start difference. First operand 466 states and 711 transitions. Second operand has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-19 06:45:29,343 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 488 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:34,865 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 488 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:40,476 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 492 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:46,057 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:53,918 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 498 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:46:10,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:10,361 INFO L93 Difference]: Finished difference Result 860 states and 1344 transitions. [2022-11-19 06:46:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 06:46:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 88 [2022-11-19 06:46:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:10,365 INFO L225 Difference]: With dead ends: 860 [2022-11-19 06:46:10,365 INFO L226 Difference]: Without dead ends: 579 [2022-11-19 06:46:10,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 143.5s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 06:46:10,368 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 209 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 3171 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:10,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 3202 Invalid, 3191 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3171 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-19 06:46:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-19 06:46:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 506. [2022-11-19 06:46:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 372 states have (on average 1.4946236559139785) internal successors, (556), 380 states have internal predecessors, (556), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (105), 98 states have call predecessors, (105), 104 states have call successors, (105) [2022-11-19 06:46:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 766 transitions. [2022-11-19 06:46:10,748 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 766 transitions. Word has length 88 [2022-11-19 06:46:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:10,749 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 766 transitions. [2022-11-19 06:46:10,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-19 06:46:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 766 transitions. [2022-11-19 06:46:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 06:46:10,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:10,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:10,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:10,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:10,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1693430152, now seen corresponding path program 1 times [2022-11-19 06:46:10,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:10,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548606532] [2022-11-19 06:46:10,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:10,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:46:11,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:11,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548606532] [2022-11-19 06:46:11,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548606532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:46:11,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014412150] [2022-11-19 06:46:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:11,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:11,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:11,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:11,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04882644-27f5-42fc-9e8e-055c67aeb9fd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:46:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:11,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:46:11,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:46:11,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:46:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014412150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [449205693] [2022-11-19 06:46:11,511 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-19 06:46:11,511 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:46:11,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:46:11,512 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:46:11,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs