./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW --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 f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 --- 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-4e7fbc6 [2022-11-23 15:12:04,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:12:04,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:12:04,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:12:04,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:12:04,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:12:04,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:12:04,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:12:04,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:12:04,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:12:04,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:12:04,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:12:04,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:12:04,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:12:04,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:12:04,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:12:04,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:12:04,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:12:04,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:12:04,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:12:04,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:12:04,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:12:05,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:12:05,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:12:05,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:12:05,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:12:05,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:12:05,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:12:05,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:12:05,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:12:05,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:12:05,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:12:05,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:12:05,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:12:05,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:12:05,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:12:05,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:12:05,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:12:05,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:12:05,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:12:05,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:12:05,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:12:05,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:12:05,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:12:05,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:12:05,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:12:05,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:12:05,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:12:05,055 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:12:05,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:12:05,056 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:12:05,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:12:05,056 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:12:05,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:12:05,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:12:05,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:12:05,057 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:12:05,057 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:12:05,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:12:05,058 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:12:05,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:12:05,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:12:05,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:12:05,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:12:05,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:12:05,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:12:05,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:12:05,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:12:05,060 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:12:05,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:12:05,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:12:05,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:12:05,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:12:05,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:12:05,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:12:05,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:12:05,062 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:12:05,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:12:05,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:12:05,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:12:05,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:12:05,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:12:05,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:12:05,066 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_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 [2022-11-23 15:12:05,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:12:05,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:12:05,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:12:05,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:12:05,399 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:12:05,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2022-11-23 15:12:08,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:12:08,850 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:12:08,851 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2022-11-23 15:12:08,876 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/data/66d9d139b/5f51fe336a2c4fa2a19f7d8f629692d9/FLAG3c3162585 [2022-11-23 15:12:08,894 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/data/66d9d139b/5f51fe336a2c4fa2a19f7d8f629692d9 [2022-11-23 15:12:08,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:12:08,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:12:08,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:12:08,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:12:08,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:12:08,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:08" (1/1) ... [2022-11-23 15:12:08,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b5d2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:08, skipping insertion in model container [2022-11-23 15:12:08,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:08" (1/1) ... [2022-11-23 15:12:08,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:12:09,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:12:09,616 WARN L237 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_667294f4-db16-4f79-8e89-09b0e6a29ff1/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2022-11-23 15:12:09,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:12:09,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:12:09,762 WARN L237 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_667294f4-db16-4f79-8e89-09b0e6a29ff1/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2022-11-23 15:12:09,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:12:09,804 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:12:09,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09 WrapperNode [2022-11-23 15:12:09,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:12:09,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:12:09,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:12:09,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:12:09,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:09,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:09,943 INFO L138 Inliner]: procedures = 131, calls = 224, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1089 [2022-11-23 15:12:09,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:12:09,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:12:09,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:12:09,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:12:09,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:09,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:09,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:09,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:10,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:10,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:10,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:10,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:10,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:12:10,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:12:10,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:12:10,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:12:10,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (1/1) ... [2022-11-23 15:12:10,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:12:10,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:12:10,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:12:10,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:12:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 15:12:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 15:12:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:12:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:12:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 15:12:10,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 15:12:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:12:10,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:12:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:12:10,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:12:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:12:10,132 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:12:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:12:10,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:12:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:12:10,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:12:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:12:10,133 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:12:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:12:10,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:12:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:12:10,133 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:12:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:12:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:12:10,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:12:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:12:10,134 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:12:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:12:10,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:12:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:12:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 15:12:10,135 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 15:12:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:12:10,135 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:12:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:12:10,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:12:10,136 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:12:10,136 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:12:10,136 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:12:10,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:12:10,136 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:12:10,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:12:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:12:10,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:12:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:12:10,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:12:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:12:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:12:10,138 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:12:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 15:12:10,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 15:12:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:12:10,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:12:10,451 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:12:10,454 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:12:11,526 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:12:12,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:12:12,152 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:12:12,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:12 BoogieIcfgContainer [2022-11-23 15:12:12,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:12:12,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:12:12,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:12:12,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:12:12,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:12:08" (1/3) ... [2022-11-23 15:12:12,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b54fe33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:12, skipping insertion in model container [2022-11-23 15:12:12,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:09" (2/3) ... [2022-11-23 15:12:12,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b54fe33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:12, skipping insertion in model container [2022-11-23 15:12:12,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:12" (3/3) ... [2022-11-23 15:12:12,170 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product26.cil.c [2022-11-23 15:12:12,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:12:12,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:12:12,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:12:12,263 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;@4eb53366, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:12:12,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:12:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 15:12:12,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 15:12:12,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:12,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:12,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash 120790459, now seen corresponding path program 1 times [2022-11-23 15:12:12,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:12,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909063142] [2022-11-23 15:12:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:12:12,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909063142] [2022-11-23 15:12:12,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909063142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:12,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:12,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:12:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626655664] [2022-11-23 15:12:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:12,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:12:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:12:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:12:12,761 INFO L87 Difference]: Start difference. First operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:12:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:12,954 INFO L93 Difference]: Finished difference Result 310 states and 415 transitions. [2022-11-23 15:12:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:12:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2022-11-23 15:12:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:12,969 INFO L225 Difference]: With dead ends: 310 [2022-11-23 15:12:12,970 INFO L226 Difference]: Without dead ends: 198 [2022-11-23 15:12:12,974 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 [2022-11-23 15:12:12,981 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:12,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-23 15:12:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-23 15:12:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 15:12:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-11-23 15:12:13,051 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 84 [2022-11-23 15:12:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:13,052 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-11-23 15:12:13,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:12:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-11-23 15:12:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:12:13,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:13,057 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:13,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:12:13,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash 458755224, now seen corresponding path program 1 times [2022-11-23 15:12:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:13,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139620420] [2022-11-23 15:12:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:12:13,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139620420] [2022-11-23 15:12:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139620420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:13,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:13,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:12:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533296458] [2022-11-23 15:12:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:13,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:13,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:13,411 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:12:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:13,578 INFO L93 Difference]: Finished difference Result 306 states and 400 transitions. [2022-11-23 15:12:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-23 15:12:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:13,587 INFO L225 Difference]: With dead ends: 306 [2022-11-23 15:12:13,588 INFO L226 Difference]: Without dead ends: 200 [2022-11-23 15:12:13,595 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 [2022-11-23 15:12:13,597 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:13,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-23 15:12:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-23 15:12:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 117 states have internal predecessors, (144), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 15:12:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2022-11-23 15:12:13,637 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 74 [2022-11-23 15:12:13,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:13,638 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2022-11-23 15:12:13,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:12:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2022-11-23 15:12:13,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:12:13,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:13,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:12:13,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1350248299, now seen corresponding path program 1 times [2022-11-23 15:12:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:13,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618075938] [2022-11-23 15:12:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:12:13,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618075938] [2022-11-23 15:12:13,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618075938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:13,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:13,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:12:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747218263] [2022-11-23 15:12:13,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:13,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:13,764 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:12:13,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:13,937 INFO L93 Difference]: Finished difference Result 435 states and 601 transitions. [2022-11-23 15:12:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-23 15:12:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:13,940 INFO L225 Difference]: With dead ends: 435 [2022-11-23 15:12:13,940 INFO L226 Difference]: Without dead ends: 253 [2022-11-23 15:12:13,941 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 [2022-11-23 15:12:13,942 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 59 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:13,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 464 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:12:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-23 15:12:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2022-11-23 15:12:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 151 states have internal predecessors, (199), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 15:12:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 350 transitions. [2022-11-23 15:12:13,969 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 350 transitions. Word has length 79 [2022-11-23 15:12:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:13,969 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 350 transitions. [2022-11-23 15:12:13,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:12:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 350 transitions. [2022-11-23 15:12:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 15:12:13,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:13,973 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:13,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:12:13,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash -184388308, now seen corresponding path program 1 times [2022-11-23 15:12:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:13,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780713043] [2022-11-23 15:12:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:12:14,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:14,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780713043] [2022-11-23 15:12:14,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780713043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:12:14,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048777119] [2022-11-23 15:12:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:14,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:12:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:12:14,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:12:14,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:12:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:14,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:12:14,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:12:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:12:14,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:12:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:12:14,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048777119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:12:14,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [903808220] [2022-11-23 15:12:14,910 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-23 15:12:14,910 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:12:14,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:12:14,919 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:12:14,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:12:58,880 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 15:12:59,225 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:12:59,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:13:35,884 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:42,722 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:48,019 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:56,245 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:16,761 WARN L233 SmtUtils]: Spent 20.20s on a formula simplification. DAG size of input: 589 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:37,391 WARN L233 SmtUtils]: Spent 20.28s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:58,213 WARN L233 SmtUtils]: Spent 20.39s on a formula simplification. DAG size of input: 590 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:18,796 WARN L233 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 588 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:23,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [903808220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:15:23,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:15:23,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 15:15:23,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446227981] [2022-11-23 15:15:23,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:15:23,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 15:15:23,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:15:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 15:15:23,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-23 15:15:23,141 INFO L87 Difference]: Start difference. First operand 248 states and 350 transitions. Second operand has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-23 15:15:35,284 WARN L233 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:45,973 WARN L233 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:57,111 WARN L233 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 518 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:07,722 WARN L233 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 509 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:16:16,193 INFO L93 Difference]: Finished difference Result 547 states and 807 transitions. [2022-11-23 15:16:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 15:16:16,197 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 91 [2022-11-23 15:16:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:16:16,202 INFO L225 Difference]: With dead ends: 547 [2022-11-23 15:16:16,202 INFO L226 Difference]: Without dead ends: 317 [2022-11-23 15:16:16,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 186.2s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:16:16,204 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 129 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:16:16,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 3515 Invalid, 1941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-23 15:16:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-23 15:16:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 276. [2022-11-23 15:16:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 174 states have (on average 1.367816091954023) internal successors, (238), 178 states have internal predecessors, (238), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 15:16:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 389 transitions. [2022-11-23 15:16:16,379 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 389 transitions. Word has length 91 [2022-11-23 15:16:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:16:16,382 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 389 transitions. [2022-11-23 15:16:16,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-23 15:16:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 389 transitions. [2022-11-23 15:16:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 15:16:16,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:16,391 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:16:16,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:16:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:16,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:16:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 990561314, now seen corresponding path program 1 times [2022-11-23 15:16:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:16,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46830420] [2022-11-23 15:16:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:16:16,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:16,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46830420] [2022-11-23 15:16:16,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46830420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:16:16,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730318827] [2022-11-23 15:16:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:16,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:16,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:16:16,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:16:16,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:16:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:17,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:16:17,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:16:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:16:17,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:16:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:16:17,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730318827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:16:17,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708957361] [2022-11-23 15:16:17,312 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-23 15:16:17,312 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:16:17,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:16:17,313 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:16:17,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:16:57,898 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:16:58,193 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-23 15:16:58,476 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-11-23 15:17:00,090 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-11-23 15:17:00,127 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-11-23 15:17:00,814 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 257 for LOIs [2022-11-23 15:17:07,589 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 435 for LOIs [2022-11-23 15:17:08,138 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-23 15:17:11,306 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2022-11-23 15:17:11,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:17:47,053 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:53,971 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:59,367 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:07,622 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:20,662 WARN L233 SmtUtils]: Spent 12.71s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:41,289 WARN L233 SmtUtils]: Spent 20.27s on a formula simplification. DAG size of input: 589 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:03,964 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 468 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:34,853 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 435 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:41,367 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:07,083 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 587 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:13,355 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 588 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:20,563 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 652 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:20,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1708957361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:20,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:20:20,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-23 15:20:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684905231] [2022-11-23 15:20:20,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-23 15:20:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-23 15:20:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2022-11-23 15:20:20,570 INFO L87 Difference]: Start difference. First operand 276 states and 389 transitions. Second operand has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-23 15:20:30,472 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 458 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:50,393 WARN L233 SmtUtils]: Spent 19.42s on a formula simplification. DAG size of input: 504 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:59,228 WARN L233 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 458 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:08,149 WARN L233 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 456 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:15,638 INFO L93 Difference]: Finished difference Result 663 states and 976 transitions. [2022-11-23 15:22:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-23 15:22:15,639 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 86 [2022-11-23 15:22:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:15,643 INFO L225 Difference]: With dead ends: 663 [2022-11-23 15:22:15,643 INFO L226 Difference]: Without dead ends: 433 [2022-11-23 15:22:15,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 275.0s TimeCoverageRelationStatistics Valid=257, Invalid=5293, Unknown=0, NotChecked=0, Total=5550 [2022-11-23 15:22:15,647 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 223 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 6820 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 6858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:15,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 5628 Invalid, 6858 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [38 Valid, 6820 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2022-11-23 15:22:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-23 15:22:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 350. [2022-11-23 15:22:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 230 states have (on average 1.3608695652173912) internal successors, (313), 235 states have internal predecessors, (313), 88 states have call successors, (88), 33 states have call predecessors, (88), 31 states have return successors, (88), 83 states have call predecessors, (88), 87 states have call successors, (88) [2022-11-23 15:22:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 489 transitions. [2022-11-23 15:22:15,912 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 489 transitions. Word has length 86 [2022-11-23 15:22:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:15,912 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 489 transitions. [2022-11-23 15:22:15,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-23 15:22:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 489 transitions. [2022-11-23 15:22:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 15:22:15,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:15,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:15,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:22:16,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:22:16,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2014060439, now seen corresponding path program 1 times [2022-11-23 15:22:16,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:16,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107475692] [2022-11-23 15:22:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:16,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107475692] [2022-11-23 15:22:16,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107475692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:22:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229597448] [2022-11-23 15:22:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:16,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:22:16,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:22:16,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:22:16,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:22:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:22:16,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:22:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:16,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:22:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:16,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229597448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:22:16,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [477770182] [2022-11-23 15:22:16,811 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-23 15:22:16,811 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:22:16,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:22:16,813 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:22:16,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:23:02,560 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 15:23:02,851 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-23 15:23:02,916 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-23 15:23:02,982 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-23 15:23:03,048 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:23:03,337 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:23:20,996 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:39,756 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:46,710 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:52,093 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:24:00,379 WARN L233 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:24:11,269 WARN L233 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 632 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:24:31,515 WARN L233 SmtUtils]: Spent 19.87s on a formula simplification. DAG size of input: 634 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:24:49,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [477770182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:49,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:24:49,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-23 15:24:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70568978] [2022-11-23 15:24:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 15:24:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:24:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 15:24:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 15:24:49,576 INFO L87 Difference]: Start difference. First operand 350 states and 489 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 15:24:56,678 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 528 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:25:07,185 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 558 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:25:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:21,388 INFO L93 Difference]: Finished difference Result 675 states and 983 transitions. [2022-11-23 15:25:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 15:25:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 89 [2022-11-23 15:25:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:21,393 INFO L225 Difference]: With dead ends: 675 [2022-11-23 15:25:21,393 INFO L226 Difference]: Without dead ends: 445 [2022-11-23 15:25:21,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 121.8s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 15:25:21,395 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 99 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 4097 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:21,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 4097 Invalid, 3472 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2022-11-23 15:25:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-23 15:25:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 386. [2022-11-23 15:25:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 260 states have (on average 1.3653846153846154) internal successors, (355), 265 states have internal predecessors, (355), 91 states have call successors, (91), 36 states have call predecessors, (91), 34 states have return successors, (91), 86 states have call predecessors, (91), 90 states have call successors, (91) [2022-11-23 15:25:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 537 transitions. [2022-11-23 15:25:21,686 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 537 transitions. Word has length 89 [2022-11-23 15:25:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:21,687 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 537 transitions. [2022-11-23 15:25:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 15:25:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 537 transitions. [2022-11-23 15:25:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 15:25:21,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:21,692 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:21,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:21,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:21,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -176031617, now seen corresponding path program 1 times [2022-11-23 15:25:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:21,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730065125] [2022-11-23 15:25:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:21,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:25:22,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:22,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730065125] [2022-11-23 15:25:22,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730065125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:25:22,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579522685] [2022-11-23 15:25:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:22,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:22,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:22,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:22,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667294f4-db16-4f79-8e89-09b0e6a29ff1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:25:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:22,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:25:22,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:25:22,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:25:22,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579522685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:22,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1549882676] [2022-11-23 15:25:22,476 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-23 15:25:22,476 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:25:22,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:25:22,477 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:25:22,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs