./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fde44ff6f2aac911c03318478d3361889c0f9ce519411733d9129672caa5fa0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:42:03,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:42:03,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:42:03,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:42:03,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:42:03,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:42:03,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:42:03,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:42:03,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:42:03,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:42:03,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:42:03,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:42:03,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:42:03,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:42:03,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:42:03,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:42:03,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:42:03,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:42:03,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:42:03,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:42:03,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:42:03,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:42:03,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:42:03,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:42:03,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:42:03,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:42:03,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:42:03,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:42:03,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:42:03,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:42:03,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:42:03,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:42:03,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:42:03,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:42:03,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:42:03,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:42:03,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:42:03,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:42:03,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:42:03,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:42:03,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:42:03,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:42:03,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:42:03,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:42:03,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:42:03,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:42:03,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:42:03,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:42:03,690 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:42:03,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:42:03,690 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:42:03,691 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:42:03,692 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:42:03,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:42:03,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:42:03,693 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:42:03,693 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:42:03,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:42:03,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:42:03,694 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:42:03,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:42:03,695 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:42:03,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:42:03,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:42:03,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:42:03,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:42:03,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:42:03,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:42:03,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:42:03,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:42:03,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:42:03,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:42:03,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:42:03,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:42:03,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:42:03,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:42:03,699 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:42:03,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:42:03,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:42:03,700 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:42:03,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:42:03,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:42:03,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:42:03,701 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_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fde44ff6f2aac911c03318478d3361889c0f9ce519411733d9129672caa5fa0 [2022-11-23 14:42:03,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:42:04,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:42:04,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:42:04,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:42:04,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:42:04,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec7_product13.cil.c [2022-11-23 14:42:07,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:42:08,079 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:42:08,080 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/sv-benchmarks/c/product-lines/email_spec7_product13.cil.c [2022-11-23 14:42:08,105 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/data/6bcf24fa5/b01ae3f2c0f045f0a4b1b3a0110bacfa/FLAGb76ba4fd6 [2022-11-23 14:42:08,134 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/data/6bcf24fa5/b01ae3f2c0f045f0a4b1b3a0110bacfa [2022-11-23 14:42:08,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:42:08,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:42:08,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:42:08,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:42:08,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:42:08,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:08" (1/1) ... [2022-11-23 14:42:08,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1254ecfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:08, skipping insertion in model container [2022-11-23 14:42:08,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:08" (1/1) ... [2022-11-23 14:42:08,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:42:08,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:42:08,587 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_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/sv-benchmarks/c/product-lines/email_spec7_product13.cil.c[16810,16823] [2022-11-23 14:42:08,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:42:08,944 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:42:09,020 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_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/sv-benchmarks/c/product-lines/email_spec7_product13.cil.c[16810,16823] [2022-11-23 14:42:09,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:42:09,207 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:42:09,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09 WrapperNode [2022-11-23 14:42:09,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:42:09,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:42:09,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:42:09,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:42:09,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,328 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 843 [2022-11-23 14:42:09,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:42:09,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:42:09,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:42:09,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:42:09,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:42:09,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:42:09,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:42:09,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:42:09,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (1/1) ... [2022-11-23 14:42:09,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:42:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:09,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:42:09,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:42:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 14:42:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 14:42:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 14:42:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 14:42:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 14:42:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 14:42:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 14:42:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 14:42:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 14:42:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 14:42:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 14:42:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 14:42:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 14:42:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 14:42:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 14:42:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 14:42:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 14:42:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:42:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 14:42:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 14:42:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 14:42:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 14:42:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 14:42:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 14:42:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 14:42:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 14:42:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 14:42:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 14:42:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 14:42:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 14:42:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:42:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 14:42:09,539 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 14:42:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:42:09,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:42:09,755 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:42:09,758 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:42:10,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:42:11,293 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:42:11,294 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:42:11,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:11 BoogieIcfgContainer [2022-11-23 14:42:11,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:42:11,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:42:11,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:42:11,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:42:11,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:42:08" (1/3) ... [2022-11-23 14:42:11,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe61da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:11, skipping insertion in model container [2022-11-23 14:42:11,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:09" (2/3) ... [2022-11-23 14:42:11,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe61da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:11, skipping insertion in model container [2022-11-23 14:42:11,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:11" (3/3) ... [2022-11-23 14:42:11,315 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product13.cil.c [2022-11-23 14:42:11,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:42:11,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:42:11,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:42:11,419 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;@5e09af64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:42:11,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:42:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 81 states have (on average 1.382716049382716) internal successors, (112), 83 states have internal predecessors, (112), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-23 14:42:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 14:42:11,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:11,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:11,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -535784109, now seen corresponding path program 1 times [2022-11-23 14:42:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:11,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429588098] [2022-11-23 14:42:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:42:12,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:12,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429588098] [2022-11-23 14:42:12,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429588098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:12,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:12,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:42:12,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135300190] [2022-11-23 14:42:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:42:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:42:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:42:12,098 INFO L87 Difference]: Start difference. First operand has 133 states, 81 states have (on average 1.382716049382716) internal successors, (112), 83 states have internal predecessors, (112), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:42:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:12,257 INFO L93 Difference]: Finished difference Result 183 states and 242 transitions. [2022-11-23 14:42:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:42:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 50 [2022-11-23 14:42:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:12,271 INFO L225 Difference]: With dead ends: 183 [2022-11-23 14:42:12,272 INFO L226 Difference]: Without dead ends: 130 [2022-11-23 14:42:12,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:42:12,280 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:12,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-23 14:42:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-23 14:42:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 80 states have internal predecessors, (106), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-23 14:42:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 175 transitions. [2022-11-23 14:42:12,340 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 175 transitions. Word has length 50 [2022-11-23 14:42:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:12,342 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 175 transitions. [2022-11-23 14:42:12,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:42:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 175 transitions. [2022-11-23 14:42:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-23 14:42:12,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:12,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:42:12,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash 962366330, now seen corresponding path program 1 times [2022-11-23 14:42:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:12,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927406839] [2022-11-23 14:42:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:12,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:42:12,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927406839] [2022-11-23 14:42:12,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927406839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:12,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:12,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198152773] [2022-11-23 14:42:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:12,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:12,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:12,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:12,577 INFO L87 Difference]: Start difference. First operand 130 states and 175 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:42:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:12,680 INFO L93 Difference]: Finished difference Result 179 states and 230 transitions. [2022-11-23 14:42:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:12,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2022-11-23 14:42:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:12,683 INFO L225 Difference]: With dead ends: 179 [2022-11-23 14:42:12,683 INFO L226 Difference]: Without dead ends: 132 [2022-11-23 14:42:12,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:12,686 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:12,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-23 14:42:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-23 14:42:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 82 states have internal predecessors, (108), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-23 14:42:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 177 transitions. [2022-11-23 14:42:12,702 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 177 transitions. Word has length 51 [2022-11-23 14:42:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:12,703 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 177 transitions. [2022-11-23 14:42:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:42:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 177 transitions. [2022-11-23 14:42:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 14:42:12,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:12,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:42:12,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1354458489, now seen corresponding path program 1 times [2022-11-23 14:42:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232044897] [2022-11-23 14:42:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:42:12,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:12,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232044897] [2022-11-23 14:42:12,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232044897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:12,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:12,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844839272] [2022-11-23 14:42:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:12,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:12,831 INFO L87 Difference]: Start difference. First operand 132 states and 177 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:42:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:12,939 INFO L93 Difference]: Finished difference Result 294 states and 413 transitions. [2022-11-23 14:42:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:12,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2022-11-23 14:42:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:12,943 INFO L225 Difference]: With dead ends: 294 [2022-11-23 14:42:12,943 INFO L226 Difference]: Without dead ends: 180 [2022-11-23 14:42:12,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:12,947 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 57 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:12,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 316 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-23 14:42:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 175. [2022-11-23 14:42:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 113 states have (on average 1.424778761061947) internal successors, (161), 114 states have internal predecessors, (161), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-23 14:42:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 252 transitions. [2022-11-23 14:42:12,970 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 252 transitions. Word has length 56 [2022-11-23 14:42:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:12,971 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 252 transitions. [2022-11-23 14:42:12,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:42:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 252 transitions. [2022-11-23 14:42:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 14:42:12,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:12,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:42:12,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1310477890, now seen corresponding path program 1 times [2022-11-23 14:42:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:12,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813321449] [2022-11-23 14:42:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:42:13,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:13,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813321449] [2022-11-23 14:42:13,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813321449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:42:13,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399724091] [2022-11-23 14:42:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:13,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:13,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:42:13,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:42:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:42:13,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:42:13,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:42:13,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399724091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:42:13,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276604452] [2022-11-23 14:42:13,796 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-23 14:42:13,797 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:42:13,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:42:13,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:42:13,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:42:44,655 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 14:42:45,100 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 14:42:45,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:43:13,612 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 470 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:43:25,261 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 492 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:43:36,763 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 514 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:43:57,468 WARN L233 SmtUtils]: Spent 20.39s on a formula simplification. DAG size of input: 582 DAG size of output: 453 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:44:07,952 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:44:17,690 WARN L233 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 570 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:44:27,397 WARN L233 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 568 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:44:28,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1276604452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:28,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:44:28,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 14:44:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658487660] [2022-11-23 14:44:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:28,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:44:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:44:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:44:28,753 INFO L87 Difference]: Start difference. First operand 175 states and 252 transitions. Second operand has 21 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-23 14:44:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:37,332 INFO L93 Difference]: Finished difference Result 429 states and 665 transitions. [2022-11-23 14:44:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 14:44:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 57 [2022-11-23 14:44:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:37,337 INFO L225 Difference]: With dead ends: 429 [2022-11-23 14:44:37,337 INFO L226 Difference]: Without dead ends: 272 [2022-11-23 14:44:37,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 103.3s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:44:37,339 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 141 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:37,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2405 Invalid, 1847 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 14:44:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-23 14:44:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 198. [2022-11-23 14:44:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 135 states have (on average 1.4370370370370371) internal successors, (194), 136 states have internal predecessors, (194), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-23 14:44:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 285 transitions. [2022-11-23 14:44:37,506 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 285 transitions. Word has length 57 [2022-11-23 14:44:37,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:37,507 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 285 transitions. [2022-11-23 14:44:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-23 14:44:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 285 transitions. [2022-11-23 14:44:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 14:44:37,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:37,510 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:37,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:44:37,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:44:37,717 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2111739251, now seen corresponding path program 1 times [2022-11-23 14:44:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926683280] [2022-11-23 14:44:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:37,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:44:37,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926683280] [2022-11-23 14:44:37,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926683280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:37,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:37,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:44:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653595273] [2022-11-23 14:44:37,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:37,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:44:37,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:37,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:44:37,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:44:37,868 INFO L87 Difference]: Start difference. First operand 198 states and 285 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:44:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:38,149 INFO L93 Difference]: Finished difference Result 489 states and 734 transitions. [2022-11-23 14:44:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:44:38,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-23 14:44:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:38,152 INFO L225 Difference]: With dead ends: 489 [2022-11-23 14:44:38,152 INFO L226 Difference]: Without dead ends: 315 [2022-11-23 14:44:38,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:44:38,154 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 55 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:38,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 322 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:44:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-23 14:44:38,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 310. [2022-11-23 14:44:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 223 states have internal predecessors, (330), 71 states have call successors, (71), 16 states have call predecessors, (71), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-23 14:44:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 471 transitions. [2022-11-23 14:44:38,336 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 471 transitions. Word has length 62 [2022-11-23 14:44:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 471 transitions. [2022-11-23 14:44:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:44:38,337 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 471 transitions. [2022-11-23 14:44:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 14:44:38,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:38,344 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:44:38,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash -571656565, now seen corresponding path program 1 times [2022-11-23 14:44:38,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:38,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8792379] [2022-11-23 14:44:38,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:44:38,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:38,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8792379] [2022-11-23 14:44:38,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8792379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:44:38,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535251710] [2022-11-23 14:44:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:38,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:44:38,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:38,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:44:38,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:44:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:38,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:44:38,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:44:38,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:44:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:44:38,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535251710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:44:38,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1154149965] [2022-11-23 14:44:38,920 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-23 14:44:38,920 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:44:38,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:44:38,921 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:44:38,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:45:13,203 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:45:13,487 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-23 14:45:13,780 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-23 14:45:14,561 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 244 for LOIs [2022-11-23 14:45:25,520 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 246 for LOIs [2022-11-23 14:45:25,561 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-11-23 14:45:25,626 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 451 for LOIs [2022-11-23 14:45:26,315 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:45:43,632 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:09,645 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 492 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:20,723 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 514 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:40,994 WARN L233 SmtUtils]: Spent 19.96s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:47:21,842 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 561 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:47:33,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1154149965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:47:33,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:47:33,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-23 14:47:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165553605] [2022-11-23 14:47:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:47:33,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-23 14:47:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:47:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-23 14:47:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2195, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 14:47:33,617 INFO L87 Difference]: Start difference. First operand 310 states and 471 transitions. Second operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 14:47:52,906 WARN L233 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 550 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:25,829 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 584 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:48:39,406 INFO L93 Difference]: Finished difference Result 750 states and 1189 transitions. [2022-11-23 14:48:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-23 14:48:39,407 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 63 [2022-11-23 14:48:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:48:39,411 INFO L225 Difference]: With dead ends: 750 [2022-11-23 14:48:39,411 INFO L226 Difference]: Without dead ends: 503 [2022-11-23 14:48:39,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 175.2s TimeCoverageRelationStatistics Valid=240, Invalid=3066, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 14:48:39,414 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 257 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 4231 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:48:39,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 3226 Invalid, 4262 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [31 Valid, 4231 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2022-11-23 14:48:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-23 14:48:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 404. [2022-11-23 14:48:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 299 states have (on average 1.5117056856187292) internal successors, (452), 303 states have internal predecessors, (452), 83 states have call successors, (83), 22 states have call predecessors, (83), 21 states have return successors, (83), 78 states have call predecessors, (83), 82 states have call successors, (83) [2022-11-23 14:48:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 618 transitions. [2022-11-23 14:48:39,761 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 618 transitions. Word has length 63 [2022-11-23 14:48:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:48:39,762 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 618 transitions. [2022-11-23 14:48:39,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 14:48:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 618 transitions. [2022-11-23 14:48:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 14:48:39,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:48:39,765 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:48:39,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:48:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 14:48:39,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:48:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:48:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 209401985, now seen corresponding path program 1 times [2022-11-23 14:48:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:48:39,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566751736] [2022-11-23 14:48:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:48:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:48:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:48:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:48:40,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:48:40,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566751736] [2022-11-23 14:48:40,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566751736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:48:40,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812135018] [2022-11-23 14:48:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:48:40,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:48:40,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:48:40,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:48:40,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:48:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:48:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:48:40,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:48:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:48:40,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:48:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:48:40,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812135018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:48:40,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662132480] [2022-11-23 14:48:40,547 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-11-23 14:48:40,547 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:48:40,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:48:40,548 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:48:40,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:50:19,711 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 14:50:19,996 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-11-23 14:50:20,267 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-23 14:50:20,324 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 14:50:20,598 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-11-23 14:50:20,863 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 232 for LOIs [2022-11-23 14:50:21,406 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 227 for LOIs [2022-11-23 14:50:36,104 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 396 for LOIs [2022-11-23 14:50:36,295 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 228 for LOIs [2022-11-23 14:50:36,328 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 402 for LOIs [2022-11-23 14:50:36,865 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:51:06,862 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 470 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:51:18,103 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 492 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:51:29,176 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 514 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:51:37,927 WARN L233 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 527 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:51:52,663 WARN L233 SmtUtils]: Spent 9.99s on a formula simplification. DAG size of input: 529 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:10,829 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 524 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:28,923 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 527 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:42,810 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 417 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:03,057 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 513 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:11,200 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 535 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:28,002 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 561 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:33,763 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 561 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:33,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [662132480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:33,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:53:33,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-23 14:53:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112246348] [2022-11-23 14:53:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:33,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-23 14:53:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-23 14:53:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 14:53:33,768 INFO L87 Difference]: Start difference. First operand 404 states and 618 transitions. Second operand has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 14:53:44,803 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 517 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:57,284 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 500 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:54:11,607 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 486 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:54:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:30,635 INFO L93 Difference]: Finished difference Result 825 states and 1294 transitions. [2022-11-23 14:54:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-23 14:54:30,636 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 66 [2022-11-23 14:54:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:30,640 INFO L225 Difference]: With dead ends: 825 [2022-11-23 14:54:30,640 INFO L226 Difference]: Without dead ends: 578 [2022-11-23 14:54:30,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 211.9s TimeCoverageRelationStatistics Valid=236, Invalid=3670, Unknown=0, NotChecked=0, Total=3906 [2022-11-23 14:54:30,643 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 312 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 5516 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:30,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 3829 Invalid, 5566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 5516 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2022-11-23 14:54:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-23 14:54:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 472. [2022-11-23 14:54:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 359 states have (on average 1.5208913649025069) internal successors, (546), 365 states have internal predecessors, (546), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (88), 81 states have call predecessors, (88), 87 states have call successors, (88) [2022-11-23 14:54:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 722 transitions. [2022-11-23 14:54:31,051 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 722 transitions. Word has length 66 [2022-11-23 14:54:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:54:31,055 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 722 transitions. [2022-11-23 14:54:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 14:54:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 722 transitions. [2022-11-23 14:54:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 14:54:31,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:54:31,058 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:54:31,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:54:31,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f672ddc1-9c5e-4ea9-af1a-3b701e2b15d6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 14:54:31,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:54:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:54:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash -304429653, now seen corresponding path program 1 times [2022-11-23 14:54:31,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:54:31,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568885166] [2022-11-23 14:54:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:54:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:54:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:54:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 14:54:31,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:54:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568885166] [2022-11-23 14:54:31,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568885166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:54:31,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:54:31,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:54:31,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025773368] [2022-11-23 14:54:31,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:54:31,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:54:31,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:54:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:54:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:54:31,488 INFO L87 Difference]: Start difference. First operand 472 states and 722 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 14:54:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:31,983 INFO L93 Difference]: Finished difference Result 472 states and 722 transitions. [2022-11-23 14:54:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:54:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 68 [2022-11-23 14:54:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:31,985 INFO L225 Difference]: With dead ends: 472 [2022-11-23 14:54:31,985 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:54:31,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:54:31,987 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 81 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:31,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 639 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:54:31,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:54:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:54:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:54:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:54:31,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2022-11-23 14:54:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:54:31,992 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:54:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 14:54:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:54:31,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:54:31,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:54:31,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:54:31,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:55:12,424 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 536 DAG size of output: 509 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-23 14:55:19,001 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 536 DAG size of output: 509 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-23 14:55:35,102 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 589 DAG size of output: 583 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)