./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba --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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- 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-b5237d8 [2022-11-22 02:00:24,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:00:24,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:00:24,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:00:24,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:00:24,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:00:24,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:00:24,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:00:24,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:00:24,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:00:24,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:00:24,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:00:24,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:00:24,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:00:24,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:00:24,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:00:24,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:00:24,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:00:24,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:00:24,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:00:24,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:00:24,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:00:24,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:00:24,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:00:24,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:00:24,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:00:24,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:00:24,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:00:25,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:00:25,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:00:25,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:00:25,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:00:25,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:00:25,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:00:25,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:00:25,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:00:25,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:00:25,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:00:25,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:00:25,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:00:25,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:00:25,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:00:25,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:00:25,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:00:25,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:00:25,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:00:25,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:00:25,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:00:25,067 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:00:25,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:00:25,067 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:00:25,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:00:25,069 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:00:25,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:00:25,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:00:25,070 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:00:25,070 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:00:25,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:00:25,071 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:00:25,071 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:00:25,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:00:25,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:00:25,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:00:25,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:00:25,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:00:25,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:00:25,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:00:25,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:00:25,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:00:25,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:00:25,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:00:25,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:00:25,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:00:25,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:00:25,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:00:25,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:00:25,078 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:00:25,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:00:25,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:00:25,079 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:00:25,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:00:25,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:00:25,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:00:25,080 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_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2022-11-22 02:00:25,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:00:25,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:00:25,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:00:25,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:00:25,424 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:00:25,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2022-11-22 02:00:28,626 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:00:29,094 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:00:29,095 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2022-11-22 02:00:29,119 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/data/368ed23a7/c0748d2b858b4c0a9b97cb8f0e772472/FLAG4093fab32 [2022-11-22 02:00:29,136 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/data/368ed23a7/c0748d2b858b4c0a9b97cb8f0e772472 [2022-11-22 02:00:29,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:00:29,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:00:29,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:00:29,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:00:29,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:00:29,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:00:29" (1/1) ... [2022-11-22 02:00:29,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b7286f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:29, skipping insertion in model container [2022-11-22 02:00:29,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:00:29" (1/1) ... [2022-11-22 02:00:29,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:00:29,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:00:29,924 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_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2022-11-22 02:00:29,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:00:29,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:00:30,069 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_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2022-11-22 02:00:30,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:00:30,110 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:00:30,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30 WrapperNode [2022-11-22 02:00:30,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:00:30,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:00:30,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:00:30,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:00:30,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,247 INFO L138 Inliner]: procedures = 151, calls = 280, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1299 [2022-11-22 02:00:30,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:00:30,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:00:30,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:00:30,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:00:30,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:00:30,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:00:30,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:00:30,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:00:30,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (1/1) ... [2022-11-22 02:00:30,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:00:30,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:30,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:00:30,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:00:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-22 02:00:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-22 02:00:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-22 02:00:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-22 02:00:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-22 02:00:30,514 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-22 02:00:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-22 02:00:30,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-22 02:00:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-22 02:00:30,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-22 02:00:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-22 02:00:30,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-22 02:00:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-22 02:00:30,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-22 02:00:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-22 02:00:30,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-22 02:00:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-22 02:00:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-22 02:00:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-22 02:00:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-22 02:00:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-22 02:00:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-22 02:00:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-22 02:00:30,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-22 02:00:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-22 02:00:30,519 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-22 02:00:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-22 02:00:30,520 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-22 02:00:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-22 02:00:30,520 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-22 02:00:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-22 02:00:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-22 02:00:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-22 02:00:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-22 02:00:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-22 02:00:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-22 02:00:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-22 02:00:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-22 02:00:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-22 02:00:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-22 02:00:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-22 02:00:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-22 02:00:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-22 02:00:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-22 02:00:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-22 02:00:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-22 02:00:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-22 02:00:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:00:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-22 02:00:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-22 02:00:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-22 02:00:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-22 02:00:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-22 02:00:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-22 02:00:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-22 02:00:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-22 02:00:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-22 02:00:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-22 02:00:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-22 02:00:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-22 02:00:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-22 02:00:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-22 02:00:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-22 02:00:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-22 02:00:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-22 02:00:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-22 02:00:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-22 02:00:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-22 02:00:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-22 02:00:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-22 02:00:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-22 02:00:30,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-22 02:00:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-22 02:00:30,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-22 02:00:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-22 02:00:30,533 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-22 02:00:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-22 02:00:30,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-22 02:00:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-22 02:00:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-22 02:00:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:00:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-22 02:00:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-22 02:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-22 02:00:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-22 02:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-22 02:00:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-22 02:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-22 02:00:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-22 02:00:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:00:30,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:00:30,846 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:00:30,849 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:00:32,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:00:33,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:00:33,171 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:00:33,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:33 BoogieIcfgContainer [2022-11-22 02:00:33,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:00:33,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:00:33,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:00:33,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:00:33,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:00:29" (1/3) ... [2022-11-22 02:00:33,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327be0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:00:33, skipping insertion in model container [2022-11-22 02:00:33,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:30" (2/3) ... [2022-11-22 02:00:33,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327be0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:00:33, skipping insertion in model container [2022-11-22 02:00:33,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:33" (3/3) ... [2022-11-22 02:00:33,185 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2022-11-22 02:00:33,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:00:33,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:00:33,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:00:33,275 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;@18c94ef7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:00:33,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:00:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-22 02:00:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 02:00:33,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:33,303 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:33,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:33,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1058820502, now seen corresponding path program 1 times [2022-11-22 02:00:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:33,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836449621] [2022-11-22 02:00:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:33,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:00:33,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:33,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836449621] [2022-11-22 02:00:33,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836449621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:33,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:33,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:00:33,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866273405] [2022-11-22 02:00:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:33,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:00:33,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:00:34,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:00:34,025 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:00:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:34,425 INFO L93 Difference]: Finished difference Result 726 states and 994 transitions. [2022-11-22 02:00:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:00:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2022-11-22 02:00:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:34,450 INFO L225 Difference]: With dead ends: 726 [2022-11-22 02:00:34,450 INFO L226 Difference]: Without dead ends: 374 [2022-11-22 02:00:34,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:34,467 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:34,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:00:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-22 02:00:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-22 02:00:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-22 02:00:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2022-11-22 02:00:34,551 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 110 [2022-11-22 02:00:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:34,553 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2022-11-22 02:00:34,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:00:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2022-11-22 02:00:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-22 02:00:34,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:34,559 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:34,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:00:34,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash 699274038, now seen corresponding path program 1 times [2022-11-22 02:00:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:34,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833998667] [2022-11-22 02:00:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:34,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:00:34,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833998667] [2022-11-22 02:00:34,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833998667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:34,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:34,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835048140] [2022-11-22 02:00:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:34,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:34,802 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:00:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:35,036 INFO L93 Difference]: Finished difference Result 719 states and 973 transitions. [2022-11-22 02:00:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:35,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2022-11-22 02:00:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:35,041 INFO L225 Difference]: With dead ends: 719 [2022-11-22 02:00:35,041 INFO L226 Difference]: Without dead ends: 374 [2022-11-22 02:00:35,044 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 [2022-11-22 02:00:35,046 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 467 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:35,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 460 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-22 02:00:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-22 02:00:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 222 states have (on average 1.2747747747747749) internal successors, (283), 239 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2022-11-22 02:00:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 496 transitions. [2022-11-22 02:00:35,088 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 496 transitions. Word has length 121 [2022-11-22 02:00:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:35,088 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 496 transitions. [2022-11-22 02:00:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:00:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 496 transitions. [2022-11-22 02:00:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 02:00:35,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:35,093 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:35,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:00:35,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1531973111, now seen corresponding path program 1 times [2022-11-22 02:00:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:35,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124575964] [2022-11-22 02:00:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:35,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:00:35,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124575964] [2022-11-22 02:00:35,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124575964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:35,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:35,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478016892] [2022-11-22 02:00:35,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:35,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:35,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:35,251 INFO L87 Difference]: Start difference. First operand 374 states and 496 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:00:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:35,583 INFO L93 Difference]: Finished difference Result 1052 states and 1418 transitions. [2022-11-22 02:00:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:35,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 117 [2022-11-22 02:00:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:35,596 INFO L225 Difference]: With dead ends: 1052 [2022-11-22 02:00:35,596 INFO L226 Difference]: Without dead ends: 707 [2022-11-22 02:00:35,603 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 [2022-11-22 02:00:35,608 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 468 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:35,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 963 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-22 02:00:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2022-11-22 02:00:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 418 states have (on average 1.2727272727272727) internal successors, (532), 448 states have internal predecessors, (532), 199 states have call successors, (199), 87 states have call predecessors, (199), 87 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2022-11-22 02:00:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 941 transitions. [2022-11-22 02:00:35,700 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 941 transitions. Word has length 117 [2022-11-22 02:00:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:35,702 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 941 transitions. [2022-11-22 02:00:35,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:00:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 941 transitions. [2022-11-22 02:00:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 02:00:35,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:35,713 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:35,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:00:35,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:35,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 762482393, now seen corresponding path program 1 times [2022-11-22 02:00:35,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:35,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828531507] [2022-11-22 02:00:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:00:35,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:35,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828531507] [2022-11-22 02:00:35,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828531507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:35,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:35,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873163544] [2022-11-22 02:00:35,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:35,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:35,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:35,893 INFO L87 Difference]: Start difference. First operand 705 states and 941 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:00:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:36,057 INFO L93 Difference]: Finished difference Result 707 states and 942 transitions. [2022-11-22 02:00:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 123 [2022-11-22 02:00:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:36,061 INFO L225 Difference]: With dead ends: 707 [2022-11-22 02:00:36,061 INFO L226 Difference]: Without dead ends: 374 [2022-11-22 02:00:36,063 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 [2022-11-22 02:00:36,073 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 448 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:36,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 463 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:00:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-22 02:00:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-22 02:00:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2556053811659194) internal successors, (280), 238 states have internal predecessors, (280), 105 states have call successors, (105), 45 states have call predecessors, (105), 45 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-22 02:00:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 489 transitions. [2022-11-22 02:00:36,112 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 489 transitions. Word has length 123 [2022-11-22 02:00:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:36,113 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 489 transitions. [2022-11-22 02:00:36,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:00:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 489 transitions. [2022-11-22 02:00:36,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 02:00:36,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:36,116 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:00:36,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2010105046, now seen corresponding path program 1 times [2022-11-22 02:00:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:36,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524068952] [2022-11-22 02:00:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 02:00:36,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:36,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524068952] [2022-11-22 02:00:36,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524068952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:36,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:36,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:36,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774057646] [2022-11-22 02:00:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:36,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:36,241 INFO L87 Difference]: Start difference. First operand 374 states and 489 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:00:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:36,416 INFO L93 Difference]: Finished difference Result 709 states and 925 transitions. [2022-11-22 02:00:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:36,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 123 [2022-11-22 02:00:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:36,420 INFO L225 Difference]: With dead ends: 709 [2022-11-22 02:00:36,420 INFO L226 Difference]: Without dead ends: 377 [2022-11-22 02:00:36,422 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 [2022-11-22 02:00:36,423 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 431 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:36,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:00:36,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-22 02:00:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 371. [2022-11-22 02:00:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.2062780269058295) internal successors, (269), 233 states have internal predecessors, (269), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-22 02:00:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 472 transitions. [2022-11-22 02:00:36,488 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 472 transitions. Word has length 123 [2022-11-22 02:00:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:36,489 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 472 transitions. [2022-11-22 02:00:36,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:00:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 472 transitions. [2022-11-22 02:00:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 02:00:36,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:36,493 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:36,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:00:36,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash 384449674, now seen corresponding path program 1 times [2022-11-22 02:00:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:36,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259355435] [2022-11-22 02:00:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:00:36,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259355435] [2022-11-22 02:00:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259355435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:36,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:36,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:36,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970933408] [2022-11-22 02:00:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:36,719 INFO L87 Difference]: Start difference. First operand 371 states and 472 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:00:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:36,891 INFO L93 Difference]: Finished difference Result 585 states and 738 transitions. [2022-11-22 02:00:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 140 [2022-11-22 02:00:36,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:36,899 INFO L225 Difference]: With dead ends: 585 [2022-11-22 02:00:36,902 INFO L226 Difference]: Without dead ends: 373 [2022-11-22 02:00:36,903 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 [2022-11-22 02:00:36,905 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:36,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:00:36,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-22 02:00:36,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-11-22 02:00:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.2044444444444444) internal successors, (271), 235 states have internal predecessors, (271), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-22 02:00:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 474 transitions. [2022-11-22 02:00:36,942 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 474 transitions. Word has length 140 [2022-11-22 02:00:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:36,942 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 474 transitions. [2022-11-22 02:00:36,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:00:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 474 transitions. [2022-11-22 02:00:36,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 02:00:36,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:36,946 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:36,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:00:36,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:36,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2021297993, now seen corresponding path program 1 times [2022-11-22 02:00:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:36,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650928319] [2022-11-22 02:00:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:00:37,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:37,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650928319] [2022-11-22 02:00:37,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650928319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:37,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:37,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699621235] [2022-11-22 02:00:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:37,078 INFO L87 Difference]: Start difference. First operand 373 states and 474 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:00:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:37,304 INFO L93 Difference]: Finished difference Result 744 states and 971 transitions. [2022-11-22 02:00:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:37,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 140 [2022-11-22 02:00:37,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:37,308 INFO L225 Difference]: With dead ends: 744 [2022-11-22 02:00:37,308 INFO L226 Difference]: Without dead ends: 440 [2022-11-22 02:00:37,310 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 [2022-11-22 02:00:37,310 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 76 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:37,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 857 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:00:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-22 02:00:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2022-11-22 02:00:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.249084249084249) internal successors, (341), 283 states have internal predecessors, (341), 116 states have call successors, (116), 45 states have call predecessors, (116), 45 states have return successors, (115), 114 states have call predecessors, (115), 115 states have call successors, (115) [2022-11-22 02:00:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 572 transitions. [2022-11-22 02:00:37,350 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 572 transitions. Word has length 140 [2022-11-22 02:00:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:37,351 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 572 transitions. [2022-11-22 02:00:37,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:00:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 572 transitions. [2022-11-22 02:00:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-22 02:00:37,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:37,354 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:37,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:00:37,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 274493063, now seen corresponding path program 1 times [2022-11-22 02:00:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:37,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438257216] [2022-11-22 02:00:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:00:37,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438257216] [2022-11-22 02:00:37,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438257216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078254639] [2022-11-22 02:00:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:37,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:37,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:37,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:37,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:38,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:00:38,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:00:38,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:00:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078254639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [705961876] [2022-11-22 02:00:38,305 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2022-11-22 02:00:38,305 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:00:38,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:00:38,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:00:38,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:02:32,547 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 489 for LOIs [2022-11-22 02:02:33,712 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 495 for LOIs [2022-11-22 02:02:35,349 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 471 for LOIs [2022-11-22 02:03:13,038 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-11-22 02:03:13,339 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-22 02:03:14,197 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-11-22 02:03:14,508 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 441 for LOIs [2022-11-22 02:03:14,866 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-22 02:03:15,156 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-22 02:03:23,916 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 431 for LOIs [2022-11-22 02:03:24,173 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 453 for LOIs [2022-11-22 02:03:24,925 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 451 for LOIs [2022-11-22 02:03:25,651 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 449 for LOIs [2022-11-22 02:03:30,697 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 273 for LOIs [2022-11-22 02:03:31,465 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 255 for LOIs [2022-11-22 02:03:32,019 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 255 for LOIs [2022-11-22 02:03:32,059 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 255 for LOIs [2022-11-22 02:03:32,103 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 259 for LOIs [2022-11-22 02:03:32,240 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:04:41,579 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 508 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:48,725 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 512 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:11,468 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 727 DAG size of output: 503 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:18,119 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 442 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:25,256 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 465 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:34,494 WARN L233 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 716 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:47,605 WARN L233 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 722 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:56,913 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 726 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:06:15,758 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 512 DAG size of output: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:06:25,035 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 557 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:06:33,265 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 556 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:06:41,581 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 558 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:06:50,902 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 558 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:00,291 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 556 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:10,319 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 557 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:27,200 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 533 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:40,540 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 529 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:47,274 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 540 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:08:18,097 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 506 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:08:26,193 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 557 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:09:01,816 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 449 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:09:08,498 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 487 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:09:22,559 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:09:46,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [705961876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:46,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:09:46,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [4, 4, 4] total 102 [2022-11-22 02:09:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215792408] [2022-11-22 02:09:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:46,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-22 02:09:46,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-22 02:09:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=9937, Unknown=0, NotChecked=0, Total=10302 [2022-11-22 02:09:46,966 INFO L87 Difference]: Start difference. First operand 435 states and 572 transitions. Second operand has 97 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 62 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 12 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-22 02:09:53,829 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 575 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:00,824 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 574 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:07,905 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 573 DAG size of output: 502 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:14,967 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 572 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:21,995 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 571 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:28,994 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 570 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:35,995 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 569 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:43,144 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 568 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:01,649 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 492 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:09,165 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:16,443 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 500 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:22,964 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 491 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:33,063 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 445 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:41,136 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 482 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:48,777 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 447 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:02,993 INFO L93 Difference]: Finished difference Result 1191 states and 1648 transitions. [2022-11-22 02:13:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-22 02:13:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 62 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 12 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24) Word has length 141 [2022-11-22 02:13:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:03,000 INFO L225 Difference]: With dead ends: 1191 [2022-11-22 02:13:03,000 INFO L226 Difference]: Without dead ends: 782 [2022-11-22 02:13:03,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 320 SyntacticMatches, 5 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5131 ImplicationChecksByTransitivity, 475.3s TimeCoverageRelationStatistics Valid=522, Invalid=13284, Unknown=0, NotChecked=0, Total=13806 [2022-11-22 02:13:03,007 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 706 mSDsluCounter, 11038 mSDsCounter, 0 mSdLazyCounter, 20118 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 11485 SdHoareTripleChecker+Invalid, 20221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 20118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:03,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 11485 Invalid, 20221 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [103 Valid, 20118 Invalid, 0 Unknown, 0 Unchecked, 93.9s Time] [2022-11-22 02:13:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-22 02:13:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 603. [2022-11-22 02:13:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 402 states have (on average 1.2835820895522387) internal successors, (516), 413 states have internal predecessors, (516), 139 states have call successors, (139), 67 states have call predecessors, (139), 61 states have return successors, (138), 130 states have call predecessors, (138), 138 states have call successors, (138) [2022-11-22 02:13:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 793 transitions. [2022-11-22 02:13:03,377 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 793 transitions. Word has length 141 [2022-11-22 02:13:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:03,378 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 793 transitions. [2022-11-22 02:13:03,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 62 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 12 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-22 02:13:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 793 transitions. [2022-11-22 02:13:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-22 02:13:03,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:03,382 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:03,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:03,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:03,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1955062501, now seen corresponding path program 1 times [2022-11-22 02:13:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:03,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18727425] [2022-11-22 02:13:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:03,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-22 02:13:03,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18727425] [2022-11-22 02:13:03,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18727425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:03,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:03,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:13:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294603146] [2022-11-22 02:13:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:03,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:03,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:03,709 INFO L87 Difference]: Start difference. First operand 603 states and 793 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:13:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:04,462 INFO L93 Difference]: Finished difference Result 1515 states and 2031 transitions. [2022-11-22 02:13:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:04,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 148 [2022-11-22 02:13:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:04,468 INFO L225 Difference]: With dead ends: 1515 [2022-11-22 02:13:04,469 INFO L226 Difference]: Without dead ends: 952 [2022-11-22 02:13:04,473 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 [2022-11-22 02:13:04,475 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 445 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:04,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1155 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:13:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-22 02:13:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 950. [2022-11-22 02:13:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 620 states have (on average 1.2790322580645161) internal successors, (793), 638 states have internal predecessors, (793), 230 states have call successors, (230), 105 states have call predecessors, (230), 99 states have return successors, (240), 219 states have call predecessors, (240), 228 states have call successors, (240) [2022-11-22 02:13:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1263 transitions. [2022-11-22 02:13:05,022 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1263 transitions. Word has length 148 [2022-11-22 02:13:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:05,023 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1263 transitions. [2022-11-22 02:13:05,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:13:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1263 transitions. [2022-11-22 02:13:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-22 02:13:05,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:05,028 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:05,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:13:05,028 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash -804817033, now seen corresponding path program 1 times [2022-11-22 02:13:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:05,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139019590] [2022-11-22 02:13:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:13:05,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:05,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139019590] [2022-11-22 02:13:05,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139019590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117631419] [2022-11-22 02:13:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:05,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:05,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:05,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:05,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcae692c-9ce3-42b9-a03a-a14e742bbbd4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:13:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:05,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:13:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:13:05,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 02:13:05,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117631419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:05,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [416058602] [2022-11-22 02:13:05,758 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-22 02:13:05,759 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:13:05,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:13:05,760 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:13:05,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs