./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9 --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 ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 --- 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-6b4ec56 [2022-11-20 20:05:40,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:05:40,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:05:40,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:05:40,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:05:40,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:05:40,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:05:40,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:05:40,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:05:40,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:05:40,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:05:40,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:05:40,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:05:40,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:05:40,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:05:40,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:05:40,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:05:40,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:05:40,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:05:40,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:05:40,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:05:40,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:05:40,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:05:40,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:05:40,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:05:40,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:05:40,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:05:40,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:05:40,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:05:40,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:05:40,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:05:40,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:05:40,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:05:40,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:05:40,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:05:40,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:05:40,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:05:40,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:05:40,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:05:40,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:05:40,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:05:40,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:05:40,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:05:40,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:05:40,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:05:40,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:05:40,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:05:40,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:05:40,454 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:05:40,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:05:40,454 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:05:40,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:05:40,455 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:05:40,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:05:40,455 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:05:40,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:05:40,455 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:05:40,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:05:40,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:05:40,456 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:05:40,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:05:40,457 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:05:40,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:05:40,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:05:40,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:05:40,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:05:40,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:05:40,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:05:40,461 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:05:40,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:05:40,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:05:40,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:05:40,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:05:40,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:05:40,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:05:40,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:05:40,463 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:05:40,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:05:40,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:05:40,465 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:05:40,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:05:40,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:05:40,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:05:40,465 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_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 [2022-11-20 20:05:40,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:05:40,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:05:40,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:05:40,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:05:40,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:05:40,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-11-20 20:05:43,787 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:05:44,140 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:05:44,141 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-11-20 20:05:44,174 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/data/d1334d9e6/e71c30dd86344a319635b6d5c6d2582a/FLAGa27832799 [2022-11-20 20:05:44,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/data/d1334d9e6/e71c30dd86344a319635b6d5c6d2582a [2022-11-20 20:05:44,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:05:44,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:05:44,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:05:44,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:05:44,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:05:44,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:05:44" (1/1) ... [2022-11-20 20:05:44,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357b0c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:44, skipping insertion in model container [2022-11-20 20:05:44,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:05:44" (1/1) ... [2022-11-20 20:05:44,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:05:44,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:05:44,741 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-11-20 20:05:44,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:05:44,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:05:44,947 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-11-20 20:05:44,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:05:45,016 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:05:45,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45 WrapperNode [2022-11-20 20:05:45,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:05:45,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:05:45,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:05:45,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:05:45,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,090 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 35, calls inlined = 27, statements flattened = 523 [2022-11-20 20:05:45,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:05:45,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:05:45,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:05:45,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:05:45,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:05:45,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:05:45,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:05:45,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:05:45,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (1/1) ... [2022-11-20 20:05:45,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:05:45,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:05:45,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:05:45,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:05:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:05:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:05:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:05:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:05:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:05:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:05:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:05:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:05:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:05:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:05:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:05:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:05:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:05:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:05:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:05:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:05:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:05:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:05:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:05:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:05:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:05:45,421 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:05:45,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:05:46,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:05:46,336 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:05:46,336 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:05:46,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:05:46 BoogieIcfgContainer [2022-11-20 20:05:46,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:05:46,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:05:46,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:05:46,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:05:46,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:05:44" (1/3) ... [2022-11-20 20:05:46,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758d4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:05:46, skipping insertion in model container [2022-11-20 20:05:46,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:05:45" (2/3) ... [2022-11-20 20:05:46,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758d4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:05:46, skipping insertion in model container [2022-11-20 20:05:46,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:05:46" (3/3) ... [2022-11-20 20:05:46,352 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2022-11-20 20:05:46,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:05:46,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:05:46,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:05:46,428 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;@d3aeafc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:05:46,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:05:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 20:05:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 20:05:46,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:46,443 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:05:46,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2091842526, now seen corresponding path program 1 times [2022-11-20 20:05:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:46,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583645878] [2022-11-20 20:05:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:05:46,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:46,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583645878] [2022-11-20 20:05:46,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583645878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:46,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:46,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:05:46,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316759016] [2022-11-20 20:05:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:46,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:05:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:05:46,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:05:46,988 INFO L87 Difference]: Start difference. First operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:05:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:47,082 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-11-20 20:05:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:05:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2022-11-20 20:05:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:47,092 INFO L225 Difference]: With dead ends: 120 [2022-11-20 20:05:47,093 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 20:05:47,096 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 [2022-11-20 20:05:47,108 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:47,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:05:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 20:05:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-20 20:05:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 20:05:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2022-11-20 20:05:47,176 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 42 [2022-11-20 20:05:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:47,178 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2022-11-20 20:05:47,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:05:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2022-11-20 20:05:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 20:05:47,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:47,183 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:05:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:05:47,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:47,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2101937107, now seen corresponding path program 1 times [2022-11-20 20:05:47,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:47,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521701745] [2022-11-20 20:05:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:05:47,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:47,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521701745] [2022-11-20 20:05:47,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521701745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:47,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:47,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:05:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660079786] [2022-11-20 20:05:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:47,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:05:47,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:05:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:47,460 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:05:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:47,564 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2022-11-20 20:05:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:05:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-11-20 20:05:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:47,572 INFO L225 Difference]: With dead ends: 116 [2022-11-20 20:05:47,575 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 20:05:47,576 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 [2022-11-20 20:05:47,578 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:47,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:05:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 20:05:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-20 20:05:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 20:05:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2022-11-20 20:05:47,599 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 43 [2022-11-20 20:05:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:47,600 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2022-11-20 20:05:47,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:05:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2022-11-20 20:05:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 20:05:47,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:47,604 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] [2022-11-20 20:05:47,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:05:47,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1788242173, now seen corresponding path program 1 times [2022-11-20 20:05:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092694568] [2022-11-20 20:05:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:05:47,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:47,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092694568] [2022-11-20 20:05:47,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092694568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:05:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447557433] [2022-11-20 20:05:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:47,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:05:47,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:05:47,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:05:47,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:05:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:48,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:05:48,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:05:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:05:48,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:05:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:05:48,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447557433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:05:48,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702309304] [2022-11-20 20:05:48,311 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-20 20:05:48,311 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:05:48,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:05:48,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:05:48,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:05:57,235 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-20 20:05:57,649 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:06:24,620 WARN L233 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 564 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:34,397 WARN L233 SmtUtils]: Spent 9.33s on a formula simplification. DAG size of input: 566 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:35,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [702309304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:35,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:06:35,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2022-11-20 20:06:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044598110] [2022-11-20 20:06:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:06:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:06:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:06:35,769 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 20:06:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:39,352 INFO L93 Difference]: Finished difference Result 214 states and 337 transitions. [2022-11-20 20:06:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:06:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 47 [2022-11-20 20:06:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:39,359 INFO L225 Difference]: With dead ends: 214 [2022-11-20 20:06:39,359 INFO L226 Difference]: Without dead ends: 150 [2022-11-20 20:06:39,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:06:39,361 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 103 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:39,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1286 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 20:06:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-20 20:06:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2022-11-20 20:06:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.48) internal successors, (111), 76 states have internal predecessors, (111), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 20:06:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2022-11-20 20:06:39,418 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 47 [2022-11-20 20:06:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:39,418 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2022-11-20 20:06:39,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 20:06:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2022-11-20 20:06:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 20:06:39,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:39,420 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] [2022-11-20 20:06:39,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:06:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:06:39,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:06:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1227442075, now seen corresponding path program 1 times [2022-11-20 20:06:39,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:39,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447249468] [2022-11-20 20:06:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:39,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:06:39,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:39,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447249468] [2022-11-20 20:06:39,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447249468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:39,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:39,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:06:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88087222] [2022-11-20 20:06:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:06:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:39,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:06:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:06:39,712 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:06:39,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:39,867 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2022-11-20 20:06:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:06:39,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-11-20 20:06:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:39,870 INFO L225 Difference]: With dead ends: 230 [2022-11-20 20:06:39,870 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 20:06:39,871 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 [2022-11-20 20:06:39,872 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:39,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 166 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:06:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 20:06:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-11-20 20:06:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.55) internal successors, (186), 121 states have internal predecessors, (186), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 20:06:39,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 211 transitions. [2022-11-20 20:06:39,996 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 211 transitions. Word has length 48 [2022-11-20 20:06:39,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:39,997 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 211 transitions. [2022-11-20 20:06:39,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:06:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 211 transitions. [2022-11-20 20:06:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 20:06:39,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:39,999 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] [2022-11-20 20:06:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:06:40,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:06:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash 205106759, now seen corresponding path program 1 times [2022-11-20 20:06:40,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291251402] [2022-11-20 20:06:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:40,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:06:40,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291251402] [2022-11-20 20:06:40,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291251402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:06:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397176329] [2022-11-20 20:06:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:40,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:06:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:06:40,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:06:40,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:06:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:40,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:06:40,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:06:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:06:40,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:06:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:06:40,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397176329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:06:40,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [861878798] [2022-11-20 20:06:40,430 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-20 20:06:40,430 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:06:40,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:06:40,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:06:40,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:06:53,081 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-20 20:06:53,449 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-20 20:06:55,237 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-20 20:06:55,290 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 251 for LOIs [2022-11-20 20:06:59,212 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-20 20:06:59,268 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-20 20:06:59,323 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-11-20 20:07:03,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:07:31,916 WARN L233 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 585 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:07:43,425 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 587 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:07:48,928 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 341 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:07:56,942 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 561 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:14,995 WARN L233 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 478 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:43,216 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 506 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:55,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [861878798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:08:55,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:08:55,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [4, 4, 4] total 44 [2022-11-20 20:08:55,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793734530] [2022-11-20 20:08:55,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:08:55,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 20:08:55,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:08:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 20:08:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1776, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 20:08:55,519 INFO L87 Difference]: Start difference. First operand 142 states and 211 transitions. Second operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 20:09:11,466 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 507 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:09:26,343 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 497 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:09:34,214 WARN L233 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 511 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:09:43,813 WARN L233 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 506 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:09:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:59,468 INFO L93 Difference]: Finished difference Result 374 states and 594 transitions. [2022-11-20 20:09:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 20:09:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-11-20 20:09:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:59,472 INFO L225 Difference]: With dead ends: 374 [2022-11-20 20:09:59,472 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 20:09:59,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 165.6s TimeCoverageRelationStatistics Valid=204, Invalid=2766, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 20:09:59,475 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 250 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 2463 Invalid, 2807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-20 20:09:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 20:09:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 241. [2022-11-20 20:09:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 207 states have (on average 1.603864734299517) internal successors, (332), 209 states have internal predecessors, (332), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-20 20:09:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 372 transitions. [2022-11-20 20:09:59,641 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 372 transitions. Word has length 49 [2022-11-20 20:09:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:59,641 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 372 transitions. [2022-11-20 20:09:59,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 20:09:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 372 transitions. [2022-11-20 20:09:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 20:09:59,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:59,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:59,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 20:09:59,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:09:59,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash 587029707, now seen corresponding path program 1 times [2022-11-20 20:09:59,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:59,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702597736] [2022-11-20 20:09:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:59,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:10:00,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:00,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702597736] [2022-11-20 20:10:00,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702597736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:10:00,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356022620] [2022-11-20 20:10:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:00,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:10:00,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:10:00,070 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:10:00,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:10:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:00,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 20:10:00,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:10:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:10:00,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:10:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:10:00,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356022620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:10:00,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [133851714] [2022-11-20 20:10:00,412 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-20 20:10:00,412 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:10:00,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:10:00,413 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:10:00,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:10:18,455 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-20 20:10:18,761 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 467 for LOIs [2022-11-20 20:10:43,863 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 457 for LOIs [2022-11-20 20:10:44,166 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 465 for LOIs [2022-11-20 20:10:51,595 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-20 20:10:51,628 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-20 20:10:51,665 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 239 for LOIs [2022-11-20 20:10:51,783 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:11:26,500 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 559 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:33,072 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 556 DAG size of output: 318 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:50,119 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 509 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:03,878 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 505 DAG size of output: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:10,407 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 518 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:21,394 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 504 DAG size of output: 317 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:33,224 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 506 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:45,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [133851714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:12:45,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:12:45,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [6, 5, 5] total 47 [2022-11-20 20:12:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366005928] [2022-11-20 20:12:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:12:45,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 20:12:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:12:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 20:12:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2035, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 20:12:45,552 INFO L87 Difference]: Start difference. First operand 241 states and 372 transitions. Second operand has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 20:13:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:29,506 INFO L93 Difference]: Finished difference Result 538 states and 856 transitions. [2022-11-20 20:13:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 20:13:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 52 [2022-11-20 20:13:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:29,511 INFO L225 Difference]: With dead ends: 538 [2022-11-20 20:13:29,511 INFO L226 Difference]: Without dead ends: 451 [2022-11-20 20:13:29,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 147.4s TimeCoverageRelationStatistics Valid=219, Invalid=3203, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 20:13:29,516 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 407 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:13:29,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 2175 Invalid, 2839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-20 20:13:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-20 20:13:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 273. [2022-11-20 20:13:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 239 states have (on average 1.598326359832636) internal successors, (382), 241 states have internal predecessors, (382), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-20 20:13:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 422 transitions. [2022-11-20 20:13:29,782 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 422 transitions. Word has length 52 [2022-11-20 20:13:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:29,783 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 422 transitions. [2022-11-20 20:13:29,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 20:13:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 422 transitions. [2022-11-20 20:13:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 20:13:29,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:29,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:13:29,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:13:29,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:13:29,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1902628023, now seen corresponding path program 1 times [2022-11-20 20:13:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:29,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180646584] [2022-11-20 20:13:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:29,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:13:30,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:30,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180646584] [2022-11-20 20:13:30,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180646584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:13:30,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440168256] [2022-11-20 20:13:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:30,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:13:30,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:13:30,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:13:30,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:13:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:30,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 20:13:30,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:13:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:13:30,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:13:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:13:30,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440168256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:13:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506903714] [2022-11-20 20:13:30,618 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 20:13:30,618 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:13:30,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:13:30,619 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:13:30,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:14:03,236 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-20 20:14:03,682 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-20 20:14:05,246 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-20 20:14:05,288 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 249 for LOIs [2022-11-20 20:14:08,812 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-20 20:14:08,871 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-20 20:14:08,919 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-11-20 20:14:12,816 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:14:53,863 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 555 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:01,893 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 558 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:09,965 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 557 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:18,174 WARN L233 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 561 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:31,541 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 478 DAG size of output: 249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:59,832 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 506 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:12,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1506903714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:16:12,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:16:12,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [6, 5, 5] total 49 [2022-11-20 20:16:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058587387] [2022-11-20 20:16:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:16:12,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 20:16:12,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:16:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 20:16:12,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2214, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 20:16:12,188 INFO L87 Difference]: Start difference. First operand 273 states and 422 transitions. Second operand has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 25 states have internal predecessors, (30), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 20:17:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:17:42,075 INFO L93 Difference]: Finished difference Result 800 states and 1310 transitions. [2022-11-20 20:17:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 20:17:42,076 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 25 states have internal predecessors, (30), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 56 [2022-11-20 20:17:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:17:42,080 INFO L225 Difference]: With dead ends: 800 [2022-11-20 20:17:42,080 INFO L226 Difference]: Without dead ends: 640 [2022-11-20 20:17:42,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 193.4s TimeCoverageRelationStatistics Valid=320, Invalid=3970, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 20:17:42,083 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 353 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:17:42,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 3004 Invalid, 4220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 4160 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2022-11-20 20:17:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-11-20 20:17:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 291. [2022-11-20 20:17:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 257 states have (on average 1.6031128404669261) internal successors, (412), 259 states have internal predecessors, (412), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-20 20:17:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 452 transitions. [2022-11-20 20:17:42,421 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 452 transitions. Word has length 56 [2022-11-20 20:17:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:17:42,421 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 452 transitions. [2022-11-20 20:17:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 25 states have internal predecessors, (30), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 20:17:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 452 transitions. [2022-11-20 20:17:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 20:17:42,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:17:42,423 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 20:17:42,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:17:42,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:17:42,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:17:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:17:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1681044315, now seen corresponding path program 1 times [2022-11-20 20:17:42,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:17:42,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753215259] [2022-11-20 20:17:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:17:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:17:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:17:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:17:42,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:17:42,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753215259] [2022-11-20 20:17:42,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753215259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:17:42,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867131448] [2022-11-20 20:17:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:17:42,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:17:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:17:42,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:17:42,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_851ddc6b-7d6f-4570-8e90-3cfcba3322b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:17:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:17:43,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:17:43,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:17:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:17:43,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:17:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:17:43,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867131448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:17:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [533173895] [2022-11-20 20:17:43,159 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 20:17:43,160 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:17:43,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:17:43,160 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:17:43,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:18:14,387 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-20 20:18:14,687 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 467 for LOIs [2022-11-20 20:18:39,952 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 457 for LOIs [2022-11-20 20:18:40,254 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 465 for LOIs [2022-11-20 20:18:47,287 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-20 20:18:47,319 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-20 20:18:47,386 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 239 for LOIs [2022-11-20 20:18:47,521 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:19:11,802 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 555 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:18,491 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 557 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)