./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF --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-63182f1 [2021-11-13 01:27:29,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:29,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:30,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:30,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:30,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:30,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:30,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:30,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:30,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:30,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:30,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:30,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:30,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:30,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:30,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:30,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:30,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:30,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:30,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:30,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:30,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:30,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:30,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:30,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:30,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:30,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:30,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:30,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:30,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:30,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:30,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:30,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:30,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:30,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:30,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:30,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:30,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:30,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:30,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:30,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:30,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:27:30,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:30,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:30,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:30,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:30,192 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:30,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:30,193 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:30,193 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:27:30,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:30,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:30,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:27:30,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:27:30,196 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:30,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:27:30,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:27:30,197 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:27:30,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:30,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:27:30,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:27:30,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:27:30,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:30,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:30,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:30,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:30,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:30,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:27:30,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:30,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:30,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:30,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:30,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:30,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:30,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:30,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:30,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:30,205 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:27:30,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:27:30,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:30,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:30,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:30,207 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-13 01:27:30,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:30,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:30,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:30,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:30,605 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:30,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-13 01:27:30,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/1c098d346/dd1f826934ff455c9e93826a91d2a0fd/FLAG7aa8ccd52 [2021-11-13 01:27:31,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:31,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-13 01:27:31,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/1c098d346/dd1f826934ff455c9e93826a91d2a0fd/FLAG7aa8ccd52 [2021-11-13 01:27:31,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/1c098d346/dd1f826934ff455c9e93826a91d2a0fd [2021-11-13 01:27:31,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:31,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:31,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:31,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:31,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:31,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:31" (1/1) ... [2021-11-13 01:27:31,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad145f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:31, skipping insertion in model container [2021-11-13 01:27:31,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:31" (1/1) ... [2021-11-13 01:27:31,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:31,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:32,530 WARN L228 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-13 01:27:32,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:32,556 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) [2021-11-13 01:27:32,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24a2f087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:32, skipping insertion in model container [2021-11-13 01:27:32,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:32,558 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:27:32,561 INFO L158 Benchmark]: Toolchain (without parser) took 944.26ms. Allocated memory is still 100.7MB. Free memory was 61.0MB in the beginning and 60.7MB in the end (delta: 307.5kB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-11-13 01:27:32,562 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:27:32,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 941.23ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 31.7kB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-11-13 01:27:32,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 941.23ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 31.7kB). Peak memory consumption was 8.7MB. 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF --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-63182f1 [2021-11-13 01:27:35,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:35,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:35,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:35,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:35,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:35,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:35,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:35,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:35,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:35,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:35,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:35,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:35,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:35,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:35,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:35,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:35,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:35,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:35,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:35,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:35,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:35,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:35,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:35,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:35,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:35,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:35,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:35,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:35,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:35,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:35,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:35,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:35,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:35,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:35,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:35,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:35,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:35,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:35,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:35,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:35,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:27:35,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:35,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:35,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:35,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:35,419 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:35,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:35,420 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:35,420 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:35,421 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:35,421 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:35,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:35,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:27:35,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:27:35,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:35,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:35,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:35,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:35,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:35,426 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:27:35,426 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:27:35,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:27:35,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:35,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:35,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:35,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:35,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:27:35,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:35,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:35,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:35,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:35,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:35,430 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:27:35,430 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:27:35,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:35,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:35,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:35,432 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-13 01:27:35,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:35,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:35,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:35,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:35,987 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:35,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-13 01:27:36,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/bb5116a08/4a2ac022de244ec1ade8a1c30a4b7c2e/FLAG99fdc83df [2021-11-13 01:27:36,986 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:36,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-13 01:27:37,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/bb5116a08/4a2ac022de244ec1ade8a1c30a4b7c2e/FLAG99fdc83df [2021-11-13 01:27:37,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/data/bb5116a08/4a2ac022de244ec1ade8a1c30a4b7c2e [2021-11-13 01:27:37,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:37,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:37,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:37,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:37,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:37,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:37" (1/1) ... [2021-11-13 01:27:37,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1b12e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:37, skipping insertion in model container [2021-11-13 01:27:37,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:37" (1/1) ... [2021-11-13 01:27:37,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:37,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:38,123 WARN L228 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-13 01:27:38,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:38,149 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:27:38,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:38,363 WARN L228 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-13 01:27:38,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:38,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:27:38,517 WARN L228 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_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-13 01:27:38,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:38,576 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:27:38,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38 WrapperNode [2021-11-13 01:27:38,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:38,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:38,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:27:38,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:27:38,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:38,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:27:38,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:27:38,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:27:38,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:27:38,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:27:38,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:27:38,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:27:38,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (1/1) ... [2021-11-13 01:27:38,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:27:39,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:27:39,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:27:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-13 01:27:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-13 01:27:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-13 01:27:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-13 01:27:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-13 01:27:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-13 01:27:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-13 01:27:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-13 01:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-13 01:27:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-13 01:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-13 01:27:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-13 01:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-13 01:27:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-13 01:27:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-13 01:27:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-13 01:27:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-13 01:27:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-13 01:27:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-13 01:27:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-13 01:27:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-13 01:27:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-13 01:27:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-13 01:27:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-13 01:27:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-13 01:27:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-13 01:27:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-13 01:27:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-13 01:27:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-13 01:27:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-13 01:27:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-13 01:27:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-13 01:27:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-13 01:27:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-13 01:27:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-13 01:27:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-13 01:27:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-13 01:27:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-13 01:27:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-13 01:27:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-13 01:27:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-13 01:27:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-13 01:27:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-13 01:27:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-13 01:27:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-13 01:27:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-13 01:27:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-13 01:27:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-13 01:27:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-13 01:27:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-13 01:27:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-13 01:27:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:27:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-13 01:27:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-13 01:27:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-13 01:27:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-13 01:27:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-13 01:27:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-13 01:27:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-13 01:27:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-13 01:27:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-13 01:27:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-13 01:27:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-13 01:27:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-13 01:27:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-13 01:27:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-13 01:27:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:27:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-13 01:27:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-13 01:27:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-13 01:27:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-13 01:27:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-13 01:27:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-13 01:27:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-13 01:27:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-13 01:27:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-13 01:27:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-13 01:27:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-13 01:27:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-13 01:27:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-13 01:27:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-13 01:27:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-13 01:27:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-13 01:27:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-13 01:27:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-13 01:27:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-13 01:27:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-13 01:27:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-13 01:27:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-13 01:27:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:27:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:27:43,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:27:43,816 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:27:43,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:43 BoogieIcfgContainer [2021-11-13 01:27:43,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:27:43,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:27:43,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:27:43,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:27:43,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:37" (1/3) ... [2021-11-13 01:27:43,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9d4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:43, skipping insertion in model container [2021-11-13 01:27:43,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:38" (2/3) ... [2021-11-13 01:27:43,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9d4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:43, skipping insertion in model container [2021-11-13 01:27:43,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:43" (3/3) ... [2021-11-13 01:27:43,834 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2021-11-13 01:27:43,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:27:43,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:27:43,927 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:27:43,938 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 [2021-11-13 01:27:43,939 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:27:44,004 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) [2021-11-13 01:27:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 01:27:44,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:44,052 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] [2021-11-13 01:27:44,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1310995889, now seen corresponding path program 1 times [2021-11-13 01:27:44,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:44,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326505725] [2021-11-13 01:27:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:44,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:44,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:44,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:44,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:27:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:44,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:27:44,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:27:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:45,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:27:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:45,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:27:45,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326505725] [2021-11-13 01:27:45,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326505725] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:45,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:45,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:27:45,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417797954] [2021-11-13 01:27:45,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:45,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:27:45,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:27:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:27:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:27:45,793 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) [2021-11-13 01:27:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:45,903 INFO L93 Difference]: Finished difference Result 939 states and 1379 transitions. [2021-11-13 01:27:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:27:45,913 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 [2021-11-13 01:27:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:45,952 INFO L225 Difference]: With dead ends: 939 [2021-11-13 01:27:45,953 INFO L226 Difference]: Without dead ends: 597 [2021-11-13 01:27:45,964 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 [2021-11-13 01:27:45,970 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:45,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:27:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-13 01:27:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-13 01:27:46,102 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) [2021-11-13 01:27:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 888 transitions. [2021-11-13 01:27:46,112 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 888 transitions. Word has length 127 [2021-11-13 01:27:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:46,114 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 888 transitions. [2021-11-13 01:27:46,115 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) [2021-11-13 01:27:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 888 transitions. [2021-11-13 01:27:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-13 01:27:46,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:46,131 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] [2021-11-13 01:27:46,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:27:46,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:27:46,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1140437170, now seen corresponding path program 1 times [2021-11-13 01:27:46,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:46,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050529336] [2021-11-13 01:27:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:46,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:46,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:46,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:27:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:47,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:27:47,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:27:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:47,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:27:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:47,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:27:47,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050529336] [2021-11-13 01:27:47,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050529336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:47,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:47,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:27:47,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16845578] [2021-11-13 01:27:47,792 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:47,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:47,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:27:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:47,797 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) [2021-11-13 01:27:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:47,975 INFO L93 Difference]: Finished difference Result 1158 states and 1720 transitions. [2021-11-13 01:27:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:47,976 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 [2021-11-13 01:27:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:47,988 INFO L225 Difference]: With dead ends: 1158 [2021-11-13 01:27:47,989 INFO L226 Difference]: Without dead ends: 597 [2021-11-13 01:27:47,992 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 [2021-11-13 01:27:47,994 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 3 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.58ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.27ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:47,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3533 Invalid, 18 Unknown, 0 Unchecked, 35.58ms Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 23.27ms Time] [2021-11-13 01:27:48,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-13 01:27:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-13 01:27:48,084 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) [2021-11-13 01:27:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 881 transitions. [2021-11-13 01:27:48,093 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 881 transitions. Word has length 128 [2021-11-13 01:27:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:48,095 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 881 transitions. [2021-11-13 01:27:48,095 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) [2021-11-13 01:27:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 881 transitions. [2021-11-13 01:27:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 01:27:48,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:48,104 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] [2021-11-13 01:27:48,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:27:48,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:27:48,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:48,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash 123449077, now seen corresponding path program 1 times [2021-11-13 01:27:48,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:48,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462122791] [2021-11-13 01:27:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:48,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:48,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:48,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:27:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:48,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:27:48,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:27:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 01:27:49,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:27:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:49,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:27:49,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462122791] [2021-11-13 01:27:49,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462122791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:49,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:49,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:27:49,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634733117] [2021-11-13 01:27:49,858 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:49,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:27:49,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:27:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:27:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:27:49,860 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) [2021-11-13 01:27:51,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:27:53,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:27:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:54,021 INFO L93 Difference]: Finished difference Result 1168 states and 1744 transitions. [2021-11-13 01:27:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:27:54,022 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 [2021-11-13 01:27:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:54,029 INFO L225 Difference]: With dead ends: 1168 [2021-11-13 01:27:54,029 INFO L226 Difference]: Without dead ends: 596 [2021-11-13 01:27:54,032 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 [2021-11-13 01:27:54,034 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 795 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4074.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.93ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4102.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:54,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 883 Invalid, 29 Unknown, 0 Unchecked, 5.93ms Time], IncrementalHoareTripleChecker [21 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 4102.90ms Time] [2021-11-13 01:27:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-13 01:27:54,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-13 01:27:54,072 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) [2021-11-13 01:27:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 871 transitions. [2021-11-13 01:27:54,079 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 871 transitions. Word has length 133 [2021-11-13 01:27:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:54,080 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 871 transitions. [2021-11-13 01:27:54,080 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) [2021-11-13 01:27:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 871 transitions. [2021-11-13 01:27:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-13 01:27:54,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:54,086 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] [2021-11-13 01:27:54,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:27:54,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:27:54,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash 235987301, now seen corresponding path program 1 times [2021-11-13 01:27:54,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:54,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487358788] [2021-11-13 01:27:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:54,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:54,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:54,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:27:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:54,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:27:54,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:27:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:55,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:27:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:55,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:27:55,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487358788] [2021-11-13 01:27:55,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487358788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:55,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:55,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:27:55,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777847133] [2021-11-13 01:27:55,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:55,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:27:55,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:27:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:27:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:27:55,748 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) [2021-11-13 01:27:57,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:27:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:57,856 INFO L93 Difference]: Finished difference Result 1161 states and 1712 transitions. [2021-11-13 01:27:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:27:57,857 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 [2021-11-13 01:27:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:57,863 INFO L225 Difference]: With dead ends: 1161 [2021-11-13 01:27:57,863 INFO L226 Difference]: Without dead ends: 595 [2021-11-13 01:27:57,866 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 [2021-11-13 01:27:57,867 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 833 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2045.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2059.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:57,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 892 Invalid, 5 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2059.02ms Time] [2021-11-13 01:27:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-13 01:27:57,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2021-11-13 01:27:57,904 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) [2021-11-13 01:27:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 867 transitions. [2021-11-13 01:27:57,910 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 867 transitions. Word has length 149 [2021-11-13 01:27:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:57,911 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 867 transitions. [2021-11-13 01:27:57,912 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) [2021-11-13 01:27:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 867 transitions. [2021-11-13 01:27:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 01:27:57,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:57,917 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] [2021-11-13 01:27:57,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:27:58,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:27:58,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash -497393103, now seen corresponding path program 1 times [2021-11-13 01:27:58,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:58,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991802957] [2021-11-13 01:27:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:58,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:58,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:58,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:58,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:27:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:58,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:27:58,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:27:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:59,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:27:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 01:27:59,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:27:59,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991802957] [2021-11-13 01:27:59,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991802957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:59,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:59,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:27:59,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464261545] [2021-11-13 01:27:59,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:59,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:27:59,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:27:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:27:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:27:59,614 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) [2021-11-13 01:28:01,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:28:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:01,760 INFO L93 Difference]: Finished difference Result 1141 states and 1670 transitions. [2021-11-13 01:28:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:01,761 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 [2021-11-13 01:28:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:01,769 INFO L225 Difference]: With dead ends: 1141 [2021-11-13 01:28:01,769 INFO L226 Difference]: Without dead ends: 592 [2021-11-13 01:28:01,771 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 [2021-11-13 01:28:01,773 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 805 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2066.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2094.19ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:01,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 869 Invalid, 24 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2094.19ms Time] [2021-11-13 01:28:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-13 01:28:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2021-11-13 01:28:01,829 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) [2021-11-13 01:28:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 850 transitions. [2021-11-13 01:28:01,839 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 850 transitions. Word has length 150 [2021-11-13 01:28:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:01,839 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 850 transitions. [2021-11-13 01:28:01,840 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) [2021-11-13 01:28:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 850 transitions. [2021-11-13 01:28:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 01:28:01,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:01,845 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] [2021-11-13 01:28:01,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:02,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:02,061 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:02,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash 803790539, now seen corresponding path program 1 times [2021-11-13 01:28:02,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:02,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817851803] [2021-11-13 01:28:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:02,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:02,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:02,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:28:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:02,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 01:28:02,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 01:28:03,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 01:28:03,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:03,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817851803] [2021-11-13 01:28:03,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817851803] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:28:03,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:28:03,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-13 01:28:03,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773075694] [2021-11-13 01:28:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:03,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:03,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:28:03,857 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) [2021-11-13 01:28:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:04,193 INFO L93 Difference]: Finished difference Result 1131 states and 1637 transitions. [2021-11-13 01:28:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:28:04,194 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 [2021-11-13 01:28:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:04,200 INFO L225 Difference]: With dead ends: 1131 [2021-11-13 01:28:04,201 INFO L226 Difference]: Without dead ends: 594 [2021-11-13 01:28:04,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:28:04,204 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 363 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5450 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.77ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.75ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:04,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5450 Invalid, 119 Unknown, 0 Unchecked, 16.77ms Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 178.75ms Time] [2021-11-13 01:28:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-13 01:28:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-13 01:28:04,271 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) [2021-11-13 01:28:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 853 transitions. [2021-11-13 01:28:04,277 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 853 transitions. Word has length 168 [2021-11-13 01:28:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:04,278 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 853 transitions. [2021-11-13 01:28:04,278 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) [2021-11-13 01:28:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 853 transitions. [2021-11-13 01:28:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-13 01:28:04,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:04,283 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] [2021-11-13 01:28:04,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:04,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:04,497 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash 795964079, now seen corresponding path program 1 times [2021-11-13 01:28:04,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:04,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177923198] [2021-11-13 01:28:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:04,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:04,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:04,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:04,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:28:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:05,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:28:05,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 01:28:05,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 01:28:05,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:05,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177923198] [2021-11-13 01:28:05,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177923198] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:28:05,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:28:05,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:28:05,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572314371] [2021-11-13 01:28:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:05,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:28:05,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:28:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:28:05,978 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) [2021-11-13 01:28:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:06,298 INFO L93 Difference]: Finished difference Result 1132 states and 1640 transitions. [2021-11-13 01:28:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:28:06,299 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 [2021-11-13 01:28:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:06,305 INFO L225 Difference]: With dead ends: 1132 [2021-11-13 01:28:06,306 INFO L226 Difference]: Without dead ends: 596 [2021-11-13 01:28:06,308 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 [2021-11-13 01:28:06,309 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 361 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.64ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.87ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:06,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3776 Invalid, 103 Unknown, 0 Unchecked, 10.64ms Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 183.87ms Time] [2021-11-13 01:28:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-13 01:28:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-13 01:28:06,357 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) [2021-11-13 01:28:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 858 transitions. [2021-11-13 01:28:06,363 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 858 transitions. Word has length 169 [2021-11-13 01:28:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:06,365 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 858 transitions. [2021-11-13 01:28:06,365 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) [2021-11-13 01:28:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 858 transitions. [2021-11-13 01:28:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-13 01:28:06,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:06,370 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] [2021-11-13 01:28:06,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:06,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:06,585 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash 198107206, now seen corresponding path program 1 times [2021-11-13 01:28:06,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:06,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417766409] [2021-11-13 01:28:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:06,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:06,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:06,588 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:06,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:28:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 01:28:07,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 01:28:07,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 01:28:08,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:08,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417766409] [2021-11-13 01:28:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417766409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:08,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-13 01:28:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958674344] [2021-11-13 01:28:08,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:08,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:28:08,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:28:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:28:08,178 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) [2021-11-13 01:28:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:08,635 INFO L93 Difference]: Finished difference Result 1120 states and 1626 transitions. [2021-11-13 01:28:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:28:08,636 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 [2021-11-13 01:28:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:08,642 INFO L225 Difference]: With dead ends: 1120 [2021-11-13 01:28:08,643 INFO L226 Difference]: Without dead ends: 596 [2021-11-13 01:28:08,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:28:08,648 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 357 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 8415 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.26ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:08,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 8415 Invalid, 152 Unknown, 0 Unchecked, 28.26ms Time], IncrementalHoareTripleChecker [40 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 291.51ms Time] [2021-11-13 01:28:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-13 01:28:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-13 01:28:08,692 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) [2021-11-13 01:28:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 857 transitions. [2021-11-13 01:28:08,698 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 857 transitions. Word has length 170 [2021-11-13 01:28:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:08,699 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 857 transitions. [2021-11-13 01:28:08,699 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) [2021-11-13 01:28:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 857 transitions. [2021-11-13 01:28:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-13 01:28:08,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:08,704 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] [2021-11-13 01:28:08,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 01:28:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:08,926 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2061645928, now seen corresponding path program 2 times [2021-11-13 01:28:08,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:08,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816894523] [2021-11-13 01:28:08,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:28:08,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:08,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:08,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:28:09,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:28:09,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:28:09,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-13 01:28:09,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-13 01:28:10,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:10,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816894523] [2021-11-13 01:28:10,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816894523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:10,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:10,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:10,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576127631] [2021-11-13 01:28:10,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:10,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:10,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:10,137 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) [2021-11-13 01:28:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:10,315 INFO L93 Difference]: Finished difference Result 1049 states and 1515 transitions. [2021-11-13 01:28:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:10,317 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 [2021-11-13 01:28:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:10,324 INFO L225 Difference]: With dead ends: 1049 [2021-11-13 01:28:10,324 INFO L226 Difference]: Without dead ends: 725 [2021-11-13 01:28:10,326 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 [2021-11-13 01:28:10,329 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 168 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.56ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:10,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2575 Invalid, 27 Unknown, 0 Unchecked, 7.89ms Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 94.56ms Time] [2021-11-13 01:28:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-13 01:28:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 717. [2021-11-13 01:28:10,389 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) [2021-11-13 01:28:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1057 transitions. [2021-11-13 01:28:10,397 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1057 transitions. Word has length 171 [2021-11-13 01:28:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:10,398 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 1057 transitions. [2021-11-13 01:28:10,398 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) [2021-11-13 01:28:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1057 transitions. [2021-11-13 01:28:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 01:28:10,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:10,404 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] [2021-11-13 01:28:10,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:10,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:10,621 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2130759174, now seen corresponding path program 1 times [2021-11-13 01:28:10,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:10,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497432933] [2021-11-13 01:28:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:10,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:10,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:10,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:28:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:11,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 01:28:11,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 01:28:11,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 01:28:12,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:12,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497432933] [2021-11-13 01:28:12,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497432933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:12,227 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:12,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-13 01:28:12,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544765248] [2021-11-13 01:28:12,228 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:12,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:28:12,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:28:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:28:12,230 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) [2021-11-13 01:28:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:12,597 INFO L93 Difference]: Finished difference Result 1364 states and 2029 transitions. [2021-11-13 01:28:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:28:12,599 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 [2021-11-13 01:28:12,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:12,606 INFO L225 Difference]: With dead ends: 1364 [2021-11-13 01:28:12,606 INFO L226 Difference]: Without dead ends: 719 [2021-11-13 01:28:12,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:28:12,610 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 704 mSDsluCounter, 5459 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.68ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 211.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:12,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 6297 Invalid, 173 Unknown, 0 Unchecked, 19.68ms Time], IncrementalHoareTripleChecker [82 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 211.31ms Time] [2021-11-13 01:28:12,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-13 01:28:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2021-11-13 01:28:12,672 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) [2021-11-13 01:28:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1060 transitions. [2021-11-13 01:28:12,680 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1060 transitions. Word has length 183 [2021-11-13 01:28:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:12,681 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1060 transitions. [2021-11-13 01:28:12,681 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) [2021-11-13 01:28:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1060 transitions. [2021-11-13 01:28:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-13 01:28:12,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:12,688 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] [2021-11-13 01:28:12,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:12,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:12,905 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 193860863, now seen corresponding path program 1 times [2021-11-13 01:28:12,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:12,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162382994] [2021-11-13 01:28:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:12,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:12,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:12,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:28:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:13,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:28:13,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 01:28:13,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 01:28:14,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:14,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162382994] [2021-11-13 01:28:14,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162382994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:14,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:14,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-13 01:28:14,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726116909] [2021-11-13 01:28:14,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:14,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:28:14,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:28:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:28:14,473 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) [2021-11-13 01:28:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:14,768 INFO L93 Difference]: Finished difference Result 1361 states and 2023 transitions. [2021-11-13 01:28:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:28:14,770 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 [2021-11-13 01:28:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:14,777 INFO L225 Difference]: With dead ends: 1361 [2021-11-13 01:28:14,777 INFO L226 Difference]: Without dead ends: 719 [2021-11-13 01:28:14,815 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 [2021-11-13 01:28:14,816 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 710 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.62ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.52ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:14,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3784 Invalid, 140 Unknown, 0 Unchecked, 10.62ms Time], IncrementalHoareTripleChecker [82 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 183.52ms Time] [2021-11-13 01:28:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-13 01:28:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2021-11-13 01:28:14,865 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) [2021-11-13 01:28:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1059 transitions. [2021-11-13 01:28:14,872 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1059 transitions. Word has length 184 [2021-11-13 01:28:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:14,873 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1059 transitions. [2021-11-13 01:28:14,874 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) [2021-11-13 01:28:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1059 transitions. [2021-11-13 01:28:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-13 01:28:14,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:14,880 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] [2021-11-13 01:28:14,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:15,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:15,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash 138516818, now seen corresponding path program 2 times [2021-11-13 01:28:15,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:15,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88078829] [2021-11-13 01:28:15,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:28:15,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:15,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:15,096 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:15,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:28:15,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:28:15,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:28:15,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:15,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:15,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:16,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:16,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88078829] [2021-11-13 01:28:16,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88078829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:16,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:16,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:16,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46274524] [2021-11-13 01:28:16,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:16,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:16,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:16,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:16,188 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) [2021-11-13 01:28:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:16,326 INFO L93 Difference]: Finished difference Result 1425 states and 2122 transitions. [2021-11-13 01:28:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:16,327 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 [2021-11-13 01:28:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:16,339 INFO L225 Difference]: With dead ends: 1425 [2021-11-13 01:28:16,340 INFO L226 Difference]: Without dead ends: 819 [2021-11-13 01:28:16,343 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 [2021-11-13 01:28:16,343 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 165 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.58ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:16,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1679 Invalid, 4 Unknown, 0 Unchecked, 8.44ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 17.58ms Time] [2021-11-13 01:28:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-13 01:28:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2021-11-13 01:28:16,410 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) [2021-11-13 01:28:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1207 transitions. [2021-11-13 01:28:16,428 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1207 transitions. Word has length 185 [2021-11-13 01:28:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:16,431 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1207 transitions. [2021-11-13 01:28:16,431 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) [2021-11-13 01:28:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1207 transitions. [2021-11-13 01:28:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-13 01:28:16,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:16,439 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] [2021-11-13 01:28:16,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:16,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:16,656 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 152037678, now seen corresponding path program 1 times [2021-11-13 01:28:16,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:16,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467865726] [2021-11-13 01:28:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:16,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:16,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:16,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:16,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:28:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:17,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:28:17,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 01:28:17,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 01:28:18,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:18,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467865726] [2021-11-13 01:28:18,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467865726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:18,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:18,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-13 01:28:18,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648529140] [2021-11-13 01:28:18,030 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:18,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:28:18,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:28:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:28:18,032 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) [2021-11-13 01:28:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:18,302 INFO L93 Difference]: Finished difference Result 1547 states and 2326 transitions. [2021-11-13 01:28:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:28:18,303 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 [2021-11-13 01:28:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:18,311 INFO L225 Difference]: With dead ends: 1547 [2021-11-13 01:28:18,311 INFO L226 Difference]: Without dead ends: 813 [2021-11-13 01:28:18,315 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 [2021-11-13 01:28:18,316 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 533 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.12ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:18,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 3604 Invalid, 127 Unknown, 0 Unchecked, 9.12ms Time], IncrementalHoareTripleChecker [59 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 165.72ms Time] [2021-11-13 01:28:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-13 01:28:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2021-11-13 01:28:18,376 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) [2021-11-13 01:28:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1214 transitions. [2021-11-13 01:28:18,382 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1214 transitions. Word has length 186 [2021-11-13 01:28:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:18,383 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1214 transitions. [2021-11-13 01:28:18,383 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) [2021-11-13 01:28:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1214 transitions. [2021-11-13 01:28:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-13 01:28:18,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:18,390 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] [2021-11-13 01:28:18,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:18,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:18,605 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1725193692, now seen corresponding path program 1 times [2021-11-13 01:28:18,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:18,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408262997] [2021-11-13 01:28:18,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:18,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:18,607 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:18,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:28:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:19,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:28:19,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 01:28:19,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 01:28:20,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:20,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408262997] [2021-11-13 01:28:20,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408262997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:20,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:20,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-13 01:28:20,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088828648] [2021-11-13 01:28:20,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:20,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:28:20,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:28:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:28:20,026 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) [2021-11-13 01:28:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:20,291 INFO L93 Difference]: Finished difference Result 1551 states and 2338 transitions. [2021-11-13 01:28:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:28:20,293 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 [2021-11-13 01:28:20,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:20,304 INFO L225 Difference]: With dead ends: 1551 [2021-11-13 01:28:20,304 INFO L226 Difference]: Without dead ends: 815 [2021-11-13 01:28:20,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:28:20,309 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 353 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.75ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:20,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 3784 Invalid, 99 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [43 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 164.75ms Time] [2021-11-13 01:28:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-13 01:28:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 813. [2021-11-13 01:28:20,375 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) [2021-11-13 01:28:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1214 transitions. [2021-11-13 01:28:20,382 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1214 transitions. Word has length 194 [2021-11-13 01:28:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:20,382 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1214 transitions. [2021-11-13 01:28:20,383 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) [2021-11-13 01:28:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1214 transitions. [2021-11-13 01:28:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 01:28:20,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:20,388 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] [2021-11-13 01:28:20,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:20,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:20,611 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 603602140, now seen corresponding path program 1 times [2021-11-13 01:28:20,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:20,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146189743] [2021-11-13 01:28:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:20,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:20,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:20,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:20,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:28:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:21,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:21,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:21,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:21,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:21,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146189743] [2021-11-13 01:28:21,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146189743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:21,908 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:21,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:21,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534895589] [2021-11-13 01:28:21,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:21,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:21,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:21,910 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) [2021-11-13 01:28:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:22,015 INFO L93 Difference]: Finished difference Result 1705 states and 2588 transitions. [2021-11-13 01:28:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:22,016 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 [2021-11-13 01:28:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:22,027 INFO L225 Difference]: With dead ends: 1705 [2021-11-13 01:28:22,028 INFO L226 Difference]: Without dead ends: 1016 [2021-11-13 01:28:22,033 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 [2021-11-13 01:28:22,034 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 163 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:22,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1708 Invalid, 4 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 25.32ms Time] [2021-11-13 01:28:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-11-13 01:28:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1008. [2021-11-13 01:28:22,152 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) [2021-11-13 01:28:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1535 transitions. [2021-11-13 01:28:22,159 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1535 transitions. Word has length 187 [2021-11-13 01:28:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:22,160 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1535 transitions. [2021-11-13 01:28:22,160 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) [2021-11-13 01:28:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1535 transitions. [2021-11-13 01:28:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-13 01:28:22,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:22,170 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] [2021-11-13 01:28:22,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:22,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:22,385 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 549912264, now seen corresponding path program 1 times [2021-11-13 01:28:22,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:22,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218735837] [2021-11-13 01:28:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:22,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:22,388 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:22,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 01:28:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:22,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:23,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:23,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:23,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218735837] [2021-11-13 01:28:23,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218735837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:23,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:23,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:23,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54618454] [2021-11-13 01:28:23,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:23,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:23,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:23,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:23,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:23,814 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) [2021-11-13 01:28:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:23,932 INFO L93 Difference]: Finished difference Result 2276 states and 3528 transitions. [2021-11-13 01:28:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:23,933 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 [2021-11-13 01:28:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:23,946 INFO L225 Difference]: With dead ends: 2276 [2021-11-13 01:28:23,946 INFO L226 Difference]: Without dead ends: 1400 [2021-11-13 01:28:23,950 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 [2021-11-13 01:28:23,951 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 161 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.66ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:23,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1711 Invalid, 4 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 5.66ms Time] [2021-11-13 01:28:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-13 01:28:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1392. [2021-11-13 01:28:24,066 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) [2021-11-13 01:28:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2164 transitions. [2021-11-13 01:28:24,074 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2164 transitions. Word has length 195 [2021-11-13 01:28:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:24,075 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2164 transitions. [2021-11-13 01:28:24,075 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) [2021-11-13 01:28:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2164 transitions. [2021-11-13 01:28:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-13 01:28:24,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:24,088 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] [2021-11-13 01:28:24,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:24,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:24,315 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1523715117, now seen corresponding path program 1 times [2021-11-13 01:28:24,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:24,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971689742] [2021-11-13 01:28:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:24,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:24,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:24,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:24,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:28:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:24,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:24,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:25,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:25,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:25,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971689742] [2021-11-13 01:28:25,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971689742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:25,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:25,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:25,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969284717] [2021-11-13 01:28:25,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:25,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:25,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:25,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:25,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:25,754 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) [2021-11-13 01:28:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:25,937 INFO L93 Difference]: Finished difference Result 3371 states and 5339 transitions. [2021-11-13 01:28:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:25,938 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 [2021-11-13 01:28:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:25,958 INFO L225 Difference]: With dead ends: 3371 [2021-11-13 01:28:25,959 INFO L226 Difference]: Without dead ends: 2122 [2021-11-13 01:28:25,968 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 [2021-11-13 01:28:25,969 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 159 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.61ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:25,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 28.61ms Time] [2021-11-13 01:28:25,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-13 01:28:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2114. [2021-11-13 01:28:26,218 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) [2021-11-13 01:28:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3357 transitions. [2021-11-13 01:28:26,229 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3357 transitions. Word has length 196 [2021-11-13 01:28:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 2114 states and 3357 transitions. [2021-11-13 01:28:26,241 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) [2021-11-13 01:28:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3357 transitions. [2021-11-13 01:28:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-13 01:28:26,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:26,262 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] [2021-11-13 01:28:26,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:26,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:26,477 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1946834624, now seen corresponding path program 1 times [2021-11-13 01:28:26,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:26,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982351719] [2021-11-13 01:28:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:26,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:26,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:26,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:28:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:27,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:27,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:27,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:27,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:27,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982351719] [2021-11-13 01:28:27,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982351719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:27,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:27,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:27,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317417860] [2021-11-13 01:28:27,839 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:27,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:27,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:27,841 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) [2021-11-13 01:28:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:28,141 INFO L93 Difference]: Finished difference Result 5460 states and 8806 transitions. [2021-11-13 01:28:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:28,142 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 [2021-11-13 01:28:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:28,176 INFO L225 Difference]: With dead ends: 5460 [2021-11-13 01:28:28,176 INFO L226 Difference]: Without dead ends: 3500 [2021-11-13 01:28:28,186 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 [2021-11-13 01:28:28,187 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 157 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:28,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 24.24ms Time] [2021-11-13 01:28:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-11-13 01:28:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3492. [2021-11-13 01:28:28,556 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) [2021-11-13 01:28:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5638 transitions. [2021-11-13 01:28:28,572 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5638 transitions. Word has length 197 [2021-11-13 01:28:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:28,574 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 5638 transitions. [2021-11-13 01:28:28,574 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) [2021-11-13 01:28:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5638 transitions. [2021-11-13 01:28:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 01:28:28,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:28,587 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] [2021-11-13 01:28:28,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:28,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:28,801 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:28,802 INFO L85 PathProgramCache]: Analyzing trace with hash 984162136, now seen corresponding path program 1 times [2021-11-13 01:28:28,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:28,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90782692] [2021-11-13 01:28:28,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:28,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:28,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:28,805 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:28,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 01:28:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:29,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:29,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:29,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:30,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:30,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90782692] [2021-11-13 01:28:30,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90782692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:30,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:30,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:30,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093397416] [2021-11-13 01:28:30,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:30,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:30,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:30,025 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) [2021-11-13 01:28:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:30,494 INFO L93 Difference]: Finished difference Result 9453 states and 15408 transitions. [2021-11-13 01:28:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:30,495 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 [2021-11-13 01:28:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:30,541 INFO L225 Difference]: With dead ends: 9453 [2021-11-13 01:28:30,542 INFO L226 Difference]: Without dead ends: 6126 [2021-11-13 01:28:30,555 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 [2021-11-13 01:28:30,555 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 155 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.58ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:30,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1708 Invalid, 4 Unknown, 0 Unchecked, 3.58ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 25.81ms Time] [2021-11-13 01:28:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2021-11-13 01:28:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6118. [2021-11-13 01:28:31,098 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) [2021-11-13 01:28:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 9959 transitions. [2021-11-13 01:28:31,126 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 9959 transitions. Word has length 191 [2021-11-13 01:28:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:31,127 INFO L470 AbstractCegarLoop]: Abstraction has 6118 states and 9959 transitions. [2021-11-13 01:28:31,127 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) [2021-11-13 01:28:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 9959 transitions. [2021-11-13 01:28:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-13 01:28:31,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:31,141 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] [2021-11-13 01:28:31,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:31,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:31,355 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1779124811, now seen corresponding path program 1 times [2021-11-13 01:28:31,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:31,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53915662] [2021-11-13 01:28:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:31,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:31,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:31,358 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:31,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 01:28:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:31,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:31,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:32,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:32,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:32,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53915662] [2021-11-13 01:28:32,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53915662] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:32,577 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:32,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:32,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949017476] [2021-11-13 01:28:32,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:32,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:32,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:32,579 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) [2021-11-13 01:28:33,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:33,158 INFO L93 Difference]: Finished difference Result 17257 states and 28328 transitions. [2021-11-13 01:28:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:33,159 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 [2021-11-13 01:28:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:33,215 INFO L225 Difference]: With dead ends: 17257 [2021-11-13 01:28:33,215 INFO L226 Difference]: Without dead ends: 11312 [2021-11-13 01:28:33,235 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 [2021-11-13 01:28:33,236 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 153 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:33,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.90ms Time] [2021-11-13 01:28:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-11-13 01:28:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11304. [2021-11-13 01:28:34,135 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) [2021-11-13 01:28:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 18536 transitions. [2021-11-13 01:28:34,175 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 18536 transitions. Word has length 199 [2021-11-13 01:28:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:34,175 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 18536 transitions. [2021-11-13 01:28:34,176 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) [2021-11-13 01:28:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 18536 transitions. [2021-11-13 01:28:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-13 01:28:34,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:34,195 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] [2021-11-13 01:28:34,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:34,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:34,418 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:34,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1793027632, now seen corresponding path program 1 times [2021-11-13 01:28:34,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:34,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346518766] [2021-11-13 01:28:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:34,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:34,420 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:34,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 01:28:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:34,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:34,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:35,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:35,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:35,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346518766] [2021-11-13 01:28:35,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346518766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:35,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:35,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:35,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208159932] [2021-11-13 01:28:35,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:35,615 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) [2021-11-13 01:28:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:36,815 INFO L93 Difference]: Finished difference Result 22401 states and 36772 transitions. [2021-11-13 01:28:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:36,816 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 [2021-11-13 01:28:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:36,865 INFO L225 Difference]: With dead ends: 22401 [2021-11-13 01:28:36,865 INFO L226 Difference]: Without dead ends: 11312 [2021-11-13 01:28:36,901 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 [2021-11-13 01:28:36,903 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 302 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.52ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:36,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1889 Invalid, 21 Unknown, 0 Unchecked, 4.52ms Time], IncrementalHoareTripleChecker [18 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 74.86ms Time] [2021-11-13 01:28:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-11-13 01:28:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11304. [2021-11-13 01:28:37,762 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) [2021-11-13 01:28:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 18472 transitions. [2021-11-13 01:28:37,803 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 18472 transitions. Word has length 199 [2021-11-13 01:28:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:37,803 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 18472 transitions. [2021-11-13 01:28:37,804 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) [2021-11-13 01:28:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 18472 transitions. [2021-11-13 01:28:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 01:28:37,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:37,825 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] [2021-11-13 01:28:37,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:38,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:38,047 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash -612978825, now seen corresponding path program 1 times [2021-11-13 01:28:38,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:38,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570454045] [2021-11-13 01:28:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:38,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:38,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:38,050 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:38,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 01:28:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:38,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:38,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:39,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:39,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:39,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570454045] [2021-11-13 01:28:39,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570454045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:39,576 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:39,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:39,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239807834] [2021-11-13 01:28:39,576 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:39,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:39,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:39,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:39,578 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) [2021-11-13 01:28:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:40,837 INFO L93 Difference]: Finished difference Result 30421 states and 49409 transitions. [2021-11-13 01:28:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:40,838 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 [2021-11-13 01:28:40,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:40,925 INFO L225 Difference]: With dead ends: 30421 [2021-11-13 01:28:40,926 INFO L226 Difference]: Without dead ends: 19314 [2021-11-13 01:28:40,954 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 [2021-11-13 01:28:40,955 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 151 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:40,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1693 Invalid, 4 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 19.47ms Time] [2021-11-13 01:28:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19314 states. [2021-11-13 01:28:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19314 to 19306. [2021-11-13 01:28:42,197 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) [2021-11-13 01:28:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 31081 transitions. [2021-11-13 01:28:42,292 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 31081 transitions. Word has length 200 [2021-11-13 01:28:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:42,293 INFO L470 AbstractCegarLoop]: Abstraction has 19306 states and 31081 transitions. [2021-11-13 01:28:42,293 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) [2021-11-13 01:28:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 31081 transitions. [2021-11-13 01:28:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-13 01:28:42,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:42,319 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] [2021-11-13 01:28:42,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:42,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:42,540 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash 166441101, now seen corresponding path program 1 times [2021-11-13 01:28:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:42,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34181500] [2021-11-13 01:28:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:42,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:42,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:42,544 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:42,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 01:28:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:43,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:43,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:43,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:44,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:44,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34181500] [2021-11-13 01:28:44,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34181500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:44,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:44,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:44,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170958405] [2021-11-13 01:28:44,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:44,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:44,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:44,106 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) [2021-11-13 01:28:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:46,559 INFO L93 Difference]: Finished difference Result 56082 states and 90554 transitions. [2021-11-13 01:28:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:46,560 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 [2021-11-13 01:28:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:46,733 INFO L225 Difference]: With dead ends: 56082 [2021-11-13 01:28:46,733 INFO L226 Difference]: Without dead ends: 36980 [2021-11-13 01:28:46,785 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 [2021-11-13 01:28:46,786 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 149 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:46,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.73ms Time] [2021-11-13 01:28:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36980 states. [2021-11-13 01:28:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36980 to 36972. [2021-11-13 01:28:49,484 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) [2021-11-13 01:28:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36972 states to 36972 states and 59498 transitions. [2021-11-13 01:28:49,608 INFO L78 Accepts]: Start accepts. Automaton has 36972 states and 59498 transitions. Word has length 201 [2021-11-13 01:28:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:49,609 INFO L470 AbstractCegarLoop]: Abstraction has 36972 states and 59498 transitions. [2021-11-13 01:28:49,609 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) [2021-11-13 01:28:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 36972 states and 59498 transitions. [2021-11-13 01:28:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-13 01:28:49,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:49,636 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] [2021-11-13 01:28:49,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:49,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:49,858 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash -658326382, now seen corresponding path program 1 times [2021-11-13 01:28:49,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:49,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520144219] [2021-11-13 01:28:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:49,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:49,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:49,861 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:49,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 01:28:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:50,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:50,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:50,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:28:50,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:50,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520144219] [2021-11-13 01:28:50,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520144219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:50,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:50,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:50,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015894270] [2021-11-13 01:28:50,979 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:50,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:50,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:50,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:50,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:50,981 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) [2021-11-13 01:28:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:54,868 INFO L93 Difference]: Finished difference Result 107534 states and 173746 transitions. [2021-11-13 01:28:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:54,869 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 [2021-11-13 01:28:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:55,221 INFO L225 Difference]: With dead ends: 107534 [2021-11-13 01:28:55,221 INFO L226 Difference]: Without dead ends: 70774 [2021-11-13 01:28:55,320 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 [2021-11-13 01:28:55,321 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 147 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:55,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1706 Invalid, 4 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 5.42ms Time] [2021-11-13 01:28:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70774 states. [2021-11-13 01:29:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70774 to 70766. [2021-11-13 01:29:00,636 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) [2021-11-13 01:29:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70766 states to 70766 states and 114027 transitions. [2021-11-13 01:29:00,860 INFO L78 Accepts]: Start accepts. Automaton has 70766 states and 114027 transitions. Word has length 195 [2021-11-13 01:29:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:00,861 INFO L470 AbstractCegarLoop]: Abstraction has 70766 states and 114027 transitions. [2021-11-13 01:29:00,861 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) [2021-11-13 01:29:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 70766 states and 114027 transitions. [2021-11-13 01:29:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-13 01:29:00,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:00,891 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] [2021-11-13 01:29:00,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:01,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:01,105 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:01,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1754430279, now seen corresponding path program 1 times [2021-11-13 01:29:01,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:01,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473506454] [2021-11-13 01:29:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:01,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:01,107 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:01,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd4cbd6-ecf0-480e-a6d6-59c7b9fd6993/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 01:29:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:01,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:29:01,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:29:01,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:29:02,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:02,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473506454] [2021-11-13 01:29:02,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473506454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:02,527 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:02,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:29:02,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453227602] [2021-11-13 01:29:02,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:02,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:29:02,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:29:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:29:02,529 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) [2021-11-13 01:29:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:10,183 INFO L93 Difference]: Finished difference Result 137142 states and 221486 transitions. [2021-11-13 01:29:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:29:10,184 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 [2021-11-13 01:29:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:10,739 INFO L225 Difference]: With dead ends: 137142 [2021-11-13 01:29:10,739 INFO L226 Difference]: Without dead ends: 136818 [2021-11-13 01:29:10,793 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 [2021-11-13 01:29:10,794 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 145 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:10,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.10ms Time] [2021-11-13 01:29:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136818 states.