./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34de882518b863b3a10882f7e6c83b5092b3f8512e5800a72c11385e11ff9a6e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:01:06,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:01:06,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:01:06,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:01:06,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:01:06,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:01:06,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:01:06,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:01:06,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:01:06,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:01:06,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:01:06,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:01:06,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:01:06,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:01:06,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:01:06,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:01:06,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:01:06,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:01:06,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:01:06,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:01:06,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:01:06,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:01:06,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:01:06,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:01:06,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:01:06,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:01:06,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:01:06,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:01:06,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:01:06,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:01:06,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:01:06,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:01:06,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:01:06,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:01:06,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:01:06,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:01:06,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:01:06,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:01:06,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:01:06,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:01:06,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:01:06,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:01:07,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:01:07,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:01:07,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:01:07,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:01:07,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:01:07,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:01:07,034 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:01:07,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:01:07,035 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:01:07,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:01:07,036 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:01:07,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:01:07,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:01:07,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:01:07,037 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:01:07,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:01:07,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:01:07,038 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:01:07,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:01:07,039 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:01:07,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:01:07,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:01:07,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:01:07,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:01:07,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:01:07,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:01:07,040 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:01:07,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:01:07,041 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:01:07,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:01:07,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:01:07,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:01:07,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:07,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:01:07,042 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:01:07,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:01:07,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:01:07,043 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:01:07,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:01:07,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:01:07,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:01:07,045 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_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34de882518b863b3a10882f7e6c83b5092b3f8512e5800a72c11385e11ff9a6e [2022-11-03 02:01:07,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:01:07,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:01:07,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:01:07,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:01:07,330 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:01:07,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c [2022-11-03 02:01:07,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/data/c42802e99/a32df461070547e4833a3cf3ed332fb5/FLAG19369fe04 [2022-11-03 02:01:08,046 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:01:08,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c [2022-11-03 02:01:08,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/data/c42802e99/a32df461070547e4833a3cf3ed332fb5/FLAG19369fe04 [2022-11-03 02:01:08,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/data/c42802e99/a32df461070547e4833a3cf3ed332fb5 [2022-11-03 02:01:08,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:01:08,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:01:08,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:08,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:01:08,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:01:08,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:08" (1/1) ... [2022-11-03 02:01:08,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deab30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:08, skipping insertion in model container [2022-11-03 02:01:08,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:08" (1/1) ... [2022-11-03 02:01:08,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:01:08,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:01:08,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-11-03 02:01:08,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:09,010 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:01:09,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-11-03 02:01:09,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:09,133 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:01:09,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09 WrapperNode [2022-11-03 02:01:09,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:09,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:09,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:01:09,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:01:09,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,212 INFO L138 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 53, calls inlined = 46, statements flattened = 895 [2022-11-03 02:01:09,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:09,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:01:09,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:01:09,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:01:09,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:01:09,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:01:09,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:01:09,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:01:09,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (1/1) ... [2022-11-03 02:01:09,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:09,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:09,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:01:09,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:01:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:01:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:01:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:01:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:01:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:01:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:01:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:01:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:01:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:01:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:01:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:01:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:01:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:01:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:01:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:01:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:01:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:01:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:01:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:01:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:01:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:01:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:01:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:01:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:01:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:01:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:01:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:01:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:01:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:01:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:01:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:01:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:01:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:01:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:01:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:01:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:01:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:01:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:01:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:01:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:01:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:01:09,753 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:01:09,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:01:10,533 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:01:10,976 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:01:10,976 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:01:10,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:10 BoogieIcfgContainer [2022-11-03 02:01:10,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:01:10,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:01:10,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:01:10,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:01:10,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:01:08" (1/3) ... [2022-11-03 02:01:10,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3497984c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:10, skipping insertion in model container [2022-11-03 02:01:10,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:09" (2/3) ... [2022-11-03 02:01:10,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3497984c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:10, skipping insertion in model container [2022-11-03 02:01:10,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:10" (3/3) ... [2022-11-03 02:01:10,993 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.c [2022-11-03 02:01:11,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:01:11,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:01:11,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:01:11,121 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;@64eb3d67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:01:11,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:01:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 02:01:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:01:11,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:11,140 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] [2022-11-03 02:01:11,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2126102577, now seen corresponding path program 1 times [2022-11-03 02:01:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442911277] [2022-11-03 02:01:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:11,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:01:11,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:11,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442911277] [2022-11-03 02:01:11,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442911277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:11,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:11,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:01:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859795412] [2022-11-03 02:01:11,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:01:11,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:01:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:01:11,571 INFO L87 Difference]: Start difference. First operand has 152 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:01:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:11,731 INFO L93 Difference]: Finished difference Result 221 states and 292 transitions. [2022-11-03 02:01:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:01:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-03 02:01:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:11,752 INFO L225 Difference]: With dead ends: 221 [2022-11-03 02:01:11,752 INFO L226 Difference]: Without dead ends: 149 [2022-11-03 02:01:11,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:01:11,764 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:11,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-03 02:01:11,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-03 02:01:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 91 states have internal predecessors, (117), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-03 02:01:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2022-11-03 02:01:11,851 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 66 [2022-11-03 02:01:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:11,853 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2022-11-03 02:01:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:01:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2022-11-03 02:01:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:01:11,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:11,868 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] [2022-11-03 02:01:11,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:01:11,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1259755910, now seen corresponding path program 1 times [2022-11-03 02:01:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589052281] [2022-11-03 02:01:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:01:12,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:12,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589052281] [2022-11-03 02:01:12,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589052281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:12,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:12,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152229026] [2022-11-03 02:01:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:12,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:12,175 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:01:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:12,329 INFO L93 Difference]: Finished difference Result 217 states and 280 transitions. [2022-11-03 02:01:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:12,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2022-11-03 02:01:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:12,331 INFO L225 Difference]: With dead ends: 217 [2022-11-03 02:01:12,332 INFO L226 Difference]: Without dead ends: 151 [2022-11-03 02:01:12,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:12,334 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:12,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-03 02:01:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-03 02:01:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 93 states have internal predecessors, (119), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-03 02:01:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2022-11-03 02:01:12,352 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 67 [2022-11-03 02:01:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:12,352 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2022-11-03 02:01:12,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:01:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2022-11-03 02:01:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:01:12,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:12,356 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] [2022-11-03 02:01:12,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:01:12,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1209431013, now seen corresponding path program 1 times [2022-11-03 02:01:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:12,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751577981] [2022-11-03 02:01:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:12,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:01:12,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:12,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751577981] [2022-11-03 02:01:12,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751577981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:12,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:12,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955457692] [2022-11-03 02:01:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:12,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:12,585 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:01:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:12,725 INFO L93 Difference]: Finished difference Result 332 states and 463 transitions. [2022-11-03 02:01:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-03 02:01:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:12,728 INFO L225 Difference]: With dead ends: 332 [2022-11-03 02:01:12,728 INFO L226 Difference]: Without dead ends: 199 [2022-11-03 02:01:12,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:12,731 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 352 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 [2022-11-03 02:01:12,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 352 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-03 02:01:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 194. [2022-11-03 02:01:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 125 states have internal predecessors, (172), 53 states have call successors, (53), 18 states have call predecessors, (53), 18 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:01:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 277 transitions. [2022-11-03 02:01:12,753 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 277 transitions. Word has length 72 [2022-11-03 02:01:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:12,754 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 277 transitions. [2022-11-03 02:01:12,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:01:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 277 transitions. [2022-11-03 02:01:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:01:12,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:12,757 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] [2022-11-03 02:01:12,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:01:12,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2058511959, now seen corresponding path program 1 times [2022-11-03 02:01:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:12,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265224832] [2022-11-03 02:01:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:01:13,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265224832] [2022-11-03 02:01:13,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265224832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544924215] [2022-11-03 02:01:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:13,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:13,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:13,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:13,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:01:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:13,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:01:13,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:01:13,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:01:13,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544924215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:13,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022851692] [2022-11-03 02:01:13,598 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 02:01:13,598 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:01:13,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:01:13,607 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:01:13,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:01:52,521 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:01:52,823 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:01:53,137 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:41,187 WARN L234 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 508 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:05,498 WARN L234 SmtUtils]: Spent 22.97s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:30,186 WARN L234 SmtUtils]: Spent 23.20s on a formula simplification. DAG size of input: 593 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:47,136 WARN L234 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 545 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:47,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1022851692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:47,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:47,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 02:03:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238119064] [2022-11-03 02:03:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:03:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:03:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:03:47,149 INFO L87 Difference]: Start difference. First operand 194 states and 277 transitions. Second operand has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 02:03:59,106 WARN L234 SmtUtils]: Spent 10.36s on a formula simplification. DAG size of input: 529 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:09,092 WARN L234 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 529 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:20,024 WARN L234 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 591 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:33,228 INFO L93 Difference]: Finished difference Result 471 states and 722 transitions. [2022-11-03 02:04:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:04:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 73 [2022-11-03 02:04:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:33,232 INFO L225 Difference]: With dead ends: 471 [2022-11-03 02:04:33,232 INFO L226 Difference]: Without dead ends: 295 [2022-11-03 02:04:33,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 149.6s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:04:33,235 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 145 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:33,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2461 Invalid, 1773 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [23 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 02:04:33,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-03 02:04:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 222. [2022-11-03 02:04:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 1.4161073825503356) internal successors, (211), 152 states have internal predecessors, (211), 53 states have call successors, (53), 19 states have call predecessors, (53), 19 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:04:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2022-11-03 02:04:33,410 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 73 [2022-11-03 02:04:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:33,411 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2022-11-03 02:04:33,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 02:04:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2022-11-03 02:04:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:04:33,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:33,414 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] [2022-11-03 02:04:33,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:04:33,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:33,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -871564781, now seen corresponding path program 1 times [2022-11-03 02:04:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:33,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849666028] [2022-11-03 02:04:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:04:33,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849666028] [2022-11-03 02:04:33,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849666028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860600759] [2022-11-03 02:04:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:33,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:33,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:33,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:04:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:34,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:04:34,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:04:34,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:04:34,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860600759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:34,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [931249414] [2022-11-03 02:04:34,351 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 02:04:34,351 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:04:34,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:04:34,352 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:04:34,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:05:17,663 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:05:18,073 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 02:05:18,434 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-03 02:05:20,184 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-03 02:05:20,222 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 253 for LOIs [2022-11-03 02:05:26,798 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 448 for LOIs [2022-11-03 02:05:27,433 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-03 02:05:29,344 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:05:43,700 WARN L234 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:51,145 WARN L234 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:07,482 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 464 DAG size of output: 281 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:18,428 WARN L234 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 486 DAG size of output: 277 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:24,068 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 498 DAG size of output: 289 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:33,425 WARN L234 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 508 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:48,909 WARN L234 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:04,881 WARN L234 SmtUtils]: Spent 14.27s on a formula simplification. DAG size of input: 586 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:34,608 WARN L234 SmtUtils]: Spent 28.07s on a formula simplification. DAG size of input: 585 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:04,564 WARN L234 SmtUtils]: Spent 28.10s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:16,575 WARN L234 SmtUtils]: Spent 11.35s on a formula simplification. DAG size of input: 569 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:39,625 WARN L234 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 471 DAG size of output: 262 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:18,226 WARN L234 SmtUtils]: Spent 14.00s on a formula simplification. DAG size of input: 448 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:36,789 WARN L234 SmtUtils]: Spent 15.76s on a formula simplification. DAG size of input: 467 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:00,009 WARN L234 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 555 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [931249414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:10,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:10:10,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 52 [2022-11-03 02:10:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724503135] [2022-11-03 02:10:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-03 02:10:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-03 02:10:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2514, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 02:10:10,589 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand has 47 states, 32 states have (on average 1.28125) internal successors, (41), 30 states have internal predecessors, (41), 15 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-03 02:10:38,316 WARN L234 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 522 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:53,696 WARN L234 SmtUtils]: Spent 14.69s on a formula simplification. DAG size of input: 520 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:00,343 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 494 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:07,551 WARN L234 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 553 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:15,228 WARN L234 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 558 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:22,650 WARN L234 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 560 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:30,431 WARN L234 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 558 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:37,563 WARN L234 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 569 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:46,104 WARN L234 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 560 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:01,778 WARN L234 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 591 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:11,173 WARN L234 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 549 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:19,837 WARN L234 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 554 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:27,923 WARN L234 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 556 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:52,471 INFO L93 Difference]: Finished difference Result 553 states and 836 transitions. [2022-11-03 02:12:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-03 02:12:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 32 states have (on average 1.28125) internal successors, (41), 30 states have internal predecessors, (41), 15 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 79 [2022-11-03 02:12:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:52,480 INFO L225 Difference]: With dead ends: 553 [2022-11-03 02:12:52,482 INFO L226 Difference]: Without dead ends: 377 [2022-11-03 02:12:52,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 416.0s TimeCoverageRelationStatistics Valid=262, Invalid=4568, Unknown=0, NotChecked=0, Total=4830 [2022-11-03 02:12:52,487 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 265 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 5255 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 5308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 5255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:52,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 4405 Invalid, 5308 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [53 Valid, 5255 Invalid, 0 Unknown, 0 Unchecked, 26.2s Time] [2022-11-03 02:12:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-03 02:12:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 293. [2022-11-03 02:12:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 206 states have (on average 1.4368932038834952) internal successors, (296), 211 states have internal predecessors, (296), 62 states have call successors, (62), 25 states have call predecessors, (62), 24 states have return successors, (61), 58 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 02:12:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 419 transitions. [2022-11-03 02:12:52,759 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 419 transitions. Word has length 79 [2022-11-03 02:12:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:52,760 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 419 transitions. [2022-11-03 02:12:52,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 32 states have (on average 1.28125) internal successors, (41), 30 states have internal predecessors, (41), 15 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-03 02:12:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 419 transitions. [2022-11-03 02:12:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:12:52,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:52,763 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] [2022-11-03 02:12:52,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:12:52,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:12:52,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash 345328811, now seen corresponding path program 1 times [2022-11-03 02:12:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:52,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323842532] [2022-11-03 02:12:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:12:53,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:53,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323842532] [2022-11-03 02:12:53,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323842532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:12:53,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598204148] [2022-11-03 02:12:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:53,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:12:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:12:53,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:12:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fbddf7-1d7d-4e10-b50c-e5f50c38db61/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:12:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:12:53,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:12:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:12:53,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:12:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:12:53,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598204148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:12:53,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [678477572] [2022-11-03 02:12:53,707 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:12:53,708 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:12:53,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:12:53,709 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:12:53,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs