./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs --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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:34:06,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:34:06,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:34:06,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:34:06,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:34:06,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:34:06,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:34:06,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:34:06,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:34:06,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:34:06,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:34:06,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:34:06,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:34:06,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:34:06,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:34:06,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:34:06,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:34:06,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:34:06,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:34:06,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:34:06,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:34:06,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:34:06,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:34:06,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:34:06,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:34:06,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:34:06,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:34:06,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:34:06,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:34:06,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:34:06,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:34:06,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:34:06,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:34:06,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:34:06,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:34:06,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:34:06,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:34:06,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:34:06,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:34:06,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:34:06,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:34:06,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:34:06,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:34:06,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:34:06,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:34:06,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:34:06,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:34:06,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:34:06,291 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:34:06,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:34:06,291 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:34:06,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:34:06,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:34:06,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:34:06,292 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:34:06,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:34:06,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:34:06,293 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:34:06,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:34:06,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:34:06,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:34:06,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:34:06,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:34:06,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:34:06,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:34:06,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:34:06,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:34:06,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:34:06,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:34:06,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:34:06,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:34:06,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:34:06,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:34:06,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:06,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:34:06,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:34:06,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:34:06,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:34:06,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:34:06,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:34:06,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:34:06,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:34:06,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2021-11-19 13:34:06,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:34:06,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:34:06,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:34:06,691 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:34:06,692 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:34:06,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2021-11-19 13:34:06,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/2f13bbf04/4c306fa7e9a145a68dbea9d4dffbae35/FLAG0b9e60d43 [2021-11-19 13:34:07,551 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:34:07,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2021-11-19 13:34:07,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/2f13bbf04/4c306fa7e9a145a68dbea9d4dffbae35/FLAG0b9e60d43 [2021-11-19 13:34:07,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/2f13bbf04/4c306fa7e9a145a68dbea9d4dffbae35 [2021-11-19 13:34:07,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:34:07,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:34:07,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:07,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:34:07,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:34:07,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:07" (1/1) ... [2021-11-19 13:34:07,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7914449e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:07, skipping insertion in model container [2021-11-19 13:34:07,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:07" (1/1) ... [2021-11-19 13:34:07,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:34:07,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:08,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2021-11-19 13:34:08,747 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:08,762 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:34:08,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62ee32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:08, skipping insertion in model container [2021-11-19 13:34:08,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:08,764 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:34:08,766 INFO L158 Benchmark]: Toolchain (without parser) took 1038.49ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 66.7MB in the beginning and 94.8MB in the end (delta: -28.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:34:08,767 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:34:08,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1030.89ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 66.7MB in the beginning and 95.5MB in the end (delta: -28.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:34:08,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1030.89ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 66.7MB in the beginning and 95.5MB in the end (delta: -28.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 140]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs --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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:34:11,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:34:11,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:34:11,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:34:11,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:34:11,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:34:11,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:34:11,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:34:11,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:34:11,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:34:11,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:34:11,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:34:11,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:34:11,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:34:11,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:34:11,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:34:11,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:34:11,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:34:11,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:34:11,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:34:11,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:34:11,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:34:11,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:34:11,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:34:11,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:34:11,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:34:11,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:34:11,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:34:11,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:34:11,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:34:11,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:34:11,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:34:11,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:34:11,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:34:11,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:34:11,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:34:11,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:34:11,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:34:11,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:34:11,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:34:11,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:34:11,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:34:11,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:34:11,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:34:11,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:34:11,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:34:11,553 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:34:11,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:34:11,553 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:34:11,554 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:34:11,555 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:34:11,555 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:34:11,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:34:11,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:34:11,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:34:11,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:34:11,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:34:11,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:34:11,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:34:11,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:34:11,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:34:11,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:34:11,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:34:11,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:34:11,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:34:11,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:34:11,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:34:11,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:34:11,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:34:11,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:11,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:34:11,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:34:11,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:34:11,564 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:34:11,564 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:11,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:34:11,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:34:11,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:34:11,566 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2021-11-19 13:34:12,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:34:12,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:34:12,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:34:12,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:34:12,072 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:34:12,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2021-11-19 13:34:12,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/a55824635/fbaba17ca8f144e2ac80649b10303c3d/FLAG96816570b [2021-11-19 13:34:12,977 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:34:12,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2021-11-19 13:34:13,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/a55824635/fbaba17ca8f144e2ac80649b10303c3d/FLAG96816570b [2021-11-19 13:34:13,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/data/a55824635/fbaba17ca8f144e2ac80649b10303c3d [2021-11-19 13:34:13,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:34:13,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:34:13,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:13,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:34:13,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:34:13,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:13,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d6bc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13, skipping insertion in model container [2021-11-19 13:34:13,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:13,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:34:13,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:13,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2021-11-19 13:34:14,059 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:14,073 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:34:14,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:14,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2021-11-19 13:34:14,230 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:14,238 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:34:14,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2021-11-19 13:34:14,389 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:14,482 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:34:14,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14 WrapperNode [2021-11-19 13:34:14,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:14,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:34:14,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:34:14,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:34:14,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,649 INFO L137 Inliner]: procedures = 154, calls = 290, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1260 [2021-11-19 13:34:14,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:34:14,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:34:14,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:34:14,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:34:14,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:34:14,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:34:14,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:34:14,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:34:14,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (1/1) ... [2021-11-19 13:34:14,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:14,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:34:14,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:34:14,968 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-19 13:34:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-19 13:34:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-19 13:34:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-19 13:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-19 13:34:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-19 13:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-19 13:34:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-19 13:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-19 13:34:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-19 13:34:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-19 13:34:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-19 13:34:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-19 13:34:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-19 13:34:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-19 13:34:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-19 13:34:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-19 13:34:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-19 13:34:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-19 13:34:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-19 13:34:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-19 13:34:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-19 13:34:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-19 13:34:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-19 13:34:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-19 13:34:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-19 13:34:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-19 13:34:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-19 13:34:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-19 13:34:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-19 13:34:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-19 13:34:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-19 13:34:14,975 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-19 13:34:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-19 13:34:14,975 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-19 13:34:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-19 13:34:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-19 13:34:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-19 13:34:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-19 13:34:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-19 13:34:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-19 13:34:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-19 13:34:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-19 13:34:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-19 13:34:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-19 13:34:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-19 13:34:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-19 13:34:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:34:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-19 13:34:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-19 13:34:14,982 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-19 13:34:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-19 13:34:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-19 13:34:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-19 13:34:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-19 13:34:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-19 13:34:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-19 13:34:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-19 13:34:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-19 13:34:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-19 13:34:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-19 13:34:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-19 13:34:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-19 13:34:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-19 13:34:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-19 13:34:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-19 13:34:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:34:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-19 13:34:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-19 13:34:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-19 13:34:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-19 13:34:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-19 13:34:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-19 13:34:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-19 13:34:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-19 13:34:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-19 13:34:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-19 13:34:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-19 13:34:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-19 13:34:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-19 13:34:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-19 13:34:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-19 13:34:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-19 13:34:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-19 13:34:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-19 13:34:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-19 13:34:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-19 13:34:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-19 13:34:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-19 13:34:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:34:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:34:15,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:34:15,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:34:16,619 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:34:16,635 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:34:16,635 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:34:16,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:34:16 BoogieIcfgContainer [2021-11-19 13:34:16,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:34:16,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:34:16,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:34:16,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:34:16,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:34:13" (1/3) ... [2021-11-19 13:34:16,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ae349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:34:16, skipping insertion in model container [2021-11-19 13:34:16,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:14" (2/3) ... [2021-11-19 13:34:16,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ae349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:34:16, skipping insertion in model container [2021-11-19 13:34:16,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:34:16" (3/3) ... [2021-11-19 13:34:16,648 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_productSimulator.cil.c [2021-11-19 13:34:16,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:34:16,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:34:16,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:34:16,727 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:34:16,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:34:16,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 608 states, 451 states have (on average 1.5121951219512195) internal successors, (682), 471 states have internal predecessors, (682), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-19 13:34:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-19 13:34:16,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:16,829 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:16,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash -908368288, now seen corresponding path program 1 times [2021-11-19 13:34:16,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:16,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060879940] [2021-11-19 13:34:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:16,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:16,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:16,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:34:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:34:17,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 13:34:17,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 13:34:18,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:18,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060879940] [2021-11-19 13:34:18,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060879940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:18,270 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:18,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:34:18,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332670446] [2021-11-19 13:34:18,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:18,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:34:18,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:34:18,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:34:18,315 INFO L87 Difference]: Start difference. First operand has 608 states, 451 states have (on average 1.5121951219512195) internal successors, (682), 471 states have internal predecessors, (682), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 13:34:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:18,455 INFO L93 Difference]: Finished difference Result 947 states and 1391 transitions. [2021-11-19 13:34:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:34:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 152 [2021-11-19 13:34:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:18,486 INFO L225 Difference]: With dead ends: 947 [2021-11-19 13:34:18,486 INFO L226 Difference]: Without dead ends: 601 [2021-11-19 13:34:18,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:34:18,501 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:18,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-19 13:34:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2021-11-19 13:34:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 445 states have (on average 1.5078651685393258) internal successors, (671), 464 states have internal predecessors, (671), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2021-11-19 13:34:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 894 transitions. [2021-11-19 13:34:18,639 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 894 transitions. Word has length 152 [2021-11-19 13:34:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:18,641 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 894 transitions. [2021-11-19 13:34:18,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 13:34:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 894 transitions. [2021-11-19 13:34:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-19 13:34:18,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:18,650 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:18,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:18,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:18,866 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:18,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:18,867 INFO L85 PathProgramCache]: Analyzing trace with hash -588335864, now seen corresponding path program 1 times [2021-11-19 13:34:18,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:18,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510564243] [2021-11-19 13:34:18,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:18,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:18,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:18,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:18,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:34:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:19,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:34:19,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 13:34:19,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 13:34:20,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:20,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510564243] [2021-11-19 13:34:20,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510564243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:20,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:20,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:34:20,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676701578] [2021-11-19 13:34:20,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:20,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:20,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:20,036 INFO L87 Difference]: Start difference. First operand 601 states and 894 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 13:34:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:20,142 INFO L93 Difference]: Finished difference Result 1166 states and 1732 transitions. [2021-11-19 13:34:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 174 [2021-11-19 13:34:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:20,149 INFO L225 Difference]: With dead ends: 1166 [2021-11-19 13:34:20,149 INFO L226 Difference]: Without dead ends: 601 [2021-11-19 13:34:20,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:34:20,154 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 3 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:20,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3557 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-19 13:34:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2021-11-19 13:34:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 445 states have (on average 1.4921348314606742) internal successors, (664), 464 states have internal predecessors, (664), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2021-11-19 13:34:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 887 transitions. [2021-11-19 13:34:20,198 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 887 transitions. Word has length 174 [2021-11-19 13:34:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:20,199 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 887 transitions. [2021-11-19 13:34:20,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 13:34:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 887 transitions. [2021-11-19 13:34:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 13:34:20,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:20,206 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:20,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:20,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:20,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1239383395, now seen corresponding path program 1 times [2021-11-19 13:34:20,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:20,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121290167] [2021-11-19 13:34:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:20,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:20,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:20,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:34:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:20,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:20,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-19 13:34:21,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 13:34:21,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:21,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121290167] [2021-11-19 13:34:21,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121290167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:21,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:21,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:34:21,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25564295] [2021-11-19 13:34:21,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:21,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:21,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:21,542 INFO L87 Difference]: Start difference. First operand 601 states and 887 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (51), 4 states have call predecessors, (51), 3 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2021-11-19 13:34:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:21,959 INFO L93 Difference]: Finished difference Result 1176 states and 1756 transitions. [2021-11-19 13:34:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:21,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (51), 4 states have call predecessors, (51), 3 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 158 [2021-11-19 13:34:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:21,965 INFO L225 Difference]: With dead ends: 1176 [2021-11-19 13:34:21,965 INFO L226 Difference]: Without dead ends: 600 [2021-11-19 13:34:21,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:21,969 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 1404 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:21,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 880 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:34:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-19 13:34:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-19 13:34:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 446 states have (on average 1.4798206278026906) internal successors, (660), 463 states have internal predecessors, (660), 109 states have call successors, (109), 44 states have call predecessors, (109), 44 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-19 13:34:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 877 transitions. [2021-11-19 13:34:22,008 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 877 transitions. Word has length 158 [2021-11-19 13:34:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:22,009 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 877 transitions. [2021-11-19 13:34:22,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (51), 4 states have call predecessors, (51), 3 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2021-11-19 13:34:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 877 transitions. [2021-11-19 13:34:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-19 13:34:22,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:22,015 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:22,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:34:22,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:22,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash 281364851, now seen corresponding path program 1 times [2021-11-19 13:34:22,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:22,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506695433] [2021-11-19 13:34:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:22,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:22,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:22,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:34:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:22,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:22,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 13:34:22,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 13:34:23,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:23,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506695433] [2021-11-19 13:34:23,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506695433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:23,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:23,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:23,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793740937] [2021-11-19 13:34:23,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:23,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:23,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:23,200 INFO L87 Difference]: Start difference. First operand 600 states and 877 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 13:34:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:23,268 INFO L93 Difference]: Finished difference Result 1169 states and 1724 transitions. [2021-11-19 13:34:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 181 [2021-11-19 13:34:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:23,274 INFO L225 Difference]: With dead ends: 1169 [2021-11-19 13:34:23,274 INFO L226 Difference]: Without dead ends: 599 [2021-11-19 13:34:23,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:23,284 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 839 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:23,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 898 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-19 13:34:23,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-19 13:34:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 446 states have (on average 1.4753363228699552) internal successors, (658), 462 states have internal predecessors, (658), 108 states have call successors, (108), 44 states have call predecessors, (108), 44 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-19 13:34:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 873 transitions. [2021-11-19 13:34:23,332 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 873 transitions. Word has length 181 [2021-11-19 13:34:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:23,335 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 873 transitions. [2021-11-19 13:34:23,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 13:34:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 873 transitions. [2021-11-19 13:34:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-19 13:34:23,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:23,341 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:23,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:23,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:23,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:23,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1133178073, now seen corresponding path program 1 times [2021-11-19 13:34:23,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:23,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528193498] [2021-11-19 13:34:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:23,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:23,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:23,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:34:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:23,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:23,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 13:34:24,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 13:34:24,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:24,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528193498] [2021-11-19 13:34:24,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528193498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:24,831 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:24,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:24,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144533432] [2021-11-19 13:34:24,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:24,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:24,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:24,834 INFO L87 Difference]: Start difference. First operand 599 states and 873 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-19 13:34:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:24,935 INFO L93 Difference]: Finished difference Result 1149 states and 1682 transitions. [2021-11-19 13:34:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 175 [2021-11-19 13:34:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:24,941 INFO L225 Difference]: With dead ends: 1149 [2021-11-19 13:34:24,942 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 13:34:24,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:24,945 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 811 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:24,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 875 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 13:34:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 13:34:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4506726457399104) internal successors, (647), 457 states have internal predecessors, (647), 105 states have call successors, (105), 44 states have call predecessors, (105), 44 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-19 13:34:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 856 transitions. [2021-11-19 13:34:24,993 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 856 transitions. Word has length 175 [2021-11-19 13:34:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:24,994 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 856 transitions. [2021-11-19 13:34:24,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-19 13:34:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 856 transitions. [2021-11-19 13:34:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 13:34:25,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:25,000 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:25,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:25,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:25,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash 22074693, now seen corresponding path program 1 times [2021-11-19 13:34:25,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:25,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14053247] [2021-11-19 13:34:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:25,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:25,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:25,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:25,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:34:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:25,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:34:25,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 13:34:26,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-19 13:34:26,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:26,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14053247] [2021-11-19 13:34:26,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14053247] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:26,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:34:26,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-19 13:34:26,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897363375] [2021-11-19 13:34:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:26,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:26,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:34:26,894 INFO L87 Difference]: Start difference. First operand 596 states and 856 transitions. Second operand has 8 states, 6 states have (on average 18.5) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 13:34:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:27,186 INFO L93 Difference]: Finished difference Result 1139 states and 1649 transitions. [2021-11-19 13:34:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:34:27,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 18.5) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 193 [2021-11-19 13:34:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:27,193 INFO L225 Difference]: With dead ends: 1139 [2021-11-19 13:34:27,193 INFO L226 Difference]: Without dead ends: 598 [2021-11-19 13:34:27,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:34:27,200 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 363 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:27,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5492 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-19 13:34:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-19 13:34:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 447 states have (on average 1.4496644295302012) internal successors, (648), 459 states have internal predecessors, (648), 105 states have call successors, (105), 44 states have call predecessors, (105), 45 states have return successors, (106), 103 states have call predecessors, (106), 104 states have call successors, (106) [2021-11-19 13:34:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 859 transitions. [2021-11-19 13:34:27,251 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 859 transitions. Word has length 193 [2021-11-19 13:34:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:27,252 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 859 transitions. [2021-11-19 13:34:27,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 18.5) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 13:34:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 859 transitions. [2021-11-19 13:34:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-19 13:34:27,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:27,258 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:27,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:27,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:27,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash -475270051, now seen corresponding path program 1 times [2021-11-19 13:34:27,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:27,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75233589] [2021-11-19 13:34:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:27,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:27,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:27,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:27,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:34:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:27,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:34:27,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 13:34:28,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-19 13:34:28,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:28,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75233589] [2021-11-19 13:34:28,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75233589] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:28,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:34:28,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:34:28,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241421028] [2021-11-19 13:34:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:28,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:34:28,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:28,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:34:28,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:34:28,715 INFO L87 Difference]: Start difference. First operand 598 states and 859 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 13:34:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:28,926 INFO L93 Difference]: Finished difference Result 1140 states and 1652 transitions. [2021-11-19 13:34:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:34:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 194 [2021-11-19 13:34:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:28,933 INFO L225 Difference]: With dead ends: 1140 [2021-11-19 13:34:28,933 INFO L226 Difference]: Without dead ends: 600 [2021-11-19 13:34:28,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:34:28,936 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 361 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3806 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:28,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3806 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-19 13:34:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-19 13:34:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 448 states have (on average 1.4486607142857142) internal successors, (649), 461 states have internal predecessors, (649), 105 states have call successors, (105), 44 states have call predecessors, (105), 46 states have return successors, (110), 103 states have call predecessors, (110), 104 states have call successors, (110) [2021-11-19 13:34:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 864 transitions. [2021-11-19 13:34:28,978 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 864 transitions. Word has length 194 [2021-11-19 13:34:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:28,978 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 864 transitions. [2021-11-19 13:34:28,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 13:34:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 864 transitions. [2021-11-19 13:34:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 13:34:28,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:28,983 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:29,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:29,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:29,201 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1364419378, now seen corresponding path program 1 times [2021-11-19 13:34:29,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:29,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799117664] [2021-11-19 13:34:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:29,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:29,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:29,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:34:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:29,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:34:29,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-19 13:34:29,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-19 13:34:30,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:30,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799117664] [2021-11-19 13:34:30,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799117664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:30,443 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:30,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 13:34:30,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376668802] [2021-11-19 13:34:30,444 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:30,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:34:30,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:34:30,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:34:30,445 INFO L87 Difference]: Start difference. First operand 600 states and 864 transitions. Second operand has 12 states, 8 states have (on average 17.75) internal successors, (142), 12 states have internal predecessors, (142), 6 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (40), 3 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-19 13:34:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:30,765 INFO L93 Difference]: Finished difference Result 1128 states and 1638 transitions. [2021-11-19 13:34:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:34:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 17.75) internal successors, (142), 12 states have internal predecessors, (142), 6 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (40), 3 states have call predecessors, (40), 6 states have call successors, (40) Word has length 195 [2021-11-19 13:34:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:30,772 INFO L225 Difference]: With dead ends: 1128 [2021-11-19 13:34:30,773 INFO L226 Difference]: Without dead ends: 600 [2021-11-19 13:34:30,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:34:30,776 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 357 mSDsluCounter, 6798 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 7641 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:30,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 7641 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-19 13:34:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-19 13:34:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 448 states have (on average 1.4486607142857142) internal successors, (649), 461 states have internal predecessors, (649), 105 states have call successors, (105), 44 states have call predecessors, (105), 46 states have return successors, (109), 103 states have call predecessors, (109), 104 states have call successors, (109) [2021-11-19 13:34:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 863 transitions. [2021-11-19 13:34:30,837 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 863 transitions. Word has length 195 [2021-11-19 13:34:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:30,838 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 863 transitions. [2021-11-19 13:34:30,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 17.75) internal successors, (142), 12 states have internal predecessors, (142), 6 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (40), 3 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-19 13:34:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 863 transitions. [2021-11-19 13:34:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-19 13:34:30,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:30,844 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:30,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:31,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:31,065 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -970190164, now seen corresponding path program 2 times [2021-11-19 13:34:31,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:31,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038653469] [2021-11-19 13:34:31,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:31,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:31,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:31,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:31,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:34:31,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:34:31,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:31,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:31,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-19 13:34:31,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-19 13:34:32,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:32,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038653469] [2021-11-19 13:34:32,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038653469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:32,208 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:32,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:34:32,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403535727] [2021-11-19 13:34:32,208 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:32,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:32,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:32,211 INFO L87 Difference]: Start difference. First operand 600 states and 863 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:32,380 INFO L93 Difference]: Finished difference Result 1057 states and 1527 transitions. [2021-11-19 13:34:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 196 [2021-11-19 13:34:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:32,388 INFO L225 Difference]: With dead ends: 1057 [2021-11-19 13:34:32,389 INFO L226 Difference]: Without dead ends: 729 [2021-11-19 13:34:32,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:32,392 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 169 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:32,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1905 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-19 13:34:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 721. [2021-11-19 13:34:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 552 states have (on average 1.4746376811594204) internal successors, (814), 565 states have internal predecessors, (814), 122 states have call successors, (122), 44 states have call predecessors, (122), 46 states have return successors, (127), 120 states have call predecessors, (127), 121 states have call successors, (127) [2021-11-19 13:34:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1063 transitions. [2021-11-19 13:34:32,457 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1063 transitions. Word has length 196 [2021-11-19 13:34:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:32,458 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1063 transitions. [2021-11-19 13:34:32,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1063 transitions. [2021-11-19 13:34:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-19 13:34:32,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:32,465 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:32,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:32,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:32,681 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash 44656078, now seen corresponding path program 1 times [2021-11-19 13:34:32,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:32,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764478331] [2021-11-19 13:34:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:32,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:32,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:32,684 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:32,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:34:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:33,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:34:33,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-19 13:34:33,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-19 13:34:33,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:33,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764478331] [2021-11-19 13:34:33,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764478331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:33,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:33,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 13:34:33,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036287406] [2021-11-19 13:34:33,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:33,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:34:33,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:34:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:34:33,970 INFO L87 Difference]: Start difference. First operand 721 states and 1063 transitions. Second operand has 12 states, 8 states have (on average 19.5) internal successors, (156), 12 states have internal predecessors, (156), 6 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (40), 3 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-19 13:34:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:34,215 INFO L93 Difference]: Finished difference Result 1372 states and 2041 transitions. [2021-11-19 13:34:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:34:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 19.5) internal successors, (156), 12 states have internal predecessors, (156), 6 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (40), 3 states have call predecessors, (40), 6 states have call successors, (40) Word has length 208 [2021-11-19 13:34:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:34,222 INFO L225 Difference]: With dead ends: 1372 [2021-11-19 13:34:34,222 INFO L226 Difference]: Without dead ends: 723 [2021-11-19 13:34:34,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:34:34,225 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 704 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:34,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 4666 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:34,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-19 13:34:34,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-11-19 13:34:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 553 states have (on average 1.4737793851717902) internal successors, (815), 567 states have internal predecessors, (815), 122 states have call successors, (122), 44 states have call predecessors, (122), 47 states have return successors, (129), 120 states have call predecessors, (129), 121 states have call successors, (129) [2021-11-19 13:34:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1066 transitions. [2021-11-19 13:34:34,277 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1066 transitions. Word has length 208 [2021-11-19 13:34:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:34,278 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1066 transitions. [2021-11-19 13:34:34,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 19.5) internal successors, (156), 12 states have internal predecessors, (156), 6 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (40), 3 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-19 13:34:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1066 transitions. [2021-11-19 13:34:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 13:34:34,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:34,284 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:34,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:34,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:34,500 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:34,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:34,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1204755831, now seen corresponding path program 1 times [2021-11-19 13:34:34,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:34,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874363713] [2021-11-19 13:34:34,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:34,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:34,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:34,502 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:34,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:34:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:34,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:34:34,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-19 13:34:35,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-19 13:34:35,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:35,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874363713] [2021-11-19 13:34:35,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874363713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:35,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:35,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 13:34:35,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59123792] [2021-11-19 13:34:35,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:35,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:34:35,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:34:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:34:35,581 INFO L87 Difference]: Start difference. First operand 723 states and 1066 transitions. Second operand has 9 states, 7 states have (on average 22.857142857142858) internal successors, (160), 9 states have internal predecessors, (160), 4 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-19 13:34:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:35,824 INFO L93 Difference]: Finished difference Result 1369 states and 2035 transitions. [2021-11-19 13:34:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:34:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 22.857142857142858) internal successors, (160), 9 states have internal predecessors, (160), 4 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 216 [2021-11-19 13:34:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:35,833 INFO L225 Difference]: With dead ends: 1369 [2021-11-19 13:34:35,833 INFO L226 Difference]: Without dead ends: 723 [2021-11-19 13:34:35,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:34:35,837 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 537 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:35,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 3630 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-19 13:34:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-11-19 13:34:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 553 states have (on average 1.4737793851717902) internal successors, (815), 567 states have internal predecessors, (815), 122 states have call successors, (122), 44 states have call predecessors, (122), 47 states have return successors, (128), 120 states have call predecessors, (128), 121 states have call successors, (128) [2021-11-19 13:34:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1065 transitions. [2021-11-19 13:34:35,892 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1065 transitions. Word has length 216 [2021-11-19 13:34:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:35,894 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1065 transitions. [2021-11-19 13:34:35,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 22.857142857142858) internal successors, (160), 9 states have internal predecessors, (160), 4 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-19 13:34:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1065 transitions. [2021-11-19 13:34:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 13:34:35,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:35,901 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:35,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:36,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:36,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1600591610, now seen corresponding path program 1 times [2021-11-19 13:34:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:36,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825356428] [2021-11-19 13:34:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:36,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:36,132 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:36,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:34:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:36,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:34:36,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-19 13:34:36,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-19 13:34:37,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:37,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825356428] [2021-11-19 13:34:37,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825356428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:37,490 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:37,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 13:34:37,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377133912] [2021-11-19 13:34:37,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:37,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:34:37,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:34:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:34:37,492 INFO L87 Difference]: Start difference. First operand 723 states and 1065 transitions. Second operand has 9 states, 7 states have (on average 22.0) internal successors, (154), 9 states have internal predecessors, (154), 4 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-19 13:34:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:37,789 INFO L93 Difference]: Finished difference Result 1371 states and 2041 transitions. [2021-11-19 13:34:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:34:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 22.0) internal successors, (154), 9 states have internal predecessors, (154), 4 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 210 [2021-11-19 13:34:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:37,801 INFO L225 Difference]: With dead ends: 1371 [2021-11-19 13:34:37,801 INFO L226 Difference]: Without dead ends: 725 [2021-11-19 13:34:37,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:34:37,806 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 527 mSDsluCounter, 4461 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:37,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 5304 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-19 13:34:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2021-11-19 13:34:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 554 states have (on average 1.4729241877256318) internal successors, (816), 569 states have internal predecessors, (816), 122 states have call successors, (122), 44 states have call predecessors, (122), 48 states have return successors, (133), 120 states have call predecessors, (133), 121 states have call successors, (133) [2021-11-19 13:34:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1071 transitions. [2021-11-19 13:34:37,873 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1071 transitions. Word has length 210 [2021-11-19 13:34:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:37,875 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 1071 transitions. [2021-11-19 13:34:37,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 22.0) internal successors, (154), 9 states have internal predecessors, (154), 4 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-19 13:34:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1071 transitions. [2021-11-19 13:34:37,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 13:34:37,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:37,881 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:37,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:38,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:38,096 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 154101486, now seen corresponding path program 1 times [2021-11-19 13:34:38,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:38,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383364451] [2021-11-19 13:34:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:38,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:38,099 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:38,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:34:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:38,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:38,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:38,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:39,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:39,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383364451] [2021-11-19 13:34:39,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383364451] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:39,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:39,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:39,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553634707] [2021-11-19 13:34:39,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:39,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:39,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:39,313 INFO L87 Difference]: Start difference. First operand 725 states and 1071 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:39,403 INFO L93 Difference]: Finished difference Result 1437 states and 2145 transitions. [2021-11-19 13:34:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:39,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 218 [2021-11-19 13:34:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:39,411 INFO L225 Difference]: With dead ends: 1437 [2021-11-19 13:34:39,412 INFO L226 Difference]: Without dead ends: 825 [2021-11-19 13:34:39,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:39,416 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 165 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:39,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1682 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-11-19 13:34:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 817. [2021-11-19 13:34:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 632 states have (on average 1.4794303797468353) internal successors, (935), 647 states have internal predecessors, (935), 136 states have call successors, (136), 44 states have call predecessors, (136), 48 states have return successors, (149), 134 states have call predecessors, (149), 135 states have call successors, (149) [2021-11-19 13:34:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1220 transitions. [2021-11-19 13:34:39,486 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1220 transitions. Word has length 218 [2021-11-19 13:34:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:39,486 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1220 transitions. [2021-11-19 13:34:39,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1220 transitions. [2021-11-19 13:34:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-19 13:34:39,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:39,493 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:39,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:39,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:39,714 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash 463171082, now seen corresponding path program 1 times [2021-11-19 13:34:39,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:39,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659338931] [2021-11-19 13:34:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:39,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:39,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:39,717 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:39,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:34:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:40,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:40,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:40,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:40,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:40,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659338931] [2021-11-19 13:34:40,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659338931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:40,934 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:40,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:40,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915204749] [2021-11-19 13:34:40,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:40,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:40,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:40,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:40,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:40,937 INFO L87 Difference]: Start difference. First operand 817 states and 1220 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:41,020 INFO L93 Difference]: Finished difference Result 1713 states and 2600 transitions. [2021-11-19 13:34:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 219 [2021-11-19 13:34:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:41,037 INFO L225 Difference]: With dead ends: 1713 [2021-11-19 13:34:41,037 INFO L226 Difference]: Without dead ends: 1020 [2021-11-19 13:34:41,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:41,041 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 163 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:41,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1724 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-19 13:34:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1012. [2021-11-19 13:34:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 796 states have (on average 1.4949748743718594) internal successors, (1190), 811 states have internal predecessors, (1190), 167 states have call successors, (167), 44 states have call predecessors, (167), 48 states have return successors, (184), 165 states have call predecessors, (184), 166 states have call successors, (184) [2021-11-19 13:34:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1541 transitions. [2021-11-19 13:34:41,133 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1541 transitions. Word has length 219 [2021-11-19 13:34:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:41,134 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1541 transitions. [2021-11-19 13:34:41,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1541 transitions. [2021-11-19 13:34:41,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-19 13:34:41,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:41,141 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:41,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:41,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:41,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1601772600, now seen corresponding path program 1 times [2021-11-19 13:34:41,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:41,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491700847] [2021-11-19 13:34:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:41,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:41,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:41,358 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:41,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:34:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:41,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:41,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:42,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:42,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:42,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491700847] [2021-11-19 13:34:42,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491700847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:42,571 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:42,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:42,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884576711] [2021-11-19 13:34:42,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:42,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:42,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:42,574 INFO L87 Difference]: Start difference. First operand 1012 states and 1541 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:42,698 INFO L93 Difference]: Finished difference Result 2284 states and 3540 transitions. [2021-11-19 13:34:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 220 [2021-11-19 13:34:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:42,711 INFO L225 Difference]: With dead ends: 2284 [2021-11-19 13:34:42,712 INFO L226 Difference]: Without dead ends: 1404 [2021-11-19 13:34:42,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:42,719 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 161 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:42,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1724 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-19 13:34:42,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1396. [2021-11-19 13:34:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1122 states have (on average 1.517825311942959) internal successors, (1703), 1137 states have internal predecessors, (1703), 225 states have call successors, (225), 44 states have call predecessors, (225), 48 states have return successors, (242), 223 states have call predecessors, (242), 224 states have call successors, (242) [2021-11-19 13:34:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2170 transitions. [2021-11-19 13:34:42,846 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2170 transitions. Word has length 220 [2021-11-19 13:34:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:42,847 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 2170 transitions. [2021-11-19 13:34:42,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2170 transitions. [2021-11-19 13:34:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-19 13:34:42,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:42,857 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:42,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:43,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:43,074 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1003646449, now seen corresponding path program 1 times [2021-11-19 13:34:43,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:43,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019063604] [2021-11-19 13:34:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:43,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:43,078 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:43,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:34:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:43,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:43,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:43,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:44,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:44,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019063604] [2021-11-19 13:34:44,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019063604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:44,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:44,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:44,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801500533] [2021-11-19 13:34:44,228 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:44,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:44,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:44,230 INFO L87 Difference]: Start difference. First operand 1396 states and 2170 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:44,382 INFO L93 Difference]: Finished difference Result 3379 states and 5351 transitions. [2021-11-19 13:34:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 214 [2021-11-19 13:34:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:44,404 INFO L225 Difference]: With dead ends: 3379 [2021-11-19 13:34:44,404 INFO L226 Difference]: Without dead ends: 2126 [2021-11-19 13:34:44,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:44,414 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 159 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:44,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1710 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-19 13:34:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2118. [2021-11-19 13:34:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1748 states have (on average 1.5423340961098397) internal successors, (2696), 1763 states have internal predecessors, (2696), 321 states have call successors, (321), 44 states have call predecessors, (321), 48 states have return successors, (346), 319 states have call predecessors, (346), 320 states have call successors, (346) [2021-11-19 13:34:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3363 transitions. [2021-11-19 13:34:44,657 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3363 transitions. Word has length 214 [2021-11-19 13:34:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:44,658 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3363 transitions. [2021-11-19 13:34:44,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3363 transitions. [2021-11-19 13:34:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 13:34:44,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:44,670 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:44,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:44,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:44,887 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:44,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1153450946, now seen corresponding path program 1 times [2021-11-19 13:34:44,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:44,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748100582] [2021-11-19 13:34:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:44,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:44,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:44,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:44,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:34:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:45,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:45,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:45,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:45,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:45,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748100582] [2021-11-19 13:34:45,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748100582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:45,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:45,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:45,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622577715] [2021-11-19 13:34:45,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:45,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:45,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:45,943 INFO L87 Difference]: Start difference. First operand 2118 states and 3363 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:46,225 INFO L93 Difference]: Finished difference Result 5468 states and 8818 transitions. [2021-11-19 13:34:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:46,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 215 [2021-11-19 13:34:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:46,280 INFO L225 Difference]: With dead ends: 5468 [2021-11-19 13:34:46,281 INFO L226 Difference]: Without dead ends: 3504 [2021-11-19 13:34:46,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:46,292 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 157 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:46,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1710 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2021-11-19 13:34:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3496. [2021-11-19 13:34:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 2958 states have (on average 1.5635564570655849) internal successors, (4625), 2973 states have internal predecessors, (4625), 489 states have call successors, (489), 44 states have call predecessors, (489), 48 states have return successors, (530), 487 states have call predecessors, (530), 488 states have call successors, (530) [2021-11-19 13:34:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5644 transitions. [2021-11-19 13:34:46,619 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5644 transitions. Word has length 215 [2021-11-19 13:34:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:46,620 INFO L470 AbstractCegarLoop]: Abstraction has 3496 states and 5644 transitions. [2021-11-19 13:34:46,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5644 transitions. [2021-11-19 13:34:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 13:34:46,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:46,638 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:46,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:46,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:46,857 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:46,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1737035452, now seen corresponding path program 1 times [2021-11-19 13:34:46,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:46,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517628458] [2021-11-19 13:34:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:46,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:46,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:46,860 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:46,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:34:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:47,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:47,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:47,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:47,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:47,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517628458] [2021-11-19 13:34:47,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517628458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:47,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:47,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:47,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456921835] [2021-11-19 13:34:47,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:47,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:47,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:47,961 INFO L87 Difference]: Start difference. First operand 3496 states and 5644 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:48,457 INFO L93 Difference]: Finished difference Result 9461 states and 15420 transitions. [2021-11-19 13:34:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:48,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 216 [2021-11-19 13:34:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:48,517 INFO L225 Difference]: With dead ends: 9461 [2021-11-19 13:34:48,517 INFO L226 Difference]: Without dead ends: 6130 [2021-11-19 13:34:48,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:48,533 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 155 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:48,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1721 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2021-11-19 13:34:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 6122. [2021-11-19 13:34:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 5200 states have (on average 1.5665384615384614) internal successors, (8146), 5215 states have internal predecessors, (8146), 873 states have call successors, (873), 44 states have call predecessors, (873), 48 states have return successors, (946), 871 states have call predecessors, (946), 872 states have call successors, (946) [2021-11-19 13:34:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 9965 transitions. [2021-11-19 13:34:49,096 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 9965 transitions. Word has length 216 [2021-11-19 13:34:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:49,097 INFO L470 AbstractCegarLoop]: Abstraction has 6122 states and 9965 transitions. [2021-11-19 13:34:49,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 9965 transitions. [2021-11-19 13:34:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-19 13:34:49,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:49,122 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:49,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:49,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:49,340 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 87114475, now seen corresponding path program 1 times [2021-11-19 13:34:49,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:49,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695116083] [2021-11-19 13:34:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:49,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:49,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:49,343 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:49,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:34:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:49,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:49,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:50,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:50,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:50,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695116083] [2021-11-19 13:34:50,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695116083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:50,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:50,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:50,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450013659] [2021-11-19 13:34:50,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:50,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:50,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:50,466 INFO L87 Difference]: Start difference. First operand 6122 states and 9965 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:51,257 INFO L93 Difference]: Finished difference Result 17265 states and 28340 transitions. [2021-11-19 13:34:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 224 [2021-11-19 13:34:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:51,351 INFO L225 Difference]: With dead ends: 17265 [2021-11-19 13:34:51,351 INFO L226 Difference]: Without dead ends: 11316 [2021-11-19 13:34:51,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:51,375 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 153 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:51,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1715 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2021-11-19 13:34:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 11308. [2021-11-19 13:34:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11308 states, 9682 states have (on average 1.5751910762239207) internal successors, (15251), 9697 states have internal predecessors, (15251), 1577 states have call successors, (1577), 44 states have call predecessors, (1577), 48 states have return successors, (1714), 1575 states have call predecessors, (1714), 1576 states have call successors, (1714) [2021-11-19 13:34:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11308 states to 11308 states and 18542 transitions. [2021-11-19 13:34:52,315 INFO L78 Accepts]: Start accepts. Automaton has 11308 states and 18542 transitions. Word has length 224 [2021-11-19 13:34:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:52,316 INFO L470 AbstractCegarLoop]: Abstraction has 11308 states and 18542 transitions. [2021-11-19 13:34:52,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11308 states and 18542 transitions. [2021-11-19 13:34:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-19 13:34:52,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:52,353 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:52,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:52,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:52,574 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -498439502, now seen corresponding path program 1 times [2021-11-19 13:34:52,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:52,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814398467] [2021-11-19 13:34:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:52,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:52,577 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:52,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:34:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:53,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:53,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:53,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:53,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814398467] [2021-11-19 13:34:53,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814398467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:53,904 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:53,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:34:53,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314073172] [2021-11-19 13:34:53,905 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:53,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:53,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:53,906 INFO L87 Difference]: Start difference. First operand 11308 states and 18542 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:54,793 INFO L93 Difference]: Finished difference Result 22409 states and 36784 transitions. [2021-11-19 13:34:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 217 [2021-11-19 13:34:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:54,853 INFO L225 Difference]: With dead ends: 22409 [2021-11-19 13:34:54,854 INFO L226 Difference]: Without dead ends: 11316 [2021-11-19 13:34:54,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:54,899 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 302 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:54,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1892 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2021-11-19 13:34:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 11308. [2021-11-19 13:34:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11308 states, 9682 states have (on average 1.5685808717207188) internal successors, (15187), 9697 states have internal predecessors, (15187), 1577 states have call successors, (1577), 44 states have call predecessors, (1577), 48 states have return successors, (1714), 1575 states have call predecessors, (1714), 1576 states have call successors, (1714) [2021-11-19 13:34:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11308 states to 11308 states and 18478 transitions. [2021-11-19 13:34:55,968 INFO L78 Accepts]: Start accepts. Automaton has 11308 states and 18478 transitions. Word has length 217 [2021-11-19 13:34:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:55,968 INFO L470 AbstractCegarLoop]: Abstraction has 11308 states and 18478 transitions. [2021-11-19 13:34:55,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:34:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 11308 states and 18478 transitions. [2021-11-19 13:34:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-19 13:34:56,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:56,005 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:56,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:56,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:56,225 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1714159245, now seen corresponding path program 1 times [2021-11-19 13:34:56,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:56,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663244076] [2021-11-19 13:34:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:56,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:56,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:56,228 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:56,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:34:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:56,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:56,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:57,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:34:57,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:57,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663244076] [2021-11-19 13:34:57,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663244076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:57,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:34:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349621912] [2021-11-19 13:34:57,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:57,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:34:57,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:34:57,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:57,375 INFO L87 Difference]: Start difference. First operand 11308 states and 18478 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:34:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:58,498 INFO L93 Difference]: Finished difference Result 30429 states and 49421 transitions. [2021-11-19 13:34:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:34:58,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 225 [2021-11-19 13:34:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:58,579 INFO L225 Difference]: With dead ends: 30429 [2021-11-19 13:34:58,579 INFO L226 Difference]: Without dead ends: 19318 [2021-11-19 13:34:58,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:34:58,604 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 151 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:58,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1708 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:34:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19318 states. [2021-11-19 13:34:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19318 to 19310. [2021-11-19 13:34:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19310 states, 16596 states have (on average 1.5360327789828874) internal successors, (25492), 16611 states have internal predecessors, (25492), 2665 states have call successors, (2665), 44 states have call predecessors, (2665), 48 states have return successors, (2930), 2663 states have call predecessors, (2930), 2664 states have call successors, (2930) [2021-11-19 13:35:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19310 states to 19310 states and 31087 transitions. [2021-11-19 13:35:00,042 INFO L78 Accepts]: Start accepts. Automaton has 19310 states and 31087 transitions. Word has length 225 [2021-11-19 13:35:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:00,043 INFO L470 AbstractCegarLoop]: Abstraction has 19310 states and 31087 transitions. [2021-11-19 13:35:00,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:35:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 19310 states and 31087 transitions. [2021-11-19 13:35:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-19 13:35:00,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:00,084 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:00,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:00,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:00,299 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -155676781, now seen corresponding path program 1 times [2021-11-19 13:35:00,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:00,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824469540] [2021-11-19 13:35:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:00,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:00,303 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:00,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 13:35:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:00,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:35:00,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:35:01,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:35:01,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:01,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824469540] [2021-11-19 13:35:01,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824469540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:01,606 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:01,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:35:01,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655191039] [2021-11-19 13:35:01,607 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:01,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:01,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:01,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:01,609 INFO L87 Difference]: Start difference. First operand 19310 states and 31087 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:35:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:03,626 INFO L93 Difference]: Finished difference Result 56090 states and 90566 transitions. [2021-11-19 13:35:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 226 [2021-11-19 13:35:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:03,778 INFO L225 Difference]: With dead ends: 56090 [2021-11-19 13:35:03,778 INFO L226 Difference]: Without dead ends: 36984 [2021-11-19 13:35:03,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:03,822 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 149 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:03,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1716 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36984 states. [2021-11-19 13:35:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36984 to 36976. [2021-11-19 13:35:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36976 states, 31958 states have (on average 1.5346705050378622) internal successors, (49045), 31973 states have internal predecessors, (49045), 4969 states have call successors, (4969), 44 states have call predecessors, (4969), 48 states have return successors, (5490), 4967 states have call predecessors, (5490), 4968 states have call successors, (5490) [2021-11-19 13:35:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36976 states to 36976 states and 59504 transitions. [2021-11-19 13:35:07,157 INFO L78 Accepts]: Start accepts. Automaton has 36976 states and 59504 transitions. Word has length 226 [2021-11-19 13:35:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:07,158 INFO L470 AbstractCegarLoop]: Abstraction has 36976 states and 59504 transitions. [2021-11-19 13:35:07,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:35:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 36976 states and 59504 transitions. [2021-11-19 13:35:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-19 13:35:07,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:07,198 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:07,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:07,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:07,415 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash 129929154, now seen corresponding path program 1 times [2021-11-19 13:35:07,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:07,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342515991] [2021-11-19 13:35:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:07,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:07,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:07,418 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:07,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:35:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:07,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:35:07,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:35:08,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:35:08,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:08,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342515991] [2021-11-19 13:35:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342515991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:08,598 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:35:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49963879] [2021-11-19 13:35:08,599 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:08,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:08,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:08,601 INFO L87 Difference]: Start difference. First operand 36976 states and 59504 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:35:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,883 INFO L93 Difference]: Finished difference Result 107542 states and 173758 transitions. [2021-11-19 13:35:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 220 [2021-11-19 13:35:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:13,231 INFO L225 Difference]: With dead ends: 107542 [2021-11-19 13:35:13,231 INFO L226 Difference]: Without dead ends: 70778 [2021-11-19 13:35:13,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:13,353 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 147 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:13,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1724 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70778 states. [2021-11-19 13:35:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70778 to 70770. [2021-11-19 13:35:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70770 states, 61400 states have (on average 1.5367752442996743) internal successors, (94358), 61415 states have internal predecessors, (94358), 9321 states have call successors, (9321), 44 states have call predecessors, (9321), 48 states have return successors, (10354), 9319 states have call predecessors, (10354), 9320 states have call successors, (10354) [2021-11-19 13:35:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70770 states to 70770 states and 114033 transitions. [2021-11-19 13:35:18,988 INFO L78 Accepts]: Start accepts. Automaton has 70770 states and 114033 transitions. Word has length 220 [2021-11-19 13:35:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:18,989 INFO L470 AbstractCegarLoop]: Abstraction has 70770 states and 114033 transitions. [2021-11-19 13:35:18,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:35:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 70770 states and 114033 transitions. [2021-11-19 13:35:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 13:35:19,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:19,049 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:19,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:19,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:19,264 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 209745673, now seen corresponding path program 1 times [2021-11-19 13:35:19,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:19,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577428376] [2021-11-19 13:35:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:19,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:19,266 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:19,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ed4a4-690b-4ef2-984c-fb1dc77d6933/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:35:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:19,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:35:19,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:35:20,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 13:35:20,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:20,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577428376] [2021-11-19 13:35:20,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577428376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:20,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:20,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:35:20,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967142709] [2021-11-19 13:35:20,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:20,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:20,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:20,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:20,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:20,629 INFO L87 Difference]: Start difference. First operand 70770 states and 114033 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 13:35:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:28,840 INFO L93 Difference]: Finished difference Result 137150 states and 221498 transitions. [2021-11-19 13:35:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:28,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 221 [2021-11-19 13:35:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:29,358 INFO L225 Difference]: With dead ends: 137150 [2021-11-19 13:35:29,358 INFO L226 Difference]: Without dead ends: 136822 [2021-11-19 13:35:29,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:29,425 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 145 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:29,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1716 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136822 states.