./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI --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 ac360da941eb2bc713d1cdb41b6939d6a50ea394a41fda87a7330709a6b33058 --- 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-5e519f3 [2022-11-03 03:36:10,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:36:10,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:36:10,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:36:10,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:36:10,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:36:10,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:36:10,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:36:10,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:36:10,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:36:10,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:36:10,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:36:10,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:36:10,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:36:10,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:36:10,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:36:10,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:36:10,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:36:10,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:36:10,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:36:10,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:36:10,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:36:10,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:36:10,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:36:10,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:36:10,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:36:10,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:36:10,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:36:10,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:36:10,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:36:10,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:36:10,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:36:10,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:36:10,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:36:10,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:36:10,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:36:10,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:36:10,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:36:10,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:36:10,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:36:10,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:36:10,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:36:10,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:36:10,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:36:10,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:36:10,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:36:10,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:36:10,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:36:10,321 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:36:10,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:36:10,321 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:36:10,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:36:10,322 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:36:10,322 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:36:10,322 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:36:10,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:36:10,323 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:36:10,323 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:36:10,323 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:36:10,324 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:36:10,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:36:10,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:36:10,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:36:10,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:36:10,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:36:10,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:36:10,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:36:10,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:36:10,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:36:10,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:36:10,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:36:10,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:36:10,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:36:10,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:36:10,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:36:10,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:36:10,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:36:10,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:36:10,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:36:10,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:36:10,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:36:10,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:36:10,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:36:10,330 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_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac360da941eb2bc713d1cdb41b6939d6a50ea394a41fda87a7330709a6b33058 [2022-11-03 03:36:10,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:36:10,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:36:10,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:36:10,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:36:10,731 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:36:10,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec0_product10.cil.c [2022-11-03 03:36:10,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/data/2509e4a00/51d6e1c899ea4c0e829f428f7ff46c0b/FLAG01c30b7f3 [2022-11-03 03:36:11,621 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:36:11,630 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/sv-benchmarks/c/product-lines/email_spec0_product10.cil.c [2022-11-03 03:36:11,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/data/2509e4a00/51d6e1c899ea4c0e829f428f7ff46c0b/FLAG01c30b7f3 [2022-11-03 03:36:11,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/data/2509e4a00/51d6e1c899ea4c0e829f428f7ff46c0b [2022-11-03 03:36:11,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:36:11,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:36:11,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:36:11,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:36:11,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:36:11,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:36:11" (1/1) ... [2022-11-03 03:36:11,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac32f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:11, skipping insertion in model container [2022-11-03 03:36:11,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:36:11" (1/1) ... [2022-11-03 03:36:11,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:36:11,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:36:12,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/sv-benchmarks/c/product-lines/email_spec0_product10.cil.c[2842,2855] [2022-11-03 03:36:12,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:36:12,642 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:36:12,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/sv-benchmarks/c/product-lines/email_spec0_product10.cil.c[2842,2855] [2022-11-03 03:36:12,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:36:12,839 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:36:12,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12 WrapperNode [2022-11-03 03:36:12,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:36:12,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:36:12,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:36:12,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:36:12,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,927 INFO L138 Inliner]: procedures = 110, calls = 135, calls flagged for inlining = 40, calls inlined = 33, statements flattened = 617 [2022-11-03 03:36:12,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:36:12,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:36:12,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:36:12,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:36:12,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:36:12,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:36:12,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:36:12,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:36:12,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (1/1) ... [2022-11-03 03:36:12,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:36:13,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:13,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:36:13,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:36:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:36:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:36:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:36:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:36:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:36:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:36:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:36:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:36:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:36:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 03:36:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 03:36:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:36:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:36:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:36:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:36:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:36:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:36:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:36:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:36:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:36:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:36:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:36:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:36:13,294 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:36:13,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:36:14,166 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:36:14,416 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:36:14,417 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:36:14,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:36:14 BoogieIcfgContainer [2022-11-03 03:36:14,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:36:14,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:36:14,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:36:14,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:36:14,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:36:11" (1/3) ... [2022-11-03 03:36:14,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1544b59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:36:14, skipping insertion in model container [2022-11-03 03:36:14,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:36:12" (2/3) ... [2022-11-03 03:36:14,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1544b59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:36:14, skipping insertion in model container [2022-11-03 03:36:14,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:36:14" (3/3) ... [2022-11-03 03:36:14,441 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product10.cil.c [2022-11-03 03:36:14,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:36:14,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:36:14,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:36:14,580 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;@39cc5118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:36:14,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:36:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 64 states have internal predecessors, (92), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-03 03:36:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 03:36:14,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:14,616 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:36:14,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1919995639, now seen corresponding path program 1 times [2022-11-03 03:36:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:14,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950701286] [2022-11-03 03:36:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:36:15,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:15,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950701286] [2022-11-03 03:36:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950701286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:15,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:36:15,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583856456] [2022-11-03 03:36:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:36:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:36:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:36:15,233 INFO L87 Difference]: Start difference. First operand has 92 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 64 states have internal predecessors, (92), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:36:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:15,390 INFO L93 Difference]: Finished difference Result 150 states and 202 transitions. [2022-11-03 03:36:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:36:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 48 [2022-11-03 03:36:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:15,407 INFO L225 Difference]: With dead ends: 150 [2022-11-03 03:36:15,408 INFO L226 Difference]: Without dead ends: 89 [2022-11-03 03:36:15,414 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 [2022-11-03 03:36:15,419 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:15,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:36:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-03 03:36:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-03 03:36:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 61 states have internal predecessors, (86), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:36:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2022-11-03 03:36:15,514 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 48 [2022-11-03 03:36:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:15,518 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2022-11-03 03:36:15,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:36:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2022-11-03 03:36:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 03:36:15,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:15,525 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:36:15,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:36:15,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash 191482210, now seen corresponding path program 1 times [2022-11-03 03:36:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227779469] [2022-11-03 03:36:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:36:15,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:15,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227779469] [2022-11-03 03:36:15,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227779469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:15,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:15,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925957500] [2022-11-03 03:36:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:15,952 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:36:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:16,102 INFO L93 Difference]: Finished difference Result 146 states and 190 transitions. [2022-11-03 03:36:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2022-11-03 03:36:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:16,110 INFO L225 Difference]: With dead ends: 146 [2022-11-03 03:36:16,112 INFO L226 Difference]: Without dead ends: 91 [2022-11-03 03:36:16,113 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 [2022-11-03 03:36:16,117 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:16,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:36:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-03 03:36:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-03 03:36:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:36:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2022-11-03 03:36:16,136 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 49 [2022-11-03 03:36:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:16,136 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2022-11-03 03:36:16,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:36:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2022-11-03 03:36:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 03:36:16,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:16,139 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:36:16,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash -477483680, now seen corresponding path program 1 times [2022-11-03 03:36:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566619347] [2022-11-03 03:36:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:36:16,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:16,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566619347] [2022-11-03 03:36:16,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566619347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:16,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005613027] [2022-11-03 03:36:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:16,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:16,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:16,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:36:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:16,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:36:16,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:36:16,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:36:16,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005613027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:36:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1820863454] [2022-11-03 03:36:16,964 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:36:16,965 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:16,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:16,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:16,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:36:28,343 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:36:28,730 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:37:07,495 WARN L234 SmtUtils]: Spent 15.71s on a formula simplification. DAG size of input: 573 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:24,876 WARN L234 SmtUtils]: Spent 15.96s on a formula simplification. DAG size of input: 575 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:37:26,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1820863454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:26,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:37:26,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2022-11-03 03:37:26,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651014012] [2022-11-03 03:37:26,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:26,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:37:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:26,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:37:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:37:26,256 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:37:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:31,459 INFO L93 Difference]: Finished difference Result 244 states and 379 transitions. [2022-11-03 03:37:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:37:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 53 [2022-11-03 03:37:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:31,464 INFO L225 Difference]: With dead ends: 244 [2022-11-03 03:37:31,464 INFO L226 Difference]: Without dead ends: 165 [2022-11-03 03:37:31,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:37:31,467 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 99 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:31,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1483 Invalid, 825 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:37:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-03 03:37:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 112. [2022-11-03 03:37:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 84 states have internal predecessors, (120), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:37:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 157 transitions. [2022-11-03 03:37:31,549 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 157 transitions. Word has length 53 [2022-11-03 03:37:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:31,550 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 157 transitions. [2022-11-03 03:37:31,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:37:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 157 transitions. [2022-11-03 03:37:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:37:31,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:31,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:31,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:31,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:31,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:31,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash -203317183, now seen corresponding path program 1 times [2022-11-03 03:37:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:31,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048293445] [2022-11-03 03:37:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:37:31,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:31,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048293445] [2022-11-03 03:37:31,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048293445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:31,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:31,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:37:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484847627] [2022-11-03 03:37:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:37:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:37:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:37:31,880 INFO L87 Difference]: Start difference. First operand 112 states and 157 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:37:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:32,083 INFO L93 Difference]: Finished difference Result 260 states and 379 transitions. [2022-11-03 03:37:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:37:32,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2022-11-03 03:37:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:32,086 INFO L225 Difference]: With dead ends: 260 [2022-11-03 03:37:32,087 INFO L226 Difference]: Without dead ends: 162 [2022-11-03 03:37:32,088 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 [2022-11-03 03:37:32,089 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 46 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:32,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 200 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:37:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-03 03:37:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2022-11-03 03:37:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 128 states have (on average 1.5234375) internal successors, (195), 129 states have internal predecessors, (195), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:37:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 232 transitions. [2022-11-03 03:37:32,217 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 232 transitions. Word has length 54 [2022-11-03 03:37:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:32,220 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 232 transitions. [2022-11-03 03:37:32,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:37:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 232 transitions. [2022-11-03 03:37:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:37:32,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:32,234 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:32,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:37:32,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash 321288137, now seen corresponding path program 1 times [2022-11-03 03:37:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:32,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971970054] [2022-11-03 03:37:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:37:32,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:32,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971970054] [2022-11-03 03:37:32,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971970054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:32,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789715057] [2022-11-03 03:37:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:32,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:32,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:37:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:32,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:37:32,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:37:32,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:37:32,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789715057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1225883442] [2022-11-03 03:37:32,918 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-03 03:37:32,918 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:37:32,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:37:32,920 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:37:32,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:47,788 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:37:48,183 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-03 03:37:50,340 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 251 for LOIs [2022-11-03 03:37:52,981 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-03 03:37:53,033 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-03 03:37:53,084 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-11-03 03:37:55,780 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:43,885 WARN L234 SmtUtils]: Spent 25.74s on a formula simplification. DAG size of input: 584 DAG size of output: 453 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:04,086 WARN L234 SmtUtils]: Spent 18.74s on a formula simplification. DAG size of input: 586 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:16,211 WARN L234 SmtUtils]: Spent 11.57s on a formula simplification. DAG size of input: 558 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:28,318 WARN L234 SmtUtils]: Spent 11.50s on a formula simplification. DAG size of input: 556 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:52,332 WARN L234 SmtUtils]: Spent 17.53s on a formula simplification. DAG size of input: 478 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:26,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1225883442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:26,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:40:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [4, 4, 4] total 39 [2022-11-03 03:40:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142200577] [2022-11-03 03:40:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 03:40:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 03:40:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:40:26,797 INFO L87 Difference]: Start difference. First operand 157 states and 232 transitions. Second operand has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-03 03:40:38,430 WARN L234 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 568 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:48,605 WARN L234 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 455 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:55,011 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 452 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:13,444 WARN L234 SmtUtils]: Spent 13.43s on a formula simplification. DAG size of input: 527 DAG size of output: 446 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:31,477 WARN L234 SmtUtils]: Spent 16.49s on a formula simplification. DAG size of input: 594 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:39,047 INFO L93 Difference]: Finished difference Result 399 states and 634 transitions. [2022-11-03 03:41:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-03 03:41:39,048 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 55 [2022-11-03 03:41:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:39,050 INFO L225 Difference]: With dead ends: 399 [2022-11-03 03:41:39,050 INFO L226 Difference]: Without dead ends: 297 [2022-11-03 03:41:39,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 213.6s TimeCoverageRelationStatistics Valid=166, Invalid=1904, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 03:41:39,053 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 239 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:39,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2137 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 03:41:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-03 03:41:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 184. [2022-11-03 03:41:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.4931506849315068) internal successors, (218), 147 states have internal predecessors, (218), 25 states have call successors, (25), 14 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-03 03:41:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 267 transitions. [2022-11-03 03:41:39,213 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 267 transitions. Word has length 55 [2022-11-03 03:41:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:39,213 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 267 transitions. [2022-11-03 03:41:39,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-03 03:41:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 267 transitions. [2022-11-03 03:41:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 03:41:39,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:39,216 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:39,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:39,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1772375298, now seen corresponding path program 1 times [2022-11-03 03:41:39,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:39,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225914006] [2022-11-03 03:41:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:39,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:41:39,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:39,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225914006] [2022-11-03 03:41:39,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225914006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:39,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422882043] [2022-11-03 03:41:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:39,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:39,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:39,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:39,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:41:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:39,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:41:39,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:41:39,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:41:39,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422882043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899882833] [2022-11-03 03:41:39,922 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2022-11-03 03:41:39,922 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:41:39,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:41:39,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:41:39,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:41:51,502 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:41:51,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:42:38,279 WARN L234 SmtUtils]: Spent 26.37s on a formula simplification. DAG size of input: 581 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:55,853 WARN L234 SmtUtils]: Spent 15.90s on a formula simplification. DAG size of input: 583 DAG size of output: 313 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:08,975 WARN L234 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 570 DAG size of output: 416 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:20,424 WARN L234 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 568 DAG size of output: 425 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:32,190 WARN L234 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 568 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:44,124 WARN L234 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 566 DAG size of output: 419 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:45,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1899882833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:45,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:43:45,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 4, 4] total 23 [2022-11-03 03:43:45,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801050014] [2022-11-03 03:43:45,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:45,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:43:45,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:43:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:43:45,526 INFO L87 Difference]: Start difference. First operand 184 states and 267 transitions. Second operand has 18 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:43:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:49,225 INFO L93 Difference]: Finished difference Result 414 states and 652 transitions. [2022-11-03 03:43:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 03:43:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 57 [2022-11-03 03:43:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:49,230 INFO L225 Difference]: With dead ends: 414 [2022-11-03 03:43:49,230 INFO L226 Difference]: Without dead ends: 312 [2022-11-03 03:43:49,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 113.7s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:43:49,232 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 132 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:49,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 923 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:43:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-03 03:43:49,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 194. [2022-11-03 03:43:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 156 states have (on average 1.4935897435897436) internal successors, (233), 157 states have internal predecessors, (233), 25 states have call successors, (25), 14 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-03 03:43:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 282 transitions. [2022-11-03 03:43:49,419 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 282 transitions. Word has length 57 [2022-11-03 03:43:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:49,420 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 282 transitions. [2022-11-03 03:43:49,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:43:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 282 transitions. [2022-11-03 03:43:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:43:49,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:49,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:49,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:49,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:43:49,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash -789181693, now seen corresponding path program 1 times [2022-11-03 03:43:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:49,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353833903] [2022-11-03 03:43:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:49,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:43:49,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:49,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353833903] [2022-11-03 03:43:49,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353833903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:49,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067668158] [2022-11-03 03:43:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:49,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:49,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:49,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:43:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:50,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:43:50,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:43:50,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:43:50,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067668158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:50,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306036910] [2022-11-03 03:43:50,243 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-03 03:43:50,243 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:43:50,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:43:50,244 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:43:50,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:44:05,559 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 453 for LOIs [2022-11-03 03:44:05,916 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-03 03:44:07,624 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 249 for LOIs [2022-11-03 03:44:11,282 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-03 03:44:11,326 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-03 03:44:11,368 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-11-03 03:44:17,023 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:44:30,507 WARN L234 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 453 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:44:37,831 WARN L234 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 476 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:44:54,103 WARN L234 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 558 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:17,920 WARN L234 SmtUtils]: Spent 17.35s on a formula simplification. DAG size of input: 478 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:25,921 WARN L234 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 500 DAG size of output: 257 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:54,152 WARN L234 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 506 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:04,613 WARN L234 SmtUtils]: Spent 9.54s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:14,312 WARN L234 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 571 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:24,569 WARN L234 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 604 DAG size of output: 446 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:24,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1306036910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:24,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:46:24,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [6, 5, 5] total 44 [2022-11-03 03:46:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120385138] [2022-11-03 03:46:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:24,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 03:46:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 03:46:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:46:24,577 INFO L87 Difference]: Start difference. First operand 194 states and 282 transitions. Second operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-03 03:47:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:00,201 INFO L93 Difference]: Finished difference Result 524 states and 852 transitions. [2022-11-03 03:47:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-03 03:47:00,209 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 58 [2022-11-03 03:47:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:00,217 INFO L225 Difference]: With dead ends: 524 [2022-11-03 03:47:00,218 INFO L226 Difference]: Without dead ends: 405 [2022-11-03 03:47:00,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 152.5s TimeCoverageRelationStatistics Valid=193, Invalid=2563, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 03:47:00,220 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 244 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:00,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2111 Invalid, 2820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-03 03:47:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-03 03:47:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 295. [2022-11-03 03:47:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 247 states have (on average 1.5587044534412955) internal successors, (385), 249 states have internal predecessors, (385), 31 states have call successors, (31), 19 states have call predecessors, (31), 16 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2022-11-03 03:47:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 447 transitions. [2022-11-03 03:47:00,534 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 447 transitions. Word has length 58 [2022-11-03 03:47:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:00,534 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 447 transitions. [2022-11-03 03:47:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-03 03:47:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 447 transitions. [2022-11-03 03:47:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 03:47:00,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:00,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:00,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:00,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1393893186, now seen corresponding path program 1 times [2022-11-03 03:47:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:00,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181682535] [2022-11-03 03:47:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:00,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:47:00,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:00,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181682535] [2022-11-03 03:47:00,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181682535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:00,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376710022] [2022-11-03 03:47:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:00,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:00,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:00,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4dc32d-ce80-4e48-82d1-6e7bb96347ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:47:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:47:01,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:47:01,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:47:01,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376710022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [205562370] [2022-11-03 03:47:01,331 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-11-03 03:47:01,331 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:01,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:01,332 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:01,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:14,204 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 03:47:14,575 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-03 03:47:16,042 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 249 for LOIs [2022-11-03 03:47:40,819 INFO L197 IcfgInterpreter]: Interpreting procedure queue with input of size 455 for LOIs [2022-11-03 03:47:41,099 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 446 for LOIs [2022-11-03 03:47:41,383 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-03 03:47:41,423 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 477 for LOIs [2022-11-03 03:47:43,377 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-11-03 03:47:45,323 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:48:13,476 WARN L234 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 558 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:48:28,531 WARN L234 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 478 DAG size of output: 249 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)