./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_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_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/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_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/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_dc45a637-d22e-49fe-98ad-9237fc29ef38/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 fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:46:11,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:46:11,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:46:11,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:46:11,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:46:11,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:46:11,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:46:11,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:46:11,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:46:11,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:46:11,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:46:11,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:46:11,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:46:11,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:46:11,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:46:11,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:46:11,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:46:11,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:46:11,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:46:11,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:46:11,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:46:11,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:46:11,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:46:11,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:46:11,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:46:11,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:46:11,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:46:11,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:46:11,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:46:11,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:46:11,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:46:11,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:46:11,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:46:11,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:46:11,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:46:11,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:46:11,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:46:11,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:46:11,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:46:11,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:46:11,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:46:11,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:46:11,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:46:11,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:46:11,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:46:11,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:46:11,340 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:46:11,340 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:46:11,340 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:46:11,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:46:11,348 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:46:11,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:46:11,350 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:46:11,350 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:46:11,350 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:46:11,351 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:46:11,351 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:46:11,351 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:46:11,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:46:11,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:46:11,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:46:11,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:46:11,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:46:11,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:46:11,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:46:11,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:46:11,354 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:46:11,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:46:11,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:46:11,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:46:11,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:46:11,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:46:11,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:46:11,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:46:11,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:46:11,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:46:11,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:46:11,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:46:11,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:46:11,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:46:11,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:46:11,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:46:11,358 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-19 15:46:11,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:46:11,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:46:11,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:46:11,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:46:11,668 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:46:11,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-19 15:46:11,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/151bd0360/f77b5831673d44979e846d379f72dbdf/FLAG764c9ef85 [2021-11-19 15:46:12,524 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:46:12,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-19 15:46:12,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/151bd0360/f77b5831673d44979e846d379f72dbdf/FLAG764c9ef85 [2021-11-19 15:46:12,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/151bd0360/f77b5831673d44979e846d379f72dbdf [2021-11-19 15:46:12,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:46:12,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:46:12,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:12,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:46:12,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:46:12,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:12" (1/1) ... [2021-11-19 15:46:12,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36612f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:12, skipping insertion in model container [2021-11-19 15:46:12,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:12" (1/1) ... [2021-11-19 15:46:12,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:46:12,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:46:13,550 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-19 15:46:13,555 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:13,585 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 15:46:13,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29c4aefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:13, skipping insertion in model container [2021-11-19 15:46:13,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:13,587 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:46:13,590 INFO L158 Benchmark]: Toolchain (without parser) took 925.52ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 103.0MB in the end (delta: 4.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 15:46:13,592 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 88.1MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:46:13,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 918.00ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 103.0MB in the end (delta: 4.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 15:46:13,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 88.1MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 918.00ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 103.0MB in the end (delta: 4.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 492]: 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/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_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/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_dc45a637-d22e-49fe-98ad-9237fc29ef38/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 fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:46:16,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:46:16,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:46:16,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:46:16,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:46:16,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:46:16,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:46:16,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:46:16,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:46:16,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:46:16,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:46:16,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:46:16,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:46:16,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:46:16,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:46:16,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:46:16,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:46:16,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:46:16,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:46:16,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:46:16,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:46:16,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:46:16,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:46:16,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:46:16,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:46:16,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:46:16,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:46:16,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:46:16,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:46:16,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:46:16,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:46:16,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:46:16,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:46:16,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:46:16,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:46:16,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:46:16,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:46:16,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:46:16,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:46:16,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:46:16,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:46:16,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:46:16,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:46:16,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:46:16,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:46:16,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:46:16,391 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:46:16,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:46:16,392 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:46:16,392 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:46:16,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:46:16,392 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:46:16,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:46:16,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:46:16,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:46:16,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:46:16,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:46:16,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:46:16,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:46:16,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:46:16,395 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:46:16,395 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:46:16,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:46:16,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:46:16,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:46:16,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:46:16,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:46:16,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:46:16,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:46:16,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:46:16,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:46:16,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:46:16,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:46:16,397 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:46:16,397 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:16,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:46:16,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:46:16,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:46:16,398 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-19 15:46:16,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:46:16,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:46:16,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:46:16,879 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:46:16,882 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:46:16,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-19 15:46:16,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/f9ba6e644/aca234fb3fea4009bf7b32d931b5c32e/FLAGb7765e0d2 [2021-11-19 15:46:17,880 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:46:17,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-19 15:46:17,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/f9ba6e644/aca234fb3fea4009bf7b32d931b5c32e/FLAGb7765e0d2 [2021-11-19 15:46:18,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/data/f9ba6e644/aca234fb3fea4009bf7b32d931b5c32e [2021-11-19 15:46:18,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:46:18,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:46:18,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:18,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:46:18,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:46:18,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:18" (1/1) ... [2021-11-19 15:46:18,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcc5c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:18, skipping insertion in model container [2021-11-19 15:46:18,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:18" (1/1) ... [2021-11-19 15:46:18,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:46:18,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:46:18,997 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-19 15:46:19,000 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:19,018 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:46:19,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:46:19,155 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-19 15:46:19,156 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:19,163 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:46:19,292 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_dc45a637-d22e-49fe-98ad-9237fc29ef38/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-19 15:46:19,298 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:19,366 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:46:19,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19 WrapperNode [2021-11-19 15:46:19,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:19,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:46:19,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:46:19,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:46:19,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,534 INFO L137 Inliner]: procedures = 154, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1249 [2021-11-19 15:46:19,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:46:19,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:46:19,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:46:19,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:46:19,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:46:19,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:46:19,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:46:19,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:46:19,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (1/1) ... [2021-11-19 15:46:19,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:46:19,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:46:19,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:46:19,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:46:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-19 15:46:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-19 15:46:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-19 15:46:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-19 15:46:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-19 15:46:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-19 15:46:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-19 15:46:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-19 15:46:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-19 15:46:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-19 15:46:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-19 15:46:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-19 15:46:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-19 15:46:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-19 15:46:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-19 15:46:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-19 15:46:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-19 15:46:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-19 15:46:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-19 15:46:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-19 15:46:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-19 15:46:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-19 15:46:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-19 15:46:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-19 15:46:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-19 15:46:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-19 15:46:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-19 15:46:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-19 15:46:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-19 15:46:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-19 15:46:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-19 15:46:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-19 15:46:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-19 15:46:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-19 15:46:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-19 15:46:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-19 15:46:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-19 15:46:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-19 15:46:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-19 15:46:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-19 15:46:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-19 15:46:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-19 15:46:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-19 15:46:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-19 15:46:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-19 15:46:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-19 15:46:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-19 15:46:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:46:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-19 15:46:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-19 15:46:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-19 15:46:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-19 15:46:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-19 15:46:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-19 15:46:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-19 15:46:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-19 15:46:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-19 15:46:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-19 15:46:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-19 15:46:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-19 15:46:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-19 15:46:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-19 15:46:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-19 15:46:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-19 15:46:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-19 15:46:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-19 15:46:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:46:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-19 15:46:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-19 15:46:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-19 15:46:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-19 15:46:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-19 15:46:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-19 15:46:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-19 15:46:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-19 15:46:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-19 15:46:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-19 15:46:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-19 15:46:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-19 15:46:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-19 15:46:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-19 15:46:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-19 15:46:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-19 15:46:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-19 15:46:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-19 15:46:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-19 15:46:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-19 15:46:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-19 15:46:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-19 15:46:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:46:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:46:20,180 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:46:20,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:46:21,627 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:46:21,657 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:46:21,657 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:46:21,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:46:21 BoogieIcfgContainer [2021-11-19 15:46:21,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:46:21,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:46:21,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:46:21,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:46:21,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:46:18" (1/3) ... [2021-11-19 15:46:21,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1f310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:46:21, skipping insertion in model container [2021-11-19 15:46:21,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:19" (2/3) ... [2021-11-19 15:46:21,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1f310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:46:21, skipping insertion in model container [2021-11-19 15:46:21,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:46:21" (3/3) ... [2021-11-19 15:46:21,678 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2021-11-19 15:46:21,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:46:21,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:46:21,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:46:21,778 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 15:46:21,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:46:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 604 states, 449 states have (on average 1.5144766146993318) internal successors, (680), 469 states have internal predecessors, (680), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-19 15:46:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:46:21,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:21,854 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] [2021-11-19 15:46:21,855 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1310995889, now seen corresponding path program 1 times [2021-11-19 15:46:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:21,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152534815] [2021-11-19 15:46:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:21,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:21,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:21,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:46:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:22,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:46:22,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:22,913 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 15:46:22,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:23,283 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 15:46:23,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:23,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152534815] [2021-11-19 15:46:23,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152534815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:23,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:23,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:46:23,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429267559] [2021-11-19 15:46:23,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:23,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:46:23,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:46:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:46:23,347 INFO L87 Difference]: Start difference. First operand has 604 states, 449 states have (on average 1.5144766146993318) internal successors, (680), 469 states have internal predecessors, (680), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 15:46:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:23,526 INFO L93 Difference]: Finished difference Result 939 states and 1379 transitions. [2021-11-19 15:46:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:46:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 127 [2021-11-19 15:46:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:23,573 INFO L225 Difference]: With dead ends: 939 [2021-11-19 15:46:23,573 INFO L226 Difference]: Without dead ends: 597 [2021-11-19 15:46:23,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 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 15:46:23,589 INFO L933 BasicCegarLoop]: 896 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, 896 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 15:46:23,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:23,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-19 15:46:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-19 15:46:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 443 states have (on average 1.510158013544018) internal successors, (669), 462 states have internal predecessors, (669), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-19 15:46:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 888 transitions. [2021-11-19 15:46:23,729 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 888 transitions. Word has length 127 [2021-11-19 15:46:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:23,732 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 888 transitions. [2021-11-19 15:46:23,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 15:46:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 888 transitions. [2021-11-19 15:46:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 15:46:23,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:23,753 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] [2021-11-19 15:46:23,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:46:23,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:23,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1140437170, now seen corresponding path program 1 times [2021-11-19 15:46:23,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:23,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276360054] [2021-11-19 15:46:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:23,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:23,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:23,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:46:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:24,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:46:24,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:24,765 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 15:46:24,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:25,063 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 15:46:25,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:25,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276360054] [2021-11-19 15:46:25,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276360054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:25,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:25,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:46:25,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311098262] [2021-11-19 15:46:25,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:25,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:46:25,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:46:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:46:25,069 INFO L87 Difference]: Start difference. First operand 597 states and 888 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:46:25,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:25,213 INFO L93 Difference]: Finished difference Result 1158 states and 1720 transitions. [2021-11-19 15:46:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:46:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 128 [2021-11-19 15:46:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:25,222 INFO L225 Difference]: With dead ends: 1158 [2021-11-19 15:46:25,222 INFO L226 Difference]: Without dead ends: 597 [2021-11-19 15:46:25,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 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 15:46:25,227 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 3 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3533 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 15:46:25,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3533 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-19 15:46:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-19 15:46:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 443 states have (on average 1.4943566591422122) internal successors, (662), 462 states have internal predecessors, (662), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-19 15:46:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 881 transitions. [2021-11-19 15:46:25,290 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 881 transitions. Word has length 128 [2021-11-19 15:46:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:25,292 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 881 transitions. [2021-11-19 15:46:25,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:46:25,293 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 881 transitions. [2021-11-19 15:46:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 15:46:25,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:25,304 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] [2021-11-19 15:46:25,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:25,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:25,519 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 123449077, now seen corresponding path program 1 times [2021-11-19 15:46:25,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:25,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522834251] [2021-11-19 15:46:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:25,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:25,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:25,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:25,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:46:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:25,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:25,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:26,459 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 15:46:26,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:26,861 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 15:46:26,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:26,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522834251] [2021-11-19 15:46:26,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522834251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:26,868 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:26,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:46:26,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222006546] [2021-11-19 15:46:26,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:26,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:46:26,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:46:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:46:26,881 INFO L87 Difference]: Start difference. First operand 597 states and 881 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 15:46:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:27,032 INFO L93 Difference]: Finished difference Result 1168 states and 1744 transitions. [2021-11-19 15:46:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 133 [2021-11-19 15:46:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:27,045 INFO L225 Difference]: With dead ends: 1168 [2021-11-19 15:46:27,045 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 15:46:27,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 262 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 15:46:27,054 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 795 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:27,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 883 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:46:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 15:46:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 15:46:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 444 states have (on average 1.481981981981982) internal successors, (658), 461 states have internal predecessors, (658), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-19 15:46:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 871 transitions. [2021-11-19 15:46:27,125 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 871 transitions. Word has length 133 [2021-11-19 15:46:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:27,126 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 871 transitions. [2021-11-19 15:46:27,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 15:46:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 871 transitions. [2021-11-19 15:46:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 15:46:27,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:27,142 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] [2021-11-19 15:46:27,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:27,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:27,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash 235987301, now seen corresponding path program 1 times [2021-11-19 15:46:27,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:27,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406553600] [2021-11-19 15:46:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:27,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:27,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:27,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:46:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:27,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:27,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:28,161 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 15:46:28,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:28,549 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 15:46:28,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:28,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406553600] [2021-11-19 15:46:28,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406553600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:28,550 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:28,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:28,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144883246] [2021-11-19 15:46:28,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:28,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:28,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:28,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:28,553 INFO L87 Difference]: Start difference. First operand 596 states and 871 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:46:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:28,646 INFO L93 Difference]: Finished difference Result 1161 states and 1712 transitions. [2021-11-19 15:46:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:28,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 149 [2021-11-19 15:46:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:28,654 INFO L225 Difference]: With dead ends: 1161 [2021-11-19 15:46:28,654 INFO L226 Difference]: Without dead ends: 595 [2021-11-19 15:46:28,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 295 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 15:46:28,659 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 833 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 892 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 15:46:28,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 892 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-19 15:46:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2021-11-19 15:46:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 444 states have (on average 1.4774774774774775) internal successors, (656), 460 states have internal predecessors, (656), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-19 15:46:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 867 transitions. [2021-11-19 15:46:28,710 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 867 transitions. Word has length 149 [2021-11-19 15:46:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:28,710 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 867 transitions. [2021-11-19 15:46:28,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:46:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 867 transitions. [2021-11-19 15:46:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 15:46:28,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:28,716 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] [2021-11-19 15:46:28,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:28,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:28,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:28,936 INFO L85 PathProgramCache]: Analyzing trace with hash -497393103, now seen corresponding path program 1 times [2021-11-19 15:46:28,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:28,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923019692] [2021-11-19 15:46:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:28,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:28,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:28,939 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:28,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:46:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:29,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:29,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:29,725 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 15:46:29,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:30,095 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 15:46:30,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:30,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923019692] [2021-11-19 15:46:30,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923019692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:30,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:30,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:30,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78101644] [2021-11-19 15:46:30,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:30,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:30,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:30,099 INFO L87 Difference]: Start difference. First operand 595 states and 867 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:46:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:30,232 INFO L93 Difference]: Finished difference Result 1141 states and 1670 transitions. [2021-11-19 15:46:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:30,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 150 [2021-11-19 15:46:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:30,241 INFO L225 Difference]: With dead ends: 1141 [2021-11-19 15:46:30,242 INFO L226 Difference]: Without dead ends: 592 [2021-11-19 15:46:30,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 297 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 15:46:30,246 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 805 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:30,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 869 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:46:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-19 15:46:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2021-11-19 15:46:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 444 states have (on average 1.4527027027027026) internal successors, (645), 455 states have internal predecessors, (645), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-19 15:46:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 850 transitions. [2021-11-19 15:46:30,306 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 850 transitions. Word has length 150 [2021-11-19 15:46:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:30,306 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 850 transitions. [2021-11-19 15:46:30,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:46:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 850 transitions. [2021-11-19 15:46:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-19 15:46:30,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:30,313 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 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, 1] [2021-11-19 15:46:30,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:30,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:30,529 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 803790539, now seen corresponding path program 1 times [2021-11-19 15:46:30,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:30,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583215448] [2021-11-19 15:46:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:30,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:30,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:30,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:46:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:30,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:46:30,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 15:46:31,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:46:31,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:31,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583215448] [2021-11-19 15:46:31,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583215448] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:46:31,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:46:31,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-19 15:46:31,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654119493] [2021-11-19 15:46:31,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:46:31,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:46:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:46:31,954 INFO L87 Difference]: Start difference. First operand 592 states and 850 transitions. Second operand has 8 states, 6 states have (on average 16.166666666666668) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:46:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:32,302 INFO L93 Difference]: Finished difference Result 1131 states and 1637 transitions. [2021-11-19 15:46:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:46:32,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 16.166666666666668) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 168 [2021-11-19 15:46:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:32,310 INFO L225 Difference]: With dead ends: 1131 [2021-11-19 15:46:32,311 INFO L226 Difference]: Without dead ends: 594 [2021-11-19 15:46:32,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 324 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 15:46:32,321 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 363 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5450 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 15:46:32,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5450 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-19 15:46:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-19 15:46:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 445 states have (on average 1.451685393258427) internal successors, (646), 457 states have internal predecessors, (646), 103 states have call successors, (103), 44 states have call predecessors, (103), 45 states have return successors, (104), 101 states have call predecessors, (104), 102 states have call successors, (104) [2021-11-19 15:46:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 853 transitions. [2021-11-19 15:46:32,386 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 853 transitions. Word has length 168 [2021-11-19 15:46:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:32,386 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 853 transitions. [2021-11-19 15:46:32,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 16.166666666666668) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:46:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 853 transitions. [2021-11-19 15:46:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-19 15:46:32,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:32,392 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:32,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:32,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:32,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash 795964079, now seen corresponding path program 1 times [2021-11-19 15:46:32,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:32,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412965494] [2021-11-19 15:46:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:32,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:32,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:32,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:46:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:33,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:46:33,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 15:46:33,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:46:33,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:33,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412965494] [2021-11-19 15:46:33,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412965494] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:46:33,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:46:33,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 15:46:33,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623903000] [2021-11-19 15:46:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:33,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:46:33,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:46:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:46:33,926 INFO L87 Difference]: Start difference. First operand 594 states and 853 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:46:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:34,184 INFO L93 Difference]: Finished difference Result 1132 states and 1640 transitions. [2021-11-19 15:46:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:46:34,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 169 [2021-11-19 15:46:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:34,192 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 15:46:34,192 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 15:46:34,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 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 15:46:34,196 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 361 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3776 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 15:46:34,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3776 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:46:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 15:46:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 15:46:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4506726457399104) internal successors, (647), 459 states have internal predecessors, (647), 103 states have call successors, (103), 44 states have call predecessors, (103), 46 states have return successors, (108), 101 states have call predecessors, (108), 102 states have call successors, (108) [2021-11-19 15:46:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 858 transitions. [2021-11-19 15:46:34,252 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 858 transitions. Word has length 169 [2021-11-19 15:46:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:34,253 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 858 transitions. [2021-11-19 15:46:34,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:46:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 858 transitions. [2021-11-19 15:46:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-19 15:46:34,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:34,259 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:34,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:34,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:34,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:34,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash 198107206, now seen corresponding path program 1 times [2021-11-19 15:46:34,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:34,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928128469] [2021-11-19 15:46:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:34,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:34,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:34,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:46:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:34,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:46:34,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 15:46:35,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:46:35,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:35,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928128469] [2021-11-19 15:46:35,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928128469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:35,863 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:35,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 15:46:35,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138305770] [2021-11-19 15:46:35,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:35,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:46:35,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:46:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:46:35,869 INFO L87 Difference]: Start difference. First operand 596 states and 858 transitions. Second operand has 12 states, 8 states have (on average 14.875) internal successors, (119), 12 states have internal predecessors, (119), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 15:46:36,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:36,228 INFO L93 Difference]: Finished difference Result 1120 states and 1626 transitions. [2021-11-19 15:46:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:46:36,229 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 14.875) internal successors, (119), 12 states have internal predecessors, (119), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) Word has length 170 [2021-11-19 15:46:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:36,237 INFO L225 Difference]: With dead ends: 1120 [2021-11-19 15:46:36,237 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 15:46:36,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 328 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 15:46:36,241 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 357 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 8415 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:36,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 8415 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 15:46:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 15:46:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4506726457399104) internal successors, (647), 459 states have internal predecessors, (647), 103 states have call successors, (103), 44 states have call predecessors, (103), 46 states have return successors, (107), 101 states have call predecessors, (107), 102 states have call successors, (107) [2021-11-19 15:46:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 857 transitions. [2021-11-19 15:46:36,312 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 857 transitions. Word has length 170 [2021-11-19 15:46:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:36,313 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 857 transitions. [2021-11-19 15:46:36,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 14.875) internal successors, (119), 12 states have internal predecessors, (119), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 15:46:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 857 transitions. [2021-11-19 15:46:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 15:46:36,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:36,318 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-19 15:46:36,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:36,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:36,542 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2061645928, now seen corresponding path program 2 times [2021-11-19 15:46:36,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:36,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770481441] [2021-11-19 15:46:36,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:46:36,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:36,546 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:36,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:46:36,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 15:46:36,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:46:36,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:36,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 15:46:37,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 15:46:37,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:37,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770481441] [2021-11-19 15:46:37,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770481441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:37,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:37,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:46:37,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857177559] [2021-11-19 15:46:37,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:37,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:46:37,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:46:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:46:37,475 INFO L87 Difference]: Start difference. First operand 596 states and 857 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:37,638 INFO L93 Difference]: Finished difference Result 1049 states and 1515 transitions. [2021-11-19 15:46:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:46:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 171 [2021-11-19 15:46:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:37,668 INFO L225 Difference]: With dead ends: 1049 [2021-11-19 15:46:37,668 INFO L226 Difference]: Without dead ends: 725 [2021-11-19 15:46:37,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 338 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 15:46:37,671 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 168 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:37,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2575 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:46:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-19 15:46:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 717. [2021-11-19 15:46:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 550 states have (on average 1.4763636363636363) internal successors, (812), 563 states have internal predecessors, (812), 120 states have call successors, (120), 44 states have call predecessors, (120), 46 states have return successors, (125), 118 states have call predecessors, (125), 119 states have call successors, (125) [2021-11-19 15:46:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1057 transitions. [2021-11-19 15:46:37,738 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1057 transitions. Word has length 171 [2021-11-19 15:46:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:37,739 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 1057 transitions. [2021-11-19 15:46:37,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1057 transitions. [2021-11-19 15:46:37,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-19 15:46:37,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:37,744 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-19 15:46:37,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:37,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:37,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2130759174, now seen corresponding path program 1 times [2021-11-19 15:46:37,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:37,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897201666] [2021-11-19 15:46:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:37,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:37,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:37,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:37,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:46:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:38,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:46:38,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 15:46:38,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:46:39,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:39,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897201666] [2021-11-19 15:46:39,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897201666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:39,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:39,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 15:46:39,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274818047] [2021-11-19 15:46:39,338 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:39,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:46:39,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:46:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:46:39,341 INFO L87 Difference]: Start difference. First operand 717 states and 1057 transitions. Second operand has 12 states, 8 states have (on average 16.625) internal successors, (133), 12 states have internal predecessors, (133), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 15:46:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:39,685 INFO L93 Difference]: Finished difference Result 1364 states and 2029 transitions. [2021-11-19 15:46:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:46:39,687 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 16.625) internal successors, (133), 12 states have internal predecessors, (133), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) Word has length 183 [2021-11-19 15:46:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:39,694 INFO L225 Difference]: With dead ends: 1364 [2021-11-19 15:46:39,694 INFO L226 Difference]: Without dead ends: 719 [2021-11-19 15:46:39,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 354 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 15:46:39,699 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 704 mSDsluCounter, 5459 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:39,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 6297 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:39,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-19 15:46:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2021-11-19 15:46:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 551 states have (on average 1.4754990925589837) internal successors, (813), 565 states have internal predecessors, (813), 120 states have call successors, (120), 44 states have call predecessors, (120), 47 states have return successors, (127), 118 states have call predecessors, (127), 119 states have call successors, (127) [2021-11-19 15:46:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1060 transitions. [2021-11-19 15:46:39,759 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1060 transitions. Word has length 183 [2021-11-19 15:46:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:39,760 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1060 transitions. [2021-11-19 15:46:39,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 16.625) internal successors, (133), 12 states have internal predecessors, (133), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 15:46:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1060 transitions. [2021-11-19 15:46:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-19 15:46:39,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:39,766 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:39,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:39,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:39,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash 193860863, now seen corresponding path program 1 times [2021-11-19 15:46:39,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:39,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947109607] [2021-11-19 15:46:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:39,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:39,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:39,992 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:39,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:46:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:40,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:46:40,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:46:40,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:46:41,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:41,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947109607] [2021-11-19 15:46:41,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947109607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:41,291 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:41,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 15:46:41,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059777950] [2021-11-19 15:46:41,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:41,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:46:41,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:46:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:46:41,294 INFO L87 Difference]: Start difference. First operand 719 states and 1060 transitions. Second operand has 9 states, 7 states have (on average 18.428571428571427) internal successors, (129), 9 states have internal predecessors, (129), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:46:41,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:41,576 INFO L93 Difference]: Finished difference Result 1361 states and 2023 transitions. [2021-11-19 15:46:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:46:41,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 18.428571428571427) internal successors, (129), 9 states have internal predecessors, (129), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 184 [2021-11-19 15:46:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:41,585 INFO L225 Difference]: With dead ends: 1361 [2021-11-19 15:46:41,585 INFO L226 Difference]: Without dead ends: 719 [2021-11-19 15:46:41,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 359 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 15:46:41,590 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 710 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:41,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3784 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-19 15:46:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2021-11-19 15:46:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 551 states have (on average 1.4754990925589837) internal successors, (813), 565 states have internal predecessors, (813), 120 states have call successors, (120), 44 states have call predecessors, (120), 47 states have return successors, (126), 118 states have call predecessors, (126), 119 states have call successors, (126) [2021-11-19 15:46:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1059 transitions. [2021-11-19 15:46:41,651 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1059 transitions. Word has length 184 [2021-11-19 15:46:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:41,652 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1059 transitions. [2021-11-19 15:46:41,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 18.428571428571427) internal successors, (129), 9 states have internal predecessors, (129), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:46:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1059 transitions. [2021-11-19 15:46:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-19 15:46:41,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:41,659 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-19 15:46:41,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:41,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:41,878 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 138516818, now seen corresponding path program 2 times [2021-11-19 15:46:41,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:41,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726336051] [2021-11-19 15:46:41,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:46:41,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:41,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:41,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:46:42,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 15:46:42,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:46:42,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:42,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:42,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:42,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:42,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726336051] [2021-11-19 15:46:42,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726336051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:42,761 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:42,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:42,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18085708] [2021-11-19 15:46:42,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:42,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:42,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:42,767 INFO L87 Difference]: Start difference. First operand 719 states and 1059 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:42,858 INFO L93 Difference]: Finished difference Result 1425 states and 2122 transitions. [2021-11-19 15:46:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 185 [2021-11-19 15:46:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:42,870 INFO L225 Difference]: With dead ends: 1425 [2021-11-19 15:46:42,870 INFO L226 Difference]: Without dead ends: 819 [2021-11-19 15:46:42,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 367 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 15:46:42,874 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 165 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1679 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 15:46:42,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-19 15:46:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2021-11-19 15:46:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 629 states have (on average 1.4817170111287759) internal successors, (932), 643 states have internal predecessors, (932), 134 states have call successors, (134), 44 states have call predecessors, (134), 47 states have return successors, (141), 132 states have call predecessors, (141), 133 states have call successors, (141) [2021-11-19 15:46:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1207 transitions. [2021-11-19 15:46:42,949 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1207 transitions. Word has length 185 [2021-11-19 15:46:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:42,952 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1207 transitions. [2021-11-19 15:46:42,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1207 transitions. [2021-11-19 15:46:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-19 15:46:42,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:42,959 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-19 15:46:42,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:43,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:43,174 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 152037678, now seen corresponding path program 1 times [2021-11-19 15:46:43,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:43,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045475484] [2021-11-19 15:46:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:43,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:43,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:43,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:43,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:46:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:43,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:46:43,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:46:43,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:46:44,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:44,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045475484] [2021-11-19 15:46:44,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045475484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:44,249 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:44,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 15:46:44,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720117597] [2021-11-19 15:46:44,250 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:44,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:46:44,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:46:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:46:44,251 INFO L87 Difference]: Start difference. First operand 811 states and 1207 transitions. Second operand has 9 states, 7 states have (on average 18.857142857142858) internal successors, (132), 9 states have internal predecessors, (132), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:46:44,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:44,523 INFO L93 Difference]: Finished difference Result 1547 states and 2326 transitions. [2021-11-19 15:46:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:46:44,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 18.857142857142858) internal successors, (132), 9 states have internal predecessors, (132), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 186 [2021-11-19 15:46:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:44,532 INFO L225 Difference]: With dead ends: 1547 [2021-11-19 15:46:44,532 INFO L226 Difference]: Without dead ends: 813 [2021-11-19 15:46:44,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 363 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 15:46:44,537 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 533 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:44,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 3604 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-19 15:46:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2021-11-19 15:46:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 630 states have (on average 1.480952380952381) internal successors, (933), 645 states have internal predecessors, (933), 134 states have call successors, (134), 44 states have call predecessors, (134), 48 states have return successors, (147), 132 states have call predecessors, (147), 133 states have call successors, (147) [2021-11-19 15:46:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1214 transitions. [2021-11-19 15:46:44,599 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1214 transitions. Word has length 186 [2021-11-19 15:46:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:44,600 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1214 transitions. [2021-11-19 15:46:44,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 18.857142857142858) internal successors, (132), 9 states have internal predecessors, (132), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:46:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1214 transitions. [2021-11-19 15:46:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-19 15:46:44,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:44,606 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:44,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:44,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:44,823 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1725193692, now seen corresponding path program 1 times [2021-11-19 15:46:44,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:44,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206393338] [2021-11-19 15:46:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:44,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:44,827 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:44,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:46:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:45,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:46:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:46:45,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:46:45,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:45,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206393338] [2021-11-19 15:46:45,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206393338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:45,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:45,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 15:46:45,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809798240] [2021-11-19 15:46:45,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:45,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:46:45,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:46:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:46:45,953 INFO L87 Difference]: Start difference. First operand 813 states and 1214 transitions. Second operand has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 15:46:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:46,216 INFO L93 Difference]: Finished difference Result 1551 states and 2338 transitions. [2021-11-19 15:46:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:46:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 194 [2021-11-19 15:46:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:46,225 INFO L225 Difference]: With dead ends: 1551 [2021-11-19 15:46:46,226 INFO L226 Difference]: Without dead ends: 815 [2021-11-19 15:46:46,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:46:46,230 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 353 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:46,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 3784 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-19 15:46:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 813. [2021-11-19 15:46:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 630 states have (on average 1.480952380952381) internal successors, (933), 645 states have internal predecessors, (933), 134 states have call successors, (134), 44 states have call predecessors, (134), 48 states have return successors, (147), 132 states have call predecessors, (147), 133 states have call successors, (147) [2021-11-19 15:46:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1214 transitions. [2021-11-19 15:46:46,296 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1214 transitions. Word has length 194 [2021-11-19 15:46:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:46,296 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1214 transitions. [2021-11-19 15:46:46,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 15:46:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1214 transitions. [2021-11-19 15:46:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 15:46:46,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:46,303 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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 15:46:46,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:46,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:46,523 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:46,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 603602140, now seen corresponding path program 1 times [2021-11-19 15:46:46,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:46,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247866359] [2021-11-19 15:46:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:46,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:46,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:46,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:46,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:46:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:46,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:46,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:47,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:47,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:47,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247866359] [2021-11-19 15:46:47,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247866359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:47,658 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:47,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:47,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511837971] [2021-11-19 15:46:47,658 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:47,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:47,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:47,661 INFO L87 Difference]: Start difference. First operand 813 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:47,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:47,748 INFO L93 Difference]: Finished difference Result 1705 states and 2588 transitions. [2021-11-19 15:46:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:47,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 187 [2021-11-19 15:46:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:47,760 INFO L225 Difference]: With dead ends: 1705 [2021-11-19 15:46:47,760 INFO L226 Difference]: Without dead ends: 1016 [2021-11-19 15:46:47,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 371 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 15:46:47,765 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 163 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 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 15:46:47,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 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 15:46:47,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-11-19 15:46:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1008. [2021-11-19 15:46:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 794 states have (on average 1.4962216624685138) internal successors, (1188), 809 states have internal predecessors, (1188), 165 states have call successors, (165), 44 states have call predecessors, (165), 48 states have return successors, (182), 163 states have call predecessors, (182), 164 states have call successors, (182) [2021-11-19 15:46:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1535 transitions. [2021-11-19 15:46:47,853 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1535 transitions. Word has length 187 [2021-11-19 15:46:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:47,854 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1535 transitions. [2021-11-19 15:46:47,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1535 transitions. [2021-11-19 15:46:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 15:46:47,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:47,863 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:47,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:48,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:48,082 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash 549912264, now seen corresponding path program 1 times [2021-11-19 15:46:48,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:48,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152072921] [2021-11-19 15:46:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:48,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:48,084 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:48,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:46:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:48,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:48,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:48,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:49,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:49,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152072921] [2021-11-19 15:46:49,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152072921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:49,142 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:49,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:49,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325170229] [2021-11-19 15:46:49,143 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:49,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:49,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:49,144 INFO L87 Difference]: Start difference. First operand 1008 states and 1535 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:49,238 INFO L93 Difference]: Finished difference Result 2276 states and 3528 transitions. [2021-11-19 15:46:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 195 [2021-11-19 15:46:49,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:49,252 INFO L225 Difference]: With dead ends: 2276 [2021-11-19 15:46:49,252 INFO L226 Difference]: Without dead ends: 1400 [2021-11-19 15:46:49,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 387 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 15:46:49,258 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 161 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1711 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 15:46:49,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1711 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-19 15:46:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1392. [2021-11-19 15:46:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1120 states have (on average 1.51875) internal successors, (1701), 1135 states have internal predecessors, (1701), 223 states have call successors, (223), 44 states have call predecessors, (223), 48 states have return successors, (240), 221 states have call predecessors, (240), 222 states have call successors, (240) [2021-11-19 15:46:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2164 transitions. [2021-11-19 15:46:49,371 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2164 transitions. Word has length 195 [2021-11-19 15:46:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:49,372 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2164 transitions. [2021-11-19 15:46:49,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2164 transitions. [2021-11-19 15:46:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-19 15:46:49,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:49,417 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:49,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:49,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:49,618 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1523715117, now seen corresponding path program 1 times [2021-11-19 15:46:49,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:49,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237040777] [2021-11-19 15:46:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:49,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:49,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:49,621 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:49,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:46:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:49,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:50,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:50,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:50,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:50,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237040777] [2021-11-19 15:46:50,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237040777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:50,617 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:50,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:50,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469792274] [2021-11-19 15:46:50,617 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:50,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:50,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:50,618 INFO L87 Difference]: Start difference. First operand 1392 states and 2164 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:50,790 INFO L93 Difference]: Finished difference Result 3371 states and 5339 transitions. [2021-11-19 15:46:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 196 [2021-11-19 15:46:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:50,812 INFO L225 Difference]: With dead ends: 3371 [2021-11-19 15:46:50,812 INFO L226 Difference]: Without dead ends: 2122 [2021-11-19 15:46:50,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 389 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 15:46:50,821 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 159 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1698 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 15:46:50,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-19 15:46:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2114. [2021-11-19 15:46:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 1746 states have (on average 1.5429553264604812) internal successors, (2694), 1761 states have internal predecessors, (2694), 319 states have call successors, (319), 44 states have call predecessors, (319), 48 states have return successors, (344), 317 states have call predecessors, (344), 318 states have call successors, (344) [2021-11-19 15:46:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3357 transitions. [2021-11-19 15:46:51,041 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3357 transitions. Word has length 196 [2021-11-19 15:46:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:51,042 INFO L470 AbstractCegarLoop]: Abstraction has 2114 states and 3357 transitions. [2021-11-19 15:46:51,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:51,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3357 transitions. [2021-11-19 15:46:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-19 15:46:51,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:51,073 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:51,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:51,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:51,287 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1946834624, now seen corresponding path program 1 times [2021-11-19 15:46:51,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:51,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876981276] [2021-11-19 15:46:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:51,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:51,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:51,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:51,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:46:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:51,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:51,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:52,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:52,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:52,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876981276] [2021-11-19 15:46:52,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876981276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:52,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:52,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:52,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458657173] [2021-11-19 15:46:52,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:52,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:52,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:52,442 INFO L87 Difference]: Start difference. First operand 2114 states and 3357 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:52,680 INFO L93 Difference]: Finished difference Result 5460 states and 8806 transitions. [2021-11-19 15:46:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:52,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 197 [2021-11-19 15:46:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:52,713 INFO L225 Difference]: With dead ends: 5460 [2021-11-19 15:46:52,713 INFO L226 Difference]: Without dead ends: 3500 [2021-11-19 15:46:52,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 391 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 15:46:52,725 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 157 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1698 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 15:46:52,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-11-19 15:46:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3492. [2021-11-19 15:46:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 2956 states have (on average 1.5639377537212449) internal successors, (4623), 2971 states have internal predecessors, (4623), 487 states have call successors, (487), 44 states have call predecessors, (487), 48 states have return successors, (528), 485 states have call predecessors, (528), 486 states have call successors, (528) [2021-11-19 15:46:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5638 transitions. [2021-11-19 15:46:53,069 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5638 transitions. Word has length 197 [2021-11-19 15:46:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:53,070 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 5638 transitions. [2021-11-19 15:46:53,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5638 transitions. [2021-11-19 15:46:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-19 15:46:53,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:53,085 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:53,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:53,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:53,301 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash 984162136, now seen corresponding path program 1 times [2021-11-19 15:46:53,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:53,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555041401] [2021-11-19 15:46:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:53,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:53,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:53,303 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:53,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:46:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:53,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:53,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:53,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:54,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:54,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555041401] [2021-11-19 15:46:54,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555041401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:54,278 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:54,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:54,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37898686] [2021-11-19 15:46:54,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:54,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:54,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:54,281 INFO L87 Difference]: Start difference. First operand 3492 states and 5638 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:54,719 INFO L93 Difference]: Finished difference Result 9453 states and 15408 transitions. [2021-11-19 15:46:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:54,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 191 [2021-11-19 15:46:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:54,770 INFO L225 Difference]: With dead ends: 9453 [2021-11-19 15:46:54,770 INFO L226 Difference]: Without dead ends: 6126 [2021-11-19 15:46:54,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 379 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 15:46:54,784 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 155 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 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 15:46:54,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 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 15:46:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2021-11-19 15:46:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6118. [2021-11-19 15:46:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 5198 states have (on average 1.5667564447864564) internal successors, (8144), 5213 states have internal predecessors, (8144), 871 states have call successors, (871), 44 states have call predecessors, (871), 48 states have return successors, (944), 869 states have call predecessors, (944), 870 states have call successors, (944) [2021-11-19 15:46:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 9959 transitions. [2021-11-19 15:46:55,308 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 9959 transitions. Word has length 191 [2021-11-19 15:46:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:55,309 INFO L470 AbstractCegarLoop]: Abstraction has 6118 states and 9959 transitions. [2021-11-19 15:46:55,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:46:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 9959 transitions. [2021-11-19 15:46:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 15:46:55,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:55,325 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:46:55,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:55,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:55,541 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1779124811, now seen corresponding path program 1 times [2021-11-19 15:46:55,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:55,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183731907] [2021-11-19 15:46:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:55,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:55,545 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:55,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:46:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:55,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:55,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:56,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:56,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:56,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183731907] [2021-11-19 15:46:56,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183731907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:56,593 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:56,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:56,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542421751] [2021-11-19 15:46:56,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:56,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:56,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:56,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:56,595 INFO L87 Difference]: Start difference. First operand 6118 states and 9959 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:57,180 INFO L93 Difference]: Finished difference Result 17257 states and 28328 transitions. [2021-11-19 15:46:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:57,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 199 [2021-11-19 15:46:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:57,257 INFO L225 Difference]: With dead ends: 17257 [2021-11-19 15:46:57,257 INFO L226 Difference]: Without dead ends: 11312 [2021-11-19 15:46:57,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 395 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 15:46:57,284 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 153 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1704 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 15:46:57,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-11-19 15:46:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11304. [2021-11-19 15:46:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11304 states, 9680 states have (on average 1.575309917355372) internal successors, (15249), 9695 states have internal predecessors, (15249), 1575 states have call successors, (1575), 44 states have call predecessors, (1575), 48 states have return successors, (1712), 1573 states have call predecessors, (1712), 1574 states have call successors, (1712) [2021-11-19 15:46:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 18536 transitions. [2021-11-19 15:46:58,386 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 18536 transitions. Word has length 199 [2021-11-19 15:46:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:58,387 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 18536 transitions. [2021-11-19 15:46:58,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:46:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 18536 transitions. [2021-11-19 15:46:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 15:46:58,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:58,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:58,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:58,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:58,624 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1793027632, now seen corresponding path program 1 times [2021-11-19 15:46:58,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:58,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998799224] [2021-11-19 15:46:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:58,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:58,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:58,627 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:58,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 15:46:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:58,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:58,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:59,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:46:59,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:59,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998799224] [2021-11-19 15:46:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998799224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:59,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:46:59,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022967146] [2021-11-19 15:46:59,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:59,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:46:59,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:46:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:46:59,723 INFO L87 Difference]: Start difference. First operand 11304 states and 18536 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:00,878 INFO L93 Difference]: Finished difference Result 22401 states and 36772 transitions. [2021-11-19 15:47:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:00,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 199 [2021-11-19 15:47:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:00,939 INFO L225 Difference]: With dead ends: 22401 [2021-11-19 15:47:00,939 INFO L226 Difference]: Without dead ends: 11312 [2021-11-19 15:47:00,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 394 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 15:47:00,983 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 302 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1889 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 15:47:00,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1889 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-11-19 15:47:02,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11304. [2021-11-19 15:47:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11304 states, 9680 states have (on average 1.568698347107438) internal successors, (15185), 9695 states have internal predecessors, (15185), 1575 states have call successors, (1575), 44 states have call predecessors, (1575), 48 states have return successors, (1712), 1573 states have call predecessors, (1712), 1574 states have call successors, (1712) [2021-11-19 15:47:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 18472 transitions. [2021-11-19 15:47:02,133 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 18472 transitions. Word has length 199 [2021-11-19 15:47:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:02,134 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 18472 transitions. [2021-11-19 15:47:02,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 18472 transitions. [2021-11-19 15:47:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-19 15:47:02,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:02,152 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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 15:47:02,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:02,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:02,368 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:02,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -612978825, now seen corresponding path program 1 times [2021-11-19 15:47:02,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:02,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7066644] [2021-11-19 15:47:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:02,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:02,371 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:02,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 15:47:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:02,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:47:02,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:03,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:03,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:03,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7066644] [2021-11-19 15:47:03,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7066644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:03,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:03,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:47:03,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644482826] [2021-11-19 15:47:03,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:03,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:03,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:03,555 INFO L87 Difference]: Start difference. First operand 11304 states and 18472 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:04,465 INFO L93 Difference]: Finished difference Result 30421 states and 49409 transitions. [2021-11-19 15:47:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:04,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 200 [2021-11-19 15:47:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:04,547 INFO L225 Difference]: With dead ends: 30421 [2021-11-19 15:47:04,547 INFO L226 Difference]: Without dead ends: 19314 [2021-11-19 15:47:04,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 397 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 15:47:04,577 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 151 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1693 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 15:47:04,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1693 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19314 states. [2021-11-19 15:47:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19314 to 19306. [2021-11-19 15:47:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19306 states, 16594 states have (on average 1.5360973845968422) internal successors, (25490), 16609 states have internal predecessors, (25490), 2663 states have call successors, (2663), 44 states have call predecessors, (2663), 48 states have return successors, (2928), 2661 states have call predecessors, (2928), 2662 states have call successors, (2928) [2021-11-19 15:47:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 31081 transitions. [2021-11-19 15:47:06,174 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 31081 transitions. Word has length 200 [2021-11-19 15:47:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:06,174 INFO L470 AbstractCegarLoop]: Abstraction has 19306 states and 31081 transitions. [2021-11-19 15:47:06,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 31081 transitions. [2021-11-19 15:47:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-19 15:47:06,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:06,200 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:47:06,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:06,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:06,417 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 166441101, now seen corresponding path program 1 times [2021-11-19 15:47:06,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:06,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365949633] [2021-11-19 15:47:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:06,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:06,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:06,420 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:06,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:47:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:06,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:47:06,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:07,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:07,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:07,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365949633] [2021-11-19 15:47:07,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365949633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:07,496 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:07,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:47:07,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588295191] [2021-11-19 15:47:07,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:07,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:07,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:07,498 INFO L87 Difference]: Start difference. First operand 19306 states and 31081 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:09,441 INFO L93 Difference]: Finished difference Result 56082 states and 90554 transitions. [2021-11-19 15:47:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:09,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 201 [2021-11-19 15:47:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:09,596 INFO L225 Difference]: With dead ends: 56082 [2021-11-19 15:47:09,596 INFO L226 Difference]: Without dead ends: 36980 [2021-11-19 15:47:09,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 399 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 15:47:09,646 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 149 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1704 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 15:47:09,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36980 states. [2021-11-19 15:47:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36980 to 36972. [2021-11-19 15:47:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36972 states, 31956 states have (on average 1.5347039679559393) internal successors, (49043), 31971 states have internal predecessors, (49043), 4967 states have call successors, (4967), 44 states have call predecessors, (4967), 48 states have return successors, (5488), 4965 states have call predecessors, (5488), 4966 states have call successors, (5488) [2021-11-19 15:47:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36972 states to 36972 states and 59498 transitions. [2021-11-19 15:47:12,297 INFO L78 Accepts]: Start accepts. Automaton has 36972 states and 59498 transitions. Word has length 201 [2021-11-19 15:47:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:12,298 INFO L470 AbstractCegarLoop]: Abstraction has 36972 states and 59498 transitions. [2021-11-19 15:47:12,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 36972 states and 59498 transitions. [2021-11-19 15:47:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 15:47:12,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:12,329 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:47:12,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-19 15:47:12,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:12,548 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash -658326382, now seen corresponding path program 1 times [2021-11-19 15:47:12,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:12,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423909898] [2021-11-19 15:47:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:12,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:12,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:12,551 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:12,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 15:47:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:12,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:47:12,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:13,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:13,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:13,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423909898] [2021-11-19 15:47:13,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423909898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:13,617 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:13,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:47:13,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870182008] [2021-11-19 15:47:13,618 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:13,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:13,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:13,619 INFO L87 Difference]: Start difference. First operand 36972 states and 59498 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:47:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:17,480 INFO L93 Difference]: Finished difference Result 107534 states and 173746 transitions. [2021-11-19 15:47:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:17,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 195 [2021-11-19 15:47:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:17,789 INFO L225 Difference]: With dead ends: 107534 [2021-11-19 15:47:17,789 INFO L226 Difference]: Without dead ends: 70774 [2021-11-19 15:47:17,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 387 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 15:47:17,882 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 147 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1706 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 15:47:17,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1706 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70774 states. [2021-11-19 15:47:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70774 to 70766. [2021-11-19 15:47:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70766 states, 61398 states have (on average 1.5367927294048667) internal successors, (94356), 61413 states have internal predecessors, (94356), 9319 states have call successors, (9319), 44 states have call predecessors, (9319), 48 states have return successors, (10352), 9317 states have call predecessors, (10352), 9318 states have call successors, (10352) [2021-11-19 15:47:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70766 states to 70766 states and 114027 transitions. [2021-11-19 15:47:23,983 INFO L78 Accepts]: Start accepts. Automaton has 70766 states and 114027 transitions. Word has length 195 [2021-11-19 15:47:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:23,983 INFO L470 AbstractCegarLoop]: Abstraction has 70766 states and 114027 transitions. [2021-11-19 15:47:23,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:47:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 70766 states and 114027 transitions. [2021-11-19 15:47:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-19 15:47:24,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:24,011 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 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] [2021-11-19 15:47:24,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:24,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:24,228 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1754430279, now seen corresponding path program 1 times [2021-11-19 15:47:24,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:24,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877793393] [2021-11-19 15:47:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:24,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:24,230 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:24,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc45a637-d22e-49fe-98ad-9237fc29ef38/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 15:47:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:24,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:47:24,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:24,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:47:25,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:25,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877793393] [2021-11-19 15:47:25,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877793393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:25,211 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:25,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:47:25,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067756074] [2021-11-19 15:47:25,211 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:25,213 INFO L87 Difference]: Start difference. First operand 70766 states and 114027 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:47:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:32,929 INFO L93 Difference]: Finished difference Result 137142 states and 221486 transitions. [2021-11-19 15:47:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 203 [2021-11-19 15:47:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:33,596 INFO L225 Difference]: With dead ends: 137142 [2021-11-19 15:47:33,597 INFO L226 Difference]: Without dead ends: 136818 [2021-11-19 15:47:33,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 403 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 15:47:33,635 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 145 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1704 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 15:47:33,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136818 states.