./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P --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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:51:06,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:51:06,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:51:06,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:51:06,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:51:06,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:51:06,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:51:06,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:51:06,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:51:06,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:51:06,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:51:06,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:51:06,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:51:06,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:51:06,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:51:06,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:51:06,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:51:06,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:51:06,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:51:06,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:51:06,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:51:06,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:51:06,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:51:06,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:51:06,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:51:06,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:51:06,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:51:06,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:51:06,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:51:06,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:51:06,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:51:06,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:51:06,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:51:06,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:51:06,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:51:06,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:51:06,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:51:06,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:51:06,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:51:06,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:51:06,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:51:06,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 22:51:06,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:51:06,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:51:06,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:51:06,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:51:06,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:51:06,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:51:06,214 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:51:06,215 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:51:06,215 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:51:06,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:51:06,216 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:51:06,217 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:51:06,217 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:51:06,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:51:06,217 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:51:06,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:51:06,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:51:06,218 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:51:06,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:51:06,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:51:06,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:51:06,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:51:06,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:51:06,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:51:06,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:51:06,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:51:06,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:51:06,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:51:06,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:51:06,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:51:06,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:51:06,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:51:06,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:51:06,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:51:06,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:51:06,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:51:06,226 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:51:06,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:51:06,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:51:06,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:51:06,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:51:06,228 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-11-20 22:51:06,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:51:06,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:51:06,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:51:06,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:51:06,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:51:06,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-20 22:51:06,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/data/c636b1a84/25a0140255b24a01984935cd9ea2e3f6/FLAG820268036 [2021-11-20 22:51:07,368 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:51:07,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-20 22:51:07,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/data/c636b1a84/25a0140255b24a01984935cd9ea2e3f6/FLAG820268036 [2021-11-20 22:51:07,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/data/c636b1a84/25a0140255b24a01984935cd9ea2e3f6 [2021-11-20 22:51:07,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:51:07,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:51:07,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:51:07,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:51:07,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:51:07,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:07" (1/1) ... [2021-11-20 22:51:07,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ed678c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:07, skipping insertion in model container [2021-11-20 22:51:07,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:07" (1/1) ... [2021-11-20 22:51:07,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:51:07,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:51:08,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-20 22:51:08,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:51:08,421 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:51:08,512 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-20 22:51:08,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:51:08,605 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:51:08,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08 WrapperNode [2021-11-20 22:51:08,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:51:08,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:51:08,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:51:08,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:51:08,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,768 INFO L137 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2021-11-20 22:51:08,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:51:08,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:51:08,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:51:08,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:51:08,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:51:08,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:51:08,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:51:08,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:51:08,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (1/1) ... [2021-11-20 22:51:08,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:51:08,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:08,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:51:08,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:51:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-20 22:51:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-20 22:51:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-20 22:51:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-20 22:51:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-20 22:51:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-20 22:51:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 22:51:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 22:51:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-20 22:51:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-20 22:51:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 22:51:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 22:51:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-20 22:51:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-20 22:51:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-20 22:51:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-20 22:51:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 22:51:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 22:51:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-20 22:51:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-20 22:51:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 22:51:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 22:51:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 22:51:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 22:51:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 22:51:09,021 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 22:51:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-20 22:51:09,021 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-20 22:51:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-20 22:51:09,022 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-20 22:51:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-20 22:51:09,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-20 22:51:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 22:51:09,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 22:51:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 22:51:09,023 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 22:51:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 22:51:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-20 22:51:09,024 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-20 22:51:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 22:51:09,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 22:51:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 22:51:09,024 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 22:51:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 22:51:09,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 22:51:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-20 22:51:09,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-20 22:51:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:51:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 22:51:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 22:51:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 22:51:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 22:51:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-20 22:51:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-20 22:51:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-20 22:51:09,029 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-20 22:51:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-20 22:51:09,029 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-20 22:51:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 22:51:09,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 22:51:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 22:51:09,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 22:51:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 22:51:09,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 22:51:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 22:51:09,031 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 22:51:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 22:51:09,031 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 22:51:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 22:51:09,031 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 22:51:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-20 22:51:09,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-20 22:51:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-20 22:51:09,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-20 22:51:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-20 22:51:09,033 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-20 22:51:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 22:51:09,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 22:51:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 22:51:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 22:51:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:51:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 22:51:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 22:51:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-20 22:51:09,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-20 22:51:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-20 22:51:09,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-20 22:51:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 22:51:09,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 22:51:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:51:09,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:51:09,314 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:51:09,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:51:10,242 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:51:10,858 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:51:10,858 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 22:51:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:10 BoogieIcfgContainer [2021-11-20 22:51:10,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:51:10,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:51:10,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:51:10,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:51:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:51:07" (1/3) ... [2021-11-20 22:51:10,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efcee37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:10, skipping insertion in model container [2021-11-20 22:51:10,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:08" (2/3) ... [2021-11-20 22:51:10,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efcee37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:10, skipping insertion in model container [2021-11-20 22:51:10,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:10" (3/3) ... [2021-11-20 22:51:10,872 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2021-11-20 22:51:10,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:51:10,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:51:10,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:51:10,959 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 22:51:10,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 22:51:10,990 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) [2021-11-20 22:51:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 22:51:11,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:11,016 INFO L514 BasicCegarLoop]: 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] [2021-11-20 22:51:11,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:11,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:11,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1108954499, now seen corresponding path program 1 times [2021-11-20 22:51:11,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:11,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658809676] [2021-11-20 22:51:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:11,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 22:51:11,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:11,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658809676] [2021-11-20 22:51:11,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658809676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:11,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:11,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142791001] [2021-11-20 22:51:11,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:11,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:11,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:11,597 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 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 22:51:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:11,947 INFO L93 Difference]: Finished difference Result 726 states and 998 transitions. [2021-11-20 22:51:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:51:11,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2021-11-20 22:51:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:11,964 INFO L225 Difference]: With dead ends: 726 [2021-11-20 22:51:11,965 INFO L226 Difference]: Without dead ends: 374 [2021-11-20 22:51:11,972 INFO L932 BasicCegarLoop]: 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 [2021-11-20 22:51:11,976 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:11,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 22:51:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-20 22:51:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-20 22:51:12,080 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) [2021-11-20 22:51:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2021-11-20 22:51:12,087 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 121 [2021-11-20 22:51:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:12,088 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2021-11-20 22:51:12,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 22:51:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2021-11-20 22:51:12,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 22:51:12,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:12,099 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1] [2021-11-20 22:51:12,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:51:12,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash 448457004, now seen corresponding path program 1 times [2021-11-20 22:51:12,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:12,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600241442] [2021-11-20 22:51:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:12,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 22:51:12,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600241442] [2021-11-20 22:51:12,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600241442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:12,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:12,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:12,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990303977] [2021-11-20 22:51:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:12,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:12,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:12,295 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 22:51:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:12,469 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2021-11-20 22:51:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:12,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2021-11-20 22:51:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:12,479 INFO L225 Difference]: With dead ends: 592 [2021-11-20 22:51:12,479 INFO L226 Difference]: Without dead ends: 376 [2021-11-20 22:51:12,487 INFO L932 BasicCegarLoop]: 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 [2021-11-20 22:51:12,489 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 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 [2021-11-20 22:51:12,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:51:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-20 22:51:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-20 22:51:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 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) [2021-11-20 22:51:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2021-11-20 22:51:12,553 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 127 [2021-11-20 22:51:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:12,556 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2021-11-20 22:51:12,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 22:51:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2021-11-20 22:51:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 22:51:12,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:12,571 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-20 22:51:12,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 22:51:12,572 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash -120524735, now seen corresponding path program 1 times [2021-11-20 22:51:12,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:12,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732376444] [2021-11-20 22:51:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:12,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 22:51:12,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:12,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732376444] [2021-11-20 22:51:12,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732376444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:12,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:12,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:12,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332828144] [2021-11-20 22:51:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:12,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:12,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:12,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:12,715 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 22:51:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:12,910 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2021-11-20 22:51:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:12,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2021-11-20 22:51:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:12,917 INFO L225 Difference]: With dead ends: 751 [2021-11-20 22:51:12,917 INFO L226 Difference]: Without dead ends: 443 [2021-11-20 22:51:12,919 INFO L932 BasicCegarLoop]: 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 [2021-11-20 22:51:12,927 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 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 [2021-11-20 22:51:12,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:51:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-20 22:51:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-11-20 22:51:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2021-11-20 22:51:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2021-11-20 22:51:12,979 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 132 [2021-11-20 22:51:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:12,981 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2021-11-20 22:51:12,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 22:51:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2021-11-20 22:51:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 22:51:12,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:12,991 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-20 22:51:12,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 22:51:12,992 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1825392753, now seen corresponding path program 1 times [2021-11-20 22:51:12,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:12,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293284660] [2021-11-20 22:51:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:12,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 22:51:13,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293284660] [2021-11-20 22:51:13,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293284660] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352916990] [2021-11-20 22:51:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:13,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:13,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:51:13,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41dac4bc-18d5-404a-9dd5-014459e59e9f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:51:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:13,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:51:13,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 22:51:14,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 22:51:14,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352916990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:51:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [169895767] [2021-11-20 22:51:14,367 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2021-11-20 22:51:14,367 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:51:14,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:51:14,379 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:51:14,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:57:44,803 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2021-11-20 22:58:06,846 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2021-11-20 22:58:28,838 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2021-11-20 22:58:33,740 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2021-11-20 22:58:55,375 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 450 for LOIs [2021-11-20 22:59:00,165 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:00:42,894 WARN L227 SmtUtils]: Spent 24.66s on a formula simplification. DAG size of input: 837 DAG size of output: 582 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:00:50,841 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 554 DAG size of output: 406 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:01:15,160 WARN L227 SmtUtils]: Spent 22.79s on a formula simplification. DAG size of input: 817 DAG size of output: 620 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:01:22,955 WARN L227 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:01:25,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [169895767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:01:25,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:01:25,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2021-11-20 23:01:25,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308993741] [2021-11-20 23:01:25,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:01:25,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-20 23:01:25,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:01:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-20 23:01:25,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2524, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 23:01:25,617 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 48 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 15 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (21), 15 states have call predecessors, (21), 15 states have call successors, (21) [2021-11-20 23:02:15,925 WARN L227 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 584 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:02:24,440 WARN L227 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 743 DAG size of output: 587 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:02:33,658 WARN L227 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 675 DAG size of output: 578 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:02:41,069 WARN L227 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 581 DAG size of output: 548 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:02:51,808 WARN L227 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 769 DAG size of output: 590 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)