./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:57:37,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:57:37,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:57:37,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:57:37,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:57:37,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:57:37,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:57:37,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:57:37,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:57:37,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:57:37,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:57:37,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:57:37,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:57:37,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:57:37,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:57:37,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:57:37,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:57:37,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:57:37,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:57:37,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:57:37,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:57:37,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:57:37,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:57:37,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:57:37,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:57:37,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:57:37,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:57:37,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:57:37,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:57:37,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:57:37,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:57:37,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:57:37,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:57:37,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:57:37,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:57:37,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:57:37,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:57:37,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:57:37,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:57:37,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:57:37,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:57:37,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:57:38,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:57:38,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:57:38,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:57:38,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:57:38,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:57:38,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:57:38,059 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:57:38,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:57:38,060 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:57:38,060 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:57:38,062 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:57:38,062 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:57:38,062 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:57:38,062 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:57:38,063 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:57:38,063 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:57:38,063 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:57:38,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:57:38,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:57:38,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:57:38,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:57:38,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:57:38,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:57:38,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:57:38,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:57:38,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:57:38,067 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:57:38,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:57:38,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:57:38,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:57:38,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:57:38,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:57:38,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:57:38,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:57:38,069 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:57:38,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:57:38,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:57:38,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:57:38,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:57:38,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:57:38,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:57:38,071 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_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 [2022-11-16 19:57:38,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:57:38,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:57:38,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:57:38,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:57:38,455 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:57:38,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2022-11-16 19:57:38,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/data/0664114aa/1981735ae81f4fcebe3b17d4c27fe88d/FLAGa9d7d7307 [2022-11-16 19:57:39,346 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:57:39,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2022-11-16 19:57:39,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/data/0664114aa/1981735ae81f4fcebe3b17d4c27fe88d/FLAGa9d7d7307 [2022-11-16 19:57:39,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/data/0664114aa/1981735ae81f4fcebe3b17d4c27fe88d [2022-11-16 19:57:39,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:57:39,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:57:39,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:57:39,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:57:39,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:57:39,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:57:39" (1/1) ... [2022-11-16 19:57:39,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69437d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:39, skipping insertion in model container [2022-11-16 19:57:39,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:57:39" (1/1) ... [2022-11-16 19:57:39,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:57:39,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:57:40,178 WARN L229 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_aabf07fb-1d39-491e-9069-78407495c32f/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-11-16 19:57:40,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:57:40,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:57:40,464 WARN L229 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_aabf07fb-1d39-491e-9069-78407495c32f/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-11-16 19:57:40,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:57:40,609 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:57:40,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40 WrapperNode [2022-11-16 19:57:40,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:57:40,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:57:40,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:57:40,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:57:40,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,788 INFO L138 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 875 [2022-11-16 19:57:40,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:57:40,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:57:40,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:57:40,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:57:40,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:57:40,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:57:40,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:57:40,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:57:40,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (1/1) ... [2022-11-16 19:57:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:57:40,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:40,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:57:40,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:57:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 19:57:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 19:57:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 19:57:41,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 19:57:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 19:57:41,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 19:57:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 19:57:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 19:57:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 19:57:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 19:57:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 19:57:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 19:57:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 19:57:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 19:57:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 19:57:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 19:57:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 19:57:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 19:57:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 19:57:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:57:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 19:57:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 19:57:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 19:57:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 19:57:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 19:57:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 19:57:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 19:57:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 19:57:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 19:57:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 19:57:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 19:57:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 19:57:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 19:57:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 19:57:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:57:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 19:57:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 19:57:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:57:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:57:41,321 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:57:41,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:57:42,493 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:57:43,052 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:57:43,053 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:57:43,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:57:43 BoogieIcfgContainer [2022-11-16 19:57:43,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:57:43,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:57:43,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:57:43,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:57:43,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:57:39" (1/3) ... [2022-11-16 19:57:43,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108c666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:57:43, skipping insertion in model container [2022-11-16 19:57:43,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:57:40" (2/3) ... [2022-11-16 19:57:43,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108c666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:57:43, skipping insertion in model container [2022-11-16 19:57:43,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:57:43" (3/3) ... [2022-11-16 19:57:43,069 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2022-11-16 19:57:43,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:57:43,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:57:43,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:57:43,210 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;@7fcd55df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:57:43,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:57:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 94 states have internal predecessors, (124), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-16 19:57:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 19:57:43,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:43,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:43,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash -926621199, now seen corresponding path program 1 times [2022-11-16 19:57:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:43,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058440519] [2022-11-16 19:57:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:43,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:57:43,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:43,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058440519] [2022-11-16 19:57:43,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058440519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:43,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:43,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:57:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592800594] [2022-11-16 19:57:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:43,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:57:43,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:57:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:57:43,812 INFO L87 Difference]: Start difference. First operand has 151 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 94 states have internal predecessors, (124), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:57:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:44,001 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2022-11-16 19:57:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:57:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2022-11-16 19:57:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:44,023 INFO L225 Difference]: With dead ends: 219 [2022-11-16 19:57:44,023 INFO L226 Difference]: Without dead ends: 148 [2022-11-16 19:57:44,026 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 [2022-11-16 19:57:44,030 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:44,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-16 19:57:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-16 19:57:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 91 states have internal predecessors, (118), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-16 19:57:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 201 transitions. [2022-11-16 19:57:44,159 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 201 transitions. Word has length 56 [2022-11-16 19:57:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:44,164 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 201 transitions. [2022-11-16 19:57:44,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:57:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 201 transitions. [2022-11-16 19:57:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 19:57:44,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:44,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:57:44,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1910243681, now seen corresponding path program 1 times [2022-11-16 19:57:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:44,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147067386] [2022-11-16 19:57:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:44,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:57:44,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147067386] [2022-11-16 19:57:44,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147067386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:44,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:44,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:57:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200921765] [2022-11-16 19:57:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:44,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:57:44,557 INFO L87 Difference]: Start difference. First operand 148 states and 201 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:57:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:44,738 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2022-11-16 19:57:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2022-11-16 19:57:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:44,749 INFO L225 Difference]: With dead ends: 215 [2022-11-16 19:57:44,749 INFO L226 Difference]: Without dead ends: 150 [2022-11-16 19:57:44,757 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 [2022-11-16 19:57:44,759 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:44,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-16 19:57:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-16 19:57:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-16 19:57:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 203 transitions. [2022-11-16 19:57:44,789 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 203 transitions. Word has length 57 [2022-11-16 19:57:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:44,791 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 203 transitions. [2022-11-16 19:57:44,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:57:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 203 transitions. [2022-11-16 19:57:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 19:57:44,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:44,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:44,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:57:44,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash -62910922, now seen corresponding path program 1 times [2022-11-16 19:57:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:44,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857286595] [2022-11-16 19:57:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:57:45,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:45,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857286595] [2022-11-16 19:57:45,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857286595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:57:45,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:57:45,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:57:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651677861] [2022-11-16 19:57:45,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:57:45,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:57:45,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:57:45,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:57:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:57:45,055 INFO L87 Difference]: Start difference. First operand 150 states and 203 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:57:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:45,174 INFO L93 Difference]: Finished difference Result 330 states and 465 transitions. [2022-11-16 19:57:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:57:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-16 19:57:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:45,178 INFO L225 Difference]: With dead ends: 330 [2022-11-16 19:57:45,178 INFO L226 Difference]: Without dead ends: 198 [2022-11-16 19:57:45,179 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 [2022-11-16 19:57:45,181 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 57 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:45,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:57:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-16 19:57:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2022-11-16 19:57:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 122 states have (on average 1.4180327868852458) internal successors, (173), 125 states have internal predecessors, (173), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-16 19:57:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 278 transitions. [2022-11-16 19:57:45,205 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 278 transitions. Word has length 62 [2022-11-16 19:57:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:45,206 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 278 transitions. [2022-11-16 19:57:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:57:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 278 transitions. [2022-11-16 19:57:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 19:57:45,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:45,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:57:45,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:57:45,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:57:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1177494779, now seen corresponding path program 1 times [2022-11-16 19:57:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:57:45,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848945742] [2022-11-16 19:57:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:45,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:57:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:57:45,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:57:45,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848945742] [2022-11-16 19:57:45,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848945742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:45,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316868452] [2022-11-16 19:57:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:45,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:45,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:45,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:57:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:45,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:57:45,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:57:45,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:57:46,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316868452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:46,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [744604838] [2022-11-16 19:57:46,090 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-16 19:57:46,090 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:57:46,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:57:46,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:57:46,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:58:40,592 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-16 19:58:41,164 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 19:58:41,615 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 261 for LOIs [2022-11-16 19:58:44,438 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-16 19:58:44,493 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2022-11-16 19:58:50,496 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2022-11-16 19:58:50,557 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-16 19:58:55,150 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:59:25,950 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:59:39,325 WARN L233 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:59:45,286 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:59:54,616 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:00:07,780 WARN L233 SmtUtils]: Spent 12.84s on a formula simplification. DAG size of input: 587 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:00:17,988 WARN L233 SmtUtils]: Spent 9.67s on a formula simplification. DAG size of input: 559 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:00:25,200 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 563 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:00:32,371 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 559 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:00:39,779 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 565 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:00:57,741 WARN L233 SmtUtils]: Spent 13.81s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:01:34,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [744604838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:01:34,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:01:34,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 45 [2022-11-16 20:01:34,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388066743] [2022-11-16 20:01:34,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:01:34,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 20:01:34,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:01:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 20:01:34,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1866, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 20:01:34,411 INFO L87 Difference]: Start difference. First operand 193 states and 278 transitions. Second operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 20:01:42,405 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 509 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:01:48,960 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 449 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:01:54,641 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 457 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:02:00,310 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 453 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:02:06,207 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 459 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:02:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:02:43,494 INFO L93 Difference]: Finished difference Result 547 states and 866 transitions. [2022-11-16 20:02:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 20:02:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 63 [2022-11-16 20:02:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:02:43,501 INFO L225 Difference]: With dead ends: 547 [2022-11-16 20:02:43,501 INFO L226 Difference]: Without dead ends: 372 [2022-11-16 20:02:43,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 204.5s TimeCoverageRelationStatistics Valid=183, Invalid=2787, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 20:02:43,504 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 282 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 5012 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:02:43,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 4190 Invalid, 5044 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 5012 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2022-11-16 20:02:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-16 20:02:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2022-11-16 20:02:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.4729064039408868) internal successors, (299), 206 states have internal predecessors, (299), 59 states have call successors, (59), 23 states have call predecessors, (59), 21 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-16 20:02:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 416 transitions. [2022-11-16 20:02:43,734 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 416 transitions. Word has length 63 [2022-11-16 20:02:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:02:43,734 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 416 transitions. [2022-11-16 20:02:43,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 20:02:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 416 transitions. [2022-11-16 20:02:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 20:02:43,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:02:43,738 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:02:43,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:02:43,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:02:43,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:02:43,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:02:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1162291949, now seen corresponding path program 1 times [2022-11-16 20:02:43,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:02:43,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752259755] [2022-11-16 20:02:43,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:02:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:02:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:02:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:02:44,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:02:44,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752259755] [2022-11-16 20:02:44,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752259755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:02:44,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:02:44,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:02:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9644265] [2022-11-16 20:02:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:02:44,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:02:44,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:02:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:02:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:02:44,080 INFO L87 Difference]: Start difference. First operand 284 states and 416 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 20:02:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:02:44,495 INFO L93 Difference]: Finished difference Result 635 states and 957 transitions. [2022-11-16 20:02:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:02:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-11-16 20:02:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:02:44,500 INFO L225 Difference]: With dead ends: 635 [2022-11-16 20:02:44,500 INFO L226 Difference]: Without dead ends: 398 [2022-11-16 20:02:44,501 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 [2022-11-16 20:02:44,503 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 55 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:02:44,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 367 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:02:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-16 20:02:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2022-11-16 20:02:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 285 states have (on average 1.4982456140350877) internal successors, (427), 288 states have internal predecessors, (427), 84 states have call successors, (84), 23 states have call predecessors, (84), 21 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-16 20:02:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 594 transitions. [2022-11-16 20:02:44,779 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 594 transitions. Word has length 68 [2022-11-16 20:02:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:02:44,780 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 594 transitions. [2022-11-16 20:02:44,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 20:02:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 594 transitions. [2022-11-16 20:02:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 20:02:44,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:02:44,783 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:02:44,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:02:44,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:02:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:02:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash 285726159, now seen corresponding path program 1 times [2022-11-16 20:02:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:02:44,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194964497] [2022-11-16 20:02:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:02:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:02:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:02:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:02:44,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:02:44,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194964497] [2022-11-16 20:02:44,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194964497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:02:44,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891826648] [2022-11-16 20:02:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:02:44,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:02:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:02:44,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:02:44,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:02:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:02:45,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:02:45,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:02:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:02:45,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:02:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:02:45,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891826648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:02:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [573485721] [2022-11-16 20:02:45,384 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-16 20:02:45,385 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:02:45,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:02:45,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:02:45,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:03:21,049 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-16 20:03:21,360 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-16 20:03:21,667 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-11-16 20:03:23,288 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-16 20:03:23,326 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-16 20:03:27,670 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 226 for LOIs [2022-11-16 20:03:27,707 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-16 20:03:29,609 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:03:59,835 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:04:12,881 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:04:18,634 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:04:27,890 WARN L233 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:04:48,734 WARN L233 SmtUtils]: Spent 20.52s on a formula simplification. DAG size of input: 588 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:05:08,784 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 472 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:05:42,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [573485721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:42,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:05:42,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-16 20:05:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047217406] [2022-11-16 20:05:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:42,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 20:05:42,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 20:05:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 20:05:42,382 INFO L87 Difference]: Start difference. First operand 391 states and 594 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 20:06:06,285 WARN L233 SmtUtils]: Spent 21.20s on a formula simplification. DAG size of input: 483 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:12,204 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 487 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:18,396 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 493 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:24,834 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 489 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:31,091 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 495 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:37,426 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 491 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:43,629 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 497 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:50,195 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 499 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:02,556 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 584 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:14,851 WARN L233 SmtUtils]: Spent 11.16s on a formula simplification. DAG size of input: 586 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:40,121 INFO L93 Difference]: Finished difference Result 784 states and 1215 transitions. [2022-11-16 20:07:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 20:07:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-11-16 20:07:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:40,127 INFO L225 Difference]: With dead ends: 784 [2022-11-16 20:07:40,127 INFO L226 Difference]: Without dead ends: 519 [2022-11-16 20:07:40,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 226.6s TimeCoverageRelationStatistics Valid=254, Invalid=3528, Unknown=0, NotChecked=0, Total=3782 [2022-11-16 20:07:40,131 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 255 mSDsluCounter, 4007 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 4957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:40,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 4217 Invalid, 4957 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [33 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2022-11-16 20:07:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-16 20:07:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 414. [2022-11-16 20:07:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 305 states have (on average 1.498360655737705) internal successors, (457), 309 states have internal predecessors, (457), 86 states have call successors, (86), 24 states have call predecessors, (86), 22 states have return successors, (85), 82 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-16 20:07:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 628 transitions. [2022-11-16 20:07:40,513 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 628 transitions. Word has length 69 [2022-11-16 20:07:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:40,514 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 628 transitions. [2022-11-16 20:07:40,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 20:07:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 628 transitions. [2022-11-16 20:07:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 20:07:40,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:40,517 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] [2022-11-16 20:07:40,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:07:40,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 20:07:40,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1175061797, now seen corresponding path program 1 times [2022-11-16 20:07:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:40,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609156402] [2022-11-16 20:07:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:40,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:07:40,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:40,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609156402] [2022-11-16 20:07:40,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609156402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:40,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861464157] [2022-11-16 20:07:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:40,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:40,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:07:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:41,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:07:41,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:07:41,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:07:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861464157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:41,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698799902] [2022-11-16 20:07:41,402 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-16 20:07:41,402 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:41,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:41,403 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:41,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:08:21,851 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 20:08:22,167 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-16 20:08:22,248 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-11-16 20:08:22,319 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 20:08:22,744 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2022-11-16 20:08:22,820 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:08:35,944 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:41,811 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:57,259 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:02,962 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 480 DAG size of output: 291 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:12,500 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:18,949 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:29,704 WARN L233 SmtUtils]: Spent 9.25s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:49,007 WARN L233 SmtUtils]: Spent 18.90s on a formula simplification. DAG size of input: 623 DAG size of output: 483 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:06,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [698799902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:10:06,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:10:06,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-16 20:10:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933180313] [2022-11-16 20:10:06,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:10:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 20:10:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 20:10:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 20:10:06,306 INFO L87 Difference]: Start difference. First operand 414 states and 628 transitions. Second operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 20:10:18,842 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 541 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:25,100 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 485 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:31,325 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 489 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:37,723 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 491 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:55,814 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 560 DAG size of output: 400 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:11:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:07,656 INFO L93 Difference]: Finished difference Result 778 states and 1215 transitions. [2022-11-16 20:11:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 20:11:07,664 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 72 [2022-11-16 20:11:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:07,668 INFO L225 Difference]: With dead ends: 778 [2022-11-16 20:11:07,668 INFO L226 Difference]: Without dead ends: 513 [2022-11-16 20:11:07,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 147.5s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 20:11:07,671 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 175 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 3424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:07,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 3099 Invalid, 3424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-11-16 20:11:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-16 20:11:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 451. [2022-11-16 20:11:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 335 states have (on average 1.48955223880597) internal successors, (499), 340 states have internal predecessors, (499), 90 states have call successors, (90), 27 states have call predecessors, (90), 25 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 20:11:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 678 transitions. [2022-11-16 20:11:08,034 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 678 transitions. Word has length 72 [2022-11-16 20:11:08,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:08,035 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 678 transitions. [2022-11-16 20:11:08,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 20:11:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 678 transitions. [2022-11-16 20:11:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 20:11:08,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:08,038 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:08,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:11:08,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:11:08,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -893406447, now seen corresponding path program 1 times [2022-11-16 20:11:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435564181] [2022-11-16 20:11:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:08,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:08,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435564181] [2022-11-16 20:11:08,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435564181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:11:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208810041] [2022-11-16 20:11:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:08,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:11:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:11:08,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:11:08,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabf07fb-1d39-491e-9069-78407495c32f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:11:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:08,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:11:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:11:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:08,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:11:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:11:08,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208810041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:11:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928204508] [2022-11-16 20:11:08,867 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-16 20:11:08,867 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:11:08,867 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:11:08,868 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:11:08,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs