./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS --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 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a --- 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-8393723 [2022-11-19 08:07:45,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:07:45,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:07:45,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:07:45,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:07:45,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:07:45,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:07:45,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:07:45,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:07:45,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:07:45,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:07:45,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:07:45,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:07:45,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:07:45,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:07:45,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:07:45,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:07:45,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:07:45,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:07:45,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:07:45,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:07:45,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:07:45,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:07:45,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:07:45,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:07:45,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:07:45,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:07:45,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:07:45,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:07:45,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:07:45,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:07:45,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:07:45,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:07:45,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:07:45,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:07:45,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:07:45,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:07:45,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:07:45,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:07:45,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:07:45,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:07:45,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:07:45,191 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:07:45,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:07:45,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:07:45,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:07:45,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:07:45,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:07:45,193 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:07:45,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:07:45,193 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:07:45,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:07:45,195 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:07:45,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:07:45,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:07:45,195 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:07:45,195 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:07:45,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:07:45,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:07:45,196 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:07:45,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:07:45,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:07:45,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:07:45,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:07:45,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:07:45,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:07:45,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:07:45,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:07:45,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:07:45,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:07:45,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:07:45,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:07:45,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:07:45,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:07:45,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:45,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:07:45,200 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:07:45,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:07:45,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:07:45,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:07:45,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:07:45,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:07:45,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:07:45,201 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_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a [2022-11-19 08:07:45,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:07:45,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:07:45,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:07:45,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:07:45,489 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:07:45,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2022-11-19 08:07:45,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/data/d4422b044/2b426d68c0224ea7aebdfd75d8a793fc/FLAGb296f15db [2022-11-19 08:07:46,246 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:07:46,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2022-11-19 08:07:46,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/data/d4422b044/2b426d68c0224ea7aebdfd75d8a793fc/FLAGb296f15db [2022-11-19 08:07:46,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/data/d4422b044/2b426d68c0224ea7aebdfd75d8a793fc [2022-11-19 08:07:46,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:07:46,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:07:46,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:46,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:07:46,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:07:46,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:46" (1/1) ... [2022-11-19 08:07:46,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eea4108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:46, skipping insertion in model container [2022-11-19 08:07:46,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:46" (1/1) ... [2022-11-19 08:07:46,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:07:46,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:07:46,974 WARN L234 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_711b7fd3-7101-4254-91b8-19782103537a/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2022-11-19 08:07:47,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:47,235 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:07:47,274 WARN L234 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_711b7fd3-7101-4254-91b8-19782103537a/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2022-11-19 08:07:47,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:47,382 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:07:47,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47 WrapperNode [2022-11-19 08:07:47,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:47,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:47,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:07:47,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:07:47,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,487 INFO L138 Inliner]: procedures = 130, calls = 215, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 978 [2022-11-19 08:07:47,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:47,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:07:47,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:07:47,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:07:47,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:07:47,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:07:47,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:07:47,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:07:47,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (1/1) ... [2022-11-19 08:07:47,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:47,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:07:47,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:07:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 08:07:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 08:07:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 08:07:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 08:07:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 08:07:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 08:07:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 08:07:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 08:07:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 08:07:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 08:07:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 08:07:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 08:07:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 08:07:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 08:07:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 08:07:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 08:07:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 08:07:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 08:07:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 08:07:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 08:07:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 08:07:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 08:07:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 08:07:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:07:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 08:07:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 08:07:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 08:07:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 08:07:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 08:07:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 08:07:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 08:07:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 08:07:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 08:07:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 08:07:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 08:07:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 08:07:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 08:07:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 08:07:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 08:07:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 08:07:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:07:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 08:07:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 08:07:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 08:07:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 08:07:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:07:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:07:48,056 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:07:48,058 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:07:49,092 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:07:49,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:07:49,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:07:49,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:49 BoogieIcfgContainer [2022-11-19 08:07:49,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:07:49,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:07:49,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:07:49,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:07:49,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:46" (1/3) ... [2022-11-19 08:07:49,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae535c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:49, skipping insertion in model container [2022-11-19 08:07:49,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:47" (2/3) ... [2022-11-19 08:07:49,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae535c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:49, skipping insertion in model container [2022-11-19 08:07:49,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:49" (3/3) ... [2022-11-19 08:07:49,642 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product23.cil.c [2022-11-19 08:07:49,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:07:49,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:07:49,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:07:49,754 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;@6367393e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:07:49,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:07:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 08:07:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 08:07:49,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:49,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:49,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash 207041302, now seen corresponding path program 1 times [2022-11-19 08:07:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555493475] [2022-11-19 08:07:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:07:50,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:50,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555493475] [2022-11-19 08:07:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555493475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:50,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:50,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:07:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201193380] [2022-11-19 08:07:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:50,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:07:50,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:07:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:07:50,199 INFO L87 Difference]: Start difference. First operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:07:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:50,362 INFO L93 Difference]: Finished difference Result 252 states and 335 transitions. [2022-11-19 08:07:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:07:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-19 08:07:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:50,376 INFO L225 Difference]: With dead ends: 252 [2022-11-19 08:07:50,376 INFO L226 Difference]: Without dead ends: 169 [2022-11-19 08:07:50,381 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 [2022-11-19 08:07:50,384 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:50,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-19 08:07:50,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-19 08:07:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 08:07:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 225 transitions. [2022-11-19 08:07:50,444 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 225 transitions. Word has length 60 [2022-11-19 08:07:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:50,446 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 225 transitions. [2022-11-19 08:07:50,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:07:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 225 transitions. [2022-11-19 08:07:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 08:07:50,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:50,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:50,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:07:50,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:50,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1665728976, now seen corresponding path program 1 times [2022-11-19 08:07:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:50,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045436221] [2022-11-19 08:07:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:07:50,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:50,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045436221] [2022-11-19 08:07:50,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045436221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:50,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:50,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507251005] [2022-11-19 08:07:50,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:50,779 INFO L87 Difference]: Start difference. First operand 169 states and 225 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:07:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:50,981 INFO L93 Difference]: Finished difference Result 248 states and 320 transitions. [2022-11-19 08:07:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-19 08:07:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:50,990 INFO L225 Difference]: With dead ends: 248 [2022-11-19 08:07:50,990 INFO L226 Difference]: Without dead ends: 171 [2022-11-19 08:07:50,993 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 [2022-11-19 08:07:50,994 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:50,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-19 08:07:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-19 08:07:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 08:07:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 227 transitions. [2022-11-19 08:07:51,030 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 227 transitions. Word has length 61 [2022-11-19 08:07:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:51,030 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 227 transitions. [2022-11-19 08:07:51,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:07:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 227 transitions. [2022-11-19 08:07:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 08:07:51,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:51,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:51,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:07:51,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash 595308532, now seen corresponding path program 1 times [2022-11-19 08:07:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:51,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185860917] [2022-11-19 08:07:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:07:51,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185860917] [2022-11-19 08:07:51,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185860917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:51,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:51,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125281004] [2022-11-19 08:07:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:51,228 INFO L87 Difference]: Start difference. First operand 171 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:07:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:51,429 INFO L93 Difference]: Finished difference Result 377 states and 521 transitions. [2022-11-19 08:07:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-19 08:07:51,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:51,432 INFO L225 Difference]: With dead ends: 377 [2022-11-19 08:07:51,446 INFO L226 Difference]: Without dead ends: 224 [2022-11-19 08:07:51,447 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 [2022-11-19 08:07:51,449 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 59 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:51,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 394 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:07:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-19 08:07:51,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-11-19 08:07:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 135 states have internal predecessors, (183), 64 states have call successors, (64), 21 states have call predecessors, (64), 21 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-19 08:07:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 310 transitions. [2022-11-19 08:07:51,470 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 310 transitions. Word has length 66 [2022-11-19 08:07:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:51,471 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 310 transitions. [2022-11-19 08:07:51,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:07:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 310 transitions. [2022-11-19 08:07:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 08:07:51,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:51,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:07:51,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash -53160458, now seen corresponding path program 1 times [2022-11-19 08:07:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:51,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303582425] [2022-11-19 08:07:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:07:51,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:51,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303582425] [2022-11-19 08:07:51,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303582425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:07:51,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523813445] [2022-11-19 08:07:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:07:51,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:51,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:07:51,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:07:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:52,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:07:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:07:52,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:07:52,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523813445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:52,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832099445] [2022-11-19 08:07:52,250 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-19 08:07:52,250 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:07:52,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:07:52,259 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:07:52,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:08:32,792 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 08:08:33,113 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:08:33,443 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-19 08:08:35,424 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 08:08:35,467 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-19 08:08:39,392 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2022-11-19 08:08:42,482 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 08:08:42,518 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-19 08:08:42,560 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-19 08:08:47,790 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 242 for LOIs [2022-11-19 08:08:47,837 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:09:00,911 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:09:06,302 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:09:23,993 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:09:47,943 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:09:53,362 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 563 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:09:58,886 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:10:08,676 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 477 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:10:16,176 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 499 DAG size of output: 279 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:11:03,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [832099445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:03,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:11:03,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-19 08:11:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107052569] [2022-11-19 08:11:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:03,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-19 08:11:03,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:03,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-19 08:11:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2721, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 08:11:03,732 INFO L87 Difference]: Start difference. First operand 219 states and 310 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 08:12:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:03,337 INFO L93 Difference]: Finished difference Result 630 states and 978 transitions. [2022-11-19 08:12:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-19 08:12:03,338 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2022-11-19 08:12:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:03,342 INFO L225 Difference]: With dead ends: 630 [2022-11-19 08:12:03,342 INFO L226 Difference]: Without dead ends: 429 [2022-11-19 08:12:03,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 166.2s TimeCoverageRelationStatistics Valid=225, Invalid=3935, Unknown=0, NotChecked=0, Total=4160 [2022-11-19 08:12:03,348 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 446 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 7147 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 7188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:03,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 5214 Invalid, 7188 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [41 Valid, 7147 Invalid, 0 Unknown, 0 Unchecked, 28.5s Time] [2022-11-19 08:12:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-19 08:12:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 324. [2022-11-19 08:12:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 219 states have (on average 1.4337899543378996) internal successors, (314), 222 states have internal predecessors, (314), 76 states have call successors, (76), 30 states have call predecessors, (76), 28 states have return successors, (76), 71 states have call predecessors, (76), 75 states have call successors, (76) [2022-11-19 08:12:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 466 transitions. [2022-11-19 08:12:03,579 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 466 transitions. Word has length 67 [2022-11-19 08:12:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:03,580 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 466 transitions. [2022-11-19 08:12:03,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 08:12:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 466 transitions. [2022-11-19 08:12:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 08:12:03,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:03,584 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:03,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:03,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1071621407, now seen corresponding path program 1 times [2022-11-19 08:12:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645036801] [2022-11-19 08:12:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:12:03,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645036801] [2022-11-19 08:12:03,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645036801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:03,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:03,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249033018] [2022-11-19 08:12:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:03,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:03,879 INFO L87 Difference]: Start difference. First operand 324 states and 466 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:12:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:04,257 INFO L93 Difference]: Finished difference Result 735 states and 1088 transitions. [2022-11-19 08:12:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-19 08:12:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:04,266 INFO L225 Difference]: With dead ends: 735 [2022-11-19 08:12:04,267 INFO L226 Difference]: Without dead ends: 449 [2022-11-19 08:12:04,268 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 [2022-11-19 08:12:04,269 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 57 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:04,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 411 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:12:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-19 08:12:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 442. [2022-11-19 08:12:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 306 states have (on average 1.4640522875816993) internal successors, (448), 309 states have internal predecessors, (448), 107 states have call successors, (107), 30 states have call predecessors, (107), 28 states have return successors, (107), 102 states have call predecessors, (107), 106 states have call successors, (107) [2022-11-19 08:12:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 662 transitions. [2022-11-19 08:12:04,473 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 662 transitions. Word has length 72 [2022-11-19 08:12:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:04,474 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 662 transitions. [2022-11-19 08:12:04,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:12:04,474 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 662 transitions. [2022-11-19 08:12:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 08:12:04,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:04,477 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:04,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:12:04,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 915717312, now seen corresponding path program 1 times [2022-11-19 08:12:04,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:04,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099350978] [2022-11-19 08:12:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:04,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:12:04,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:04,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099350978] [2022-11-19 08:12:04,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099350978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:12:04,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004103824] [2022-11-19 08:12:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:04,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:04,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:04,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:12:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:04,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:04,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:12:04,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:12:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004103824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:12:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [639873302] [2022-11-19 08:12:05,050 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-19 08:12:05,051 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:12:05,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:12:05,052 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:12:05,052 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:12:41,453 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 08:12:41,766 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-19 08:12:42,077 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-19 08:12:43,658 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-19 08:12:43,695 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-11-19 08:12:47,288 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2022-11-19 08:12:52,350 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 437 for LOIs [2022-11-19 08:12:52,596 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-19 08:12:52,637 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2022-11-19 08:12:54,525 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 260 for LOIs [2022-11-19 08:12:54,597 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:13:12,681 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:13:32,045 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:13:58,822 WARN L233 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:19,836 WARN L233 SmtUtils]: Spent 20.67s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:38,810 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 479 DAG size of output: 271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:19,033 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 500 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:26,341 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 522 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:32,139 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 437 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:38,034 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 443 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:47,632 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 548 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:52,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [639873302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:52,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:15:52,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-19 08:15:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016734446] [2022-11-19 08:15:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-19 08:15:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-19 08:15:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3136, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 08:15:52,617 INFO L87 Difference]: Start difference. First operand 442 states and 662 transitions. Second operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:16:11,233 WARN L233 SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 572 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:42,615 WARN L233 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 591 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:17:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:12,745 INFO L93 Difference]: Finished difference Result 892 states and 1367 transitions. [2022-11-19 08:17:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-19 08:17:12,746 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 73 [2022-11-19 08:17:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:12,753 INFO L225 Difference]: With dead ends: 892 [2022-11-19 08:17:12,753 INFO L226 Difference]: Without dead ends: 591 [2022-11-19 08:17:12,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 227.6s TimeCoverageRelationStatistics Valid=257, Invalid=4573, Unknown=0, NotChecked=0, Total=4830 [2022-11-19 08:17:12,756 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 398 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 7071 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 7126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 7071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:12,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 5459 Invalid, 7126 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 7071 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2022-11-19 08:17:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-19 08:17:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 470. [2022-11-19 08:17:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 331 states have (on average 1.4652567975830815) internal successors, (485), 335 states have internal predecessors, (485), 109 states have call successors, (109), 31 states have call predecessors, (109), 29 states have return successors, (109), 103 states have call predecessors, (109), 108 states have call successors, (109) [2022-11-19 08:17:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 703 transitions. [2022-11-19 08:17:13,076 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 703 transitions. Word has length 73 [2022-11-19 08:17:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:13,076 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 703 transitions. [2022-11-19 08:17:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:17:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 703 transitions. [2022-11-19 08:17:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 08:17:13,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:13,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:13,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:17:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:17:13,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:17:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1541262420, now seen corresponding path program 1 times [2022-11-19 08:17:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:13,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741899279] [2022-11-19 08:17:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:17:13,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:13,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741899279] [2022-11-19 08:17:13,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741899279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:17:13,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388472913] [2022-11-19 08:17:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:13,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:17:13,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:13,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:17:13,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711b7fd3-7101-4254-91b8-19782103537a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:17:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:13,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:17:13,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:17:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:17:13,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:17:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:17:13,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388472913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:17:13,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748558660] [2022-11-19 08:17:13,940 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-19 08:17:13,940 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:17:13,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:17:13,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:17:13,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:19:36,183 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 08:19:36,495 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-19 08:19:36,866 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-19 08:19:37,217 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-19 08:19:37,290 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:19:37,592 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:20:10,262 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:20:34,841 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 547 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:20:41,556 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 549 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:20:49,235 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 569 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:09,261 WARN L233 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 545 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:26,039 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 526 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:26,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1748558660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:26,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:21:26,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 08:21:26,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969083574] [2022-11-19 08:21:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:26,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 08:21:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 08:21:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 08:21:26,046 INFO L87 Difference]: Start difference. First operand 470 states and 703 transitions. Second operand has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15)