./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_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_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/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_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/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_227e716f-4fed-4808-b0d1-dacb1bb433e3/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:27,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:27,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:27,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:27,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:27,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:27,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:27,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:27,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:27,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:27,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:27,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:27,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:27,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:27,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:27,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:27,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:27,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:27,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:27,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:27,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:27,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:27,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:27,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:27,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:27,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:27,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:27,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:27,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:27,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:27,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:27,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:27,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:27,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:27,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:27,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:27,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:27,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:27,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:27,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:27,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:27,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:41:27,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:27,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:27,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:27,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:27,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:27,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:27,170 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:27,170 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:41:27,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:27,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:27,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:41:27,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:41:27,171 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:27,171 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:41:27,171 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:41:27,171 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:41:27,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:27,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:41:27,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:41:27,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:41:27,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:27,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:27,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:27,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:27,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:27,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:41:27,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:27,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:27,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:27,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:27,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:27,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:27,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:27,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:27,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:27,176 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:41:27,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:41:27,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:27,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:27,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:27,177 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-12 22:41:27,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:27,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:27,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:27,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:27,460 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:27,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-12 22:41:27,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/b64d43a8a/483b65ea349c4f8aac27cb493fc33bcd/FLAGdfdddc235 [2021-11-12 22:41:28,141 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:28,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-12 22:41:28,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/b64d43a8a/483b65ea349c4f8aac27cb493fc33bcd/FLAGdfdddc235 [2021-11-12 22:41:28,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/b64d43a8a/483b65ea349c4f8aac27cb493fc33bcd [2021-11-12 22:41:28,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:28,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:28,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:28,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:28,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:28,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:28" (1/1) ... [2021-11-12 22:41:28,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147c631d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:28, skipping insertion in model container [2021-11-12 22:41:28,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:28" (1/1) ... [2021-11-12 22:41:28,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:28,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:29,135 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-12 22:41:29,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:29,167 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) [2021-11-12 22:41:29,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b6bbacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:29, skipping insertion in model container [2021-11-12 22:41:29,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:29,168 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:41:29,171 INFO L158 Benchmark]: Toolchain (without parser) took 769.93ms. Allocated memory is still 109.1MB. Free memory was 87.5MB in the beginning and 69.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-12 22:41:29,173 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 79.7MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:41:29,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 767.54ms. Allocated memory is still 109.1MB. Free memory was 87.5MB in the beginning and 69.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-12 22:41:29,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 79.7MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 767.54ms. Allocated memory is still 109.1MB. Free memory was 87.5MB in the beginning and 69.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3118]: 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/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_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/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_227e716f-4fed-4808-b0d1-dacb1bb433e3/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:31,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:31,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:31,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:31,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:31,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:31,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:31,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:31,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:31,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:31,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:31,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:31,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:31,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:31,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:31,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:31,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:31,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:31,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:31,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:31,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:31,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:31,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:31,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:31,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:31,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:31,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:31,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:31,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:31,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:31,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:31,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:31,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:31,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:31,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:31,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:31,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:31,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:31,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:31,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:31,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:31,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:41:31,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:31,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:31,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:31,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:31,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:31,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:31,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:31,572 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:31,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:31,573 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:31,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:31,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:41:31,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:41:31,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:31,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:31,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:31,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:31,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:31,575 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:41:31,575 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:41:31,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:41:31,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:31,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:31,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:31,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:31,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:41:31,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:31,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:31,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:31,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:31,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:31,578 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:41:31,578 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:31,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:31,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:31,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:31,579 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-12 22:41:31,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:31,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:31,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:31,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:31,993 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:31,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-12 22:41:32,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/9bdb6a4cb/a8461f02a25d44e18bf83a6f93342a1b/FLAG3ba5c6bc1 [2021-11-12 22:41:32,764 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:32,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-12 22:41:32,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/9bdb6a4cb/a8461f02a25d44e18bf83a6f93342a1b/FLAG3ba5c6bc1 [2021-11-12 22:41:33,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/data/9bdb6a4cb/a8461f02a25d44e18bf83a6f93342a1b [2021-11-12 22:41:33,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:33,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:33,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:33,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:33,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:33,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:33" (1/1) ... [2021-11-12 22:41:33,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5cb161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:33, skipping insertion in model container [2021-11-12 22:41:33,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:33" (1/1) ... [2021-11-12 22:41:33,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:33,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:33,904 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-12 22:41:33,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:33,928 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:41:33,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:34,085 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-12 22:41:34,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:34,091 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:41:34,229 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_227e716f-4fed-4808-b0d1-dacb1bb433e3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-12 22:41:34,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:34,273 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:41:34,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34 WrapperNode [2021-11-12 22:41:34,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:34,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:34,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:41:34,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:41:34,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:34,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:41:34,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:41:34,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:41:34,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:41:34,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:41:34,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:41:34,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:41:34,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (1/1) ... [2021-11-12 22:41:34,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:34,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:34,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:41:34,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:41:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-12 22:41:34,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-12 22:41:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-12 22:41:34,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-12 22:41:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-12 22:41:34,653 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-12 22:41:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-12 22:41:34,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-12 22:41:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-12 22:41:34,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-12 22:41:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-12 22:41:34,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-12 22:41:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-12 22:41:34,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-12 22:41:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-12 22:41:34,655 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-12 22:41:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-12 22:41:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-12 22:41:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-12 22:41:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-12 22:41:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-12 22:41:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-12 22:41:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-12 22:41:34,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-12 22:41:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-12 22:41:34,657 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-12 22:41:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-12 22:41:34,657 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-12 22:41:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-12 22:41:34,658 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-12 22:41:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-12 22:41:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-12 22:41:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-12 22:41:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-12 22:41:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-12 22:41:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-12 22:41:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-12 22:41:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-12 22:41:34,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-12 22:41:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-12 22:41:34,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-12 22:41:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-12 22:41:34,661 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-12 22:41:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-12 22:41:34,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-12 22:41:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-12 22:41:34,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-12 22:41:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-12 22:41:34,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-12 22:41:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-12 22:41:34,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-12 22:41:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:41:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-12 22:41:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-12 22:41:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-12 22:41:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-12 22:41:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-12 22:41:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-12 22:41:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-12 22:41:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-12 22:41:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-12 22:41:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-12 22:41:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-12 22:41:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-12 22:41:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-12 22:41:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-12 22:41:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:41:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-12 22:41:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-12 22:41:34,668 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-12 22:41:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-12 22:41:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-12 22:41:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-12 22:41:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-12 22:41:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-12 22:41:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-12 22:41:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-12 22:41:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-12 22:41:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-12 22:41:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-12 22:41:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-12 22:41:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-12 22:41:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-12 22:41:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-12 22:41:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-12 22:41:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-12 22:41:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-12 22:41:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-12 22:41:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-12 22:41:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:41:34,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:41:38,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:41:38,700 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:41:38,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:41:38 BoogieIcfgContainer [2021-11-12 22:41:38,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:41:38,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:41:38,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:41:38,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:41:38,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:41:33" (1/3) ... [2021-11-12 22:41:38,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d32345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:41:38, skipping insertion in model container [2021-11-12 22:41:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34" (2/3) ... [2021-11-12 22:41:38,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d32345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:41:38, skipping insertion in model container [2021-11-12 22:41:38,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:41:38" (3/3) ... [2021-11-12 22:41:38,711 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2021-11-12 22:41:38,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:41:38,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:41:38,782 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:41:38,788 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 [2021-11-12 22:41:38,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:41:38,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-12 22:41:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-12 22:41:38,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:38,848 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] [2021-11-12 22:41:38,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash -78162442, now seen corresponding path program 1 times [2021-11-12 22:41:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:38,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329041244] [2021-11-12 22:41:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:38,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:38,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:38,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:41:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:39,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:41:39,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:39,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:40,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:40,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329041244] [2021-11-12 22:41:40,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329041244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:40,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:40,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:41:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268674722] [2021-11-12 22:41:40,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:40,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:41:40,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:41:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:41:40,309 INFO L87 Difference]: Start difference. First operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:41:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:40,408 INFO L93 Difference]: Finished difference Result 931 states and 1369 transitions. [2021-11-12 22:41:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:41:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2021-11-12 22:41:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:40,438 INFO L225 Difference]: With dead ends: 931 [2021-11-12 22:41:40,438 INFO L226 Difference]: Without dead ends: 593 [2021-11-12 22:41:40,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:41:40,462 INFO L933 BasicCegarLoop]: 890 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, 890 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:40,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 7.53ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:41:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-12 22:41:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-11-12 22:41:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.5113636363636365) internal successors, (665), 459 states have internal predecessors, (665), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-12 22:41:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 882 transitions. [2021-11-12 22:41:40,603 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 882 transitions. Word has length 141 [2021-11-12 22:41:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:40,605 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 882 transitions. [2021-11-12 22:41:40,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:41:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 882 transitions. [2021-11-12 22:41:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-12 22:41:40,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:40,621 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] [2021-11-12 22:41:40,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:40,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:40,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1452679930, now seen corresponding path program 1 times [2021-11-12 22:41:40,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:40,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607630513] [2021-11-12 22:41:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:40,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:40,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:40,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:40,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:41:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:41,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:41:41,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:41,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:42,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:42,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607630513] [2021-11-12 22:41:42,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607630513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:42,007 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:42,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:41:42,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850351858] [2021-11-12 22:41:42,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:42,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:42,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:42,020 INFO L87 Difference]: Start difference. First operand 593 states and 882 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:41:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:42,168 INFO L93 Difference]: Finished difference Result 1150 states and 1708 transitions. [2021-11-12 22:41:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:42,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 142 [2021-11-12 22:41:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:42,180 INFO L225 Difference]: With dead ends: 1150 [2021-11-12 22:41:42,180 INFO L226 Difference]: Without dead ends: 593 [2021-11-12 22:41:42,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:42,185 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 3 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.81ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:42,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3509 Invalid, 18 Unknown, 0 Unchecked, 27.81ms Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.86ms Time] [2021-11-12 22:41:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-12 22:41:42,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-11-12 22:41:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.4954545454545454) internal successors, (658), 459 states have internal predecessors, (658), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-12 22:41:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2021-11-12 22:41:42,246 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 142 [2021-11-12 22:41:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:42,247 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2021-11-12 22:41:42,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:41:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2021-11-12 22:41:42,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-12 22:41:42,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:42,254 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:42,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:42,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:42,455 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2113763488, now seen corresponding path program 1 times [2021-11-12 22:41:42,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:42,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234937781] [2021-11-12 22:41:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:42,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:42,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:42,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:42,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:41:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:42,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:42,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 22:41:43,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:43,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:43,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234937781] [2021-11-12 22:41:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234937781] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:43,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:43,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:41:43,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632138056] [2021-11-12 22:41:43,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:43,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:41:43,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:41:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:43,674 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-12 22:41:45,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:46,130 INFO L93 Difference]: Finished difference Result 1154 states and 1716 transitions. [2021-11-12 22:41:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 154 [2021-11-12 22:41:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:46,143 INFO L225 Difference]: With dead ends: 1154 [2021-11-12 22:41:46,144 INFO L226 Difference]: Without dead ends: 594 [2021-11-12 22:41:46,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:46,150 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 1473 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2303.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.39ms SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2377.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:46,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 890 Invalid, 205 Unknown, 0 Unchecked, 9.39ms Time], IncrementalHoareTripleChecker [200 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2377.81ms Time] [2021-11-12 22:41:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-12 22:41:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-12 22:41:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 442 states have (on average 1.4864253393665159) internal successors, (657), 459 states have internal predecessors, (657), 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) [2021-11-12 22:41:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 870 transitions. [2021-11-12 22:41:46,199 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 870 transitions. Word has length 154 [2021-11-12 22:41:46,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:46,199 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 870 transitions. [2021-11-12 22:41:46,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-12 22:41:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 870 transitions. [2021-11-12 22:41:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-12 22:41:46,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:46,203 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] [2021-11-12 22:41:46,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:46,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:46,417 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1201992432, now seen corresponding path program 1 times [2021-11-12 22:41:46,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:46,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766022990] [2021-11-12 22:41:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:46,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:46,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:46,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:46,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:41:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:46,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:46,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:47,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:47,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:47,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766022990] [2021-11-12 22:41:47,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766022990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:47,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:47,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:41:47,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928561726] [2021-11-12 22:41:47,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:47,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:47,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:47,559 INFO L87 Difference]: Start difference. First operand 594 states and 870 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:41:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:47,708 INFO L93 Difference]: Finished difference Result 1694 states and 2517 transitions. [2021-11-12 22:41:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:47,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 148 [2021-11-12 22:41:47,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:47,718 INFO L225 Difference]: With dead ends: 1694 [2021-11-12 22:41:47,718 INFO L226 Difference]: Without dead ends: 1134 [2021-11-12 22:41:47,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:47,722 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 826 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.31ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:47,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1810 Invalid, 14 Unknown, 0 Unchecked, 7.31ms Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 63.28ms Time] [2021-11-12 22:41:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-12 22:41:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1132. [2021-11-12 22:41:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 845 states have (on average 1.493491124260355) internal successors, (1262), 875 states have internal predecessors, (1262), 199 states have call successors, (199), 87 states have call predecessors, (199), 87 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2021-11-12 22:41:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1671 transitions. [2021-11-12 22:41:47,793 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1671 transitions. Word has length 148 [2021-11-12 22:41:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:47,794 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1671 transitions. [2021-11-12 22:41:47,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:41:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1671 transitions. [2021-11-12 22:41:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-12 22:41:47,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:47,800 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:47,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:48,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:48,013 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:48,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1923519357, now seen corresponding path program 1 times [2021-11-12 22:41:48,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:48,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943169335] [2021-11-12 22:41:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:48,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:48,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:48,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:41:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:48,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:48,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-12 22:41:48,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:41:49,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:49,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943169335] [2021-11-12 22:41:49,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943169335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:49,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:49,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:41:49,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696940743] [2021-11-12 22:41:49,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:49,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:49,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:49,305 INFO L87 Difference]: Start difference. First operand 1132 states and 1671 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-12 22:41:51,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:51,405 INFO L93 Difference]: Finished difference Result 1134 states and 1672 transitions. [2021-11-12 22:41:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 156 [2021-11-12 22:41:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:51,411 INFO L225 Difference]: With dead ends: 1134 [2021-11-12 22:41:51,411 INFO L226 Difference]: Without dead ends: 595 [2021-11-12 22:41:51,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:51,414 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 766 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2040.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2053.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:51,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 893 Invalid, 8 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2053.82ms Time] [2021-11-12 22:41:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-12 22:41:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2021-11-12 22:41:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 444 states have (on average 1.4752252252252251) internal successors, (655), 459 states have internal predecessors, (655), 105 states have call successors, (105), 45 states have call predecessors, (105), 45 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-12 22:41:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 864 transitions. [2021-11-12 22:41:51,451 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 864 transitions. Word has length 156 [2021-11-12 22:41:51,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:51,451 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 864 transitions. [2021-11-12 22:41:51,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-12 22:41:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 864 transitions. [2021-11-12 22:41:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-12 22:41:51,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:51,456 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:51,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:51,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:51,669 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:51,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1342249904, now seen corresponding path program 1 times [2021-11-12 22:41:51,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:51,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775158734] [2021-11-12 22:41:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:51,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:51,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:51,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:41:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:52,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:52,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-12 22:41:52,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-12 22:41:52,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:52,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775158734] [2021-11-12 22:41:52,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775158734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:52,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:52,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:41:52,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978644346] [2021-11-12 22:41:52,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:52,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:52,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:52,839 INFO L87 Difference]: Start difference. First operand 595 states and 864 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-12 22:41:54,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:54,969 INFO L93 Difference]: Finished difference Result 1144 states and 1668 transitions. [2021-11-12 22:41:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:54,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 165 [2021-11-12 22:41:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:54,974 INFO L225 Difference]: With dead ends: 1144 [2021-11-12 22:41:54,975 INFO L226 Difference]: Without dead ends: 598 [2021-11-12 22:41:54,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:54,978 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 799 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2058.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2074.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:54,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 878 Invalid, 25 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2074.17ms Time] [2021-11-12 22:41:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-12 22:41:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 592. [2021-11-12 22:41:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 444 states have (on average 1.4504504504504505) internal successors, (644), 454 states have internal predecessors, (644), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-12 22:41:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 847 transitions. [2021-11-12 22:41:55,016 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 847 transitions. Word has length 165 [2021-11-12 22:41:55,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:55,016 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 847 transitions. [2021-11-12 22:41:55,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-12 22:41:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 847 transitions. [2021-11-12 22:41:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-12 22:41:55,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:55,021 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:55,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:55,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:55,240 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1134982874, now seen corresponding path program 1 times [2021-11-12 22:41:55,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:55,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316020392] [2021-11-12 22:41:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:55,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:55,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:55,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:55,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:41:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:55,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:41:55,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-12 22:41:56,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-12 22:41:56,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:56,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316020392] [2021-11-12 22:41:56,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316020392] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:56,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:41:56,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-12 22:41:56,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347561175] [2021-11-12 22:41:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:56,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:41:56,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:41:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:41:56,709 INFO L87 Difference]: Start difference. First operand 592 states and 847 transitions. Second operand has 8 states, 6 states have (on average 17.333333333333332) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-12 22:41:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:56,961 INFO L93 Difference]: Finished difference Result 1128 states and 1629 transitions. [2021-11-12 22:41:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:41:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 17.333333333333332) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 183 [2021-11-12 22:41:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:56,968 INFO L225 Difference]: With dead ends: 1128 [2021-11-12 22:41:56,968 INFO L226 Difference]: Without dead ends: 594 [2021-11-12 22:41:56,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:41:56,972 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 363 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.08ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:56,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5415 Invalid, 119 Unknown, 0 Unchecked, 12.08ms Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 147.11ms Time] [2021-11-12 22:41:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-12 22:41:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-12 22:41:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 445 states have (on average 1.449438202247191) internal successors, (645), 456 states have internal predecessors, (645), 102 states have call successors, (102), 45 states have call predecessors, (102), 46 states have return successors, (103), 100 states have call predecessors, (103), 101 states have call successors, (103) [2021-11-12 22:41:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 850 transitions. [2021-11-12 22:41:57,014 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 850 transitions. Word has length 183 [2021-11-12 22:41:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:57,015 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 850 transitions. [2021-11-12 22:41:57,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 17.333333333333332) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-12 22:41:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 850 transitions. [2021-11-12 22:41:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-12 22:41:57,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:57,020 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:57,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:57,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:57,238 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:57,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash 580115698, now seen corresponding path program 1 times [2021-11-12 22:41:57,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:57,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283357861] [2021-11-12 22:41:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:57,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:57,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:57,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:41:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:57,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:41:57,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-12 22:41:58,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-12 22:41:58,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:58,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283357861] [2021-11-12 22:41:58,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283357861] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:58,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:41:58,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:41:58,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305092761] [2021-11-12 22:41:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:58,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:41:58,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:41:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:41:58,552 INFO L87 Difference]: Start difference. First operand 594 states and 850 transitions. Second operand has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 22:41:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:58,775 INFO L93 Difference]: Finished difference Result 1129 states and 1632 transitions. [2021-11-12 22:41:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:41:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 184 [2021-11-12 22:41:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:58,781 INFO L225 Difference]: With dead ends: 1129 [2021-11-12 22:41:58,782 INFO L226 Difference]: Without dead ends: 596 [2021-11-12 22:41:58,784 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 [2021-11-12 22:41:58,785 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 361 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.85ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 145.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:58,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3751 Invalid, 103 Unknown, 0 Unchecked, 7.85ms Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 145.79ms Time] [2021-11-12 22:41:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-12 22:41:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-12 22:41:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4484304932735426) internal successors, (646), 458 states have internal predecessors, (646), 102 states have call successors, (102), 45 states have call predecessors, (102), 47 states have return successors, (107), 100 states have call predecessors, (107), 101 states have call successors, (107) [2021-11-12 22:41:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 855 transitions. [2021-11-12 22:41:58,824 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 855 transitions. Word has length 184 [2021-11-12 22:41:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:58,824 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 855 transitions. [2021-11-12 22:41:58,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 22:41:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 855 transitions. [2021-11-12 22:41:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 22:41:58,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:58,829 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] [2021-11-12 22:41:58,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:59,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:59,046 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1508008804, now seen corresponding path program 1 times [2021-11-12 22:41:59,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:59,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951724693] [2021-11-12 22:41:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:59,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:59,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:59,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:59,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:41:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:59,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:41:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-12 22:41:59,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-12 22:42:00,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:00,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951724693] [2021-11-12 22:42:00,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951724693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:00,296 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:00,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-12 22:42:00,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017322732] [2021-11-12 22:42:00,297 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:00,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:42:00,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:42:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:00,299 INFO L87 Difference]: Start difference. First operand 596 states and 855 transitions. Second operand has 12 states, 8 states have (on average 15.75) internal successors, (126), 12 states have internal predecessors, (126), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-12 22:42:00,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:00,546 INFO L93 Difference]: Finished difference Result 1117 states and 1618 transitions. [2021-11-12 22:42:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:42:00,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 15.75) internal successors, (126), 12 states have internal predecessors, (126), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) Word has length 178 [2021-11-12 22:42:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:00,552 INFO L225 Difference]: With dead ends: 1117 [2021-11-12 22:42:00,552 INFO L226 Difference]: Without dead ends: 596 [2021-11-12 22:42:00,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:42:00,557 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 367 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 5875 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.36ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:00,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 5875 Invalid, 124 Unknown, 0 Unchecked, 11.36ms Time], IncrementalHoareTripleChecker [42 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 142.14ms Time] [2021-11-12 22:42:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-12 22:42:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-12 22:42:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4484304932735426) internal successors, (646), 458 states have internal predecessors, (646), 102 states have call successors, (102), 45 states have call predecessors, (102), 47 states have return successors, (106), 100 states have call predecessors, (106), 101 states have call successors, (106) [2021-11-12 22:42:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 854 transitions. [2021-11-12 22:42:00,607 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 854 transitions. Word has length 178 [2021-11-12 22:42:00,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:00,608 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 854 transitions. [2021-11-12 22:42:00,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 15.75) internal successors, (126), 12 states have internal predecessors, (126), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-12 22:42:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 854 transitions. [2021-11-12 22:42:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-12 22:42:00,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:00,613 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] [2021-11-12 22:42:00,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:00,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:00,835 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:00,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1481477928, now seen corresponding path program 2 times [2021-11-12 22:42:00,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:00,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709421239] [2021-11-12 22:42:00,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:42:00,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:00,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:00,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:00,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:42:01,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:42:01,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:01,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:42:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-12 22:42:01,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-12 22:42:02,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:02,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709421239] [2021-11-12 22:42:02,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709421239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:02,005 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:02,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 22:42:02,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728307716] [2021-11-12 22:42:02,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:02,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:42:02,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:42:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:02,007 INFO L87 Difference]: Start difference. First operand 596 states and 854 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 8 states have internal predecessors, (103), 1 states have call successors, (30), 1 states have call predecessors, (30), 5 states have return successors, (26), 5 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-12 22:42:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:02,110 INFO L93 Difference]: Finished difference Result 627 states and 902 transitions. [2021-11-12 22:42:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:42:02,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 8 states have internal predecessors, (103), 1 states have call successors, (30), 1 states have call predecessors, (30), 5 states have return successors, (26), 5 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2021-11-12 22:42:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:02,117 INFO L225 Difference]: With dead ends: 627 [2021-11-12 22:42:02,117 INFO L226 Difference]: Without dead ends: 625 [2021-11-12 22:42:02,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:02,119 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 47 mSDsluCounter, 6853 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 7721 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:02,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 7721 Invalid, 39 Unknown, 0 Unchecked, 12.86ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 42.58ms Time] [2021-11-12 22:42:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-12 22:42:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 600. [2021-11-12 22:42:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 449 states have (on average 1.44543429844098) internal successors, (649), 461 states have internal predecessors, (649), 102 states have call successors, (102), 45 states have call predecessors, (102), 48 states have return successors, (109), 101 states have call predecessors, (109), 101 states have call successors, (109) [2021-11-12 22:42:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 860 transitions. [2021-11-12 22:42:02,161 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 860 transitions. Word has length 179 [2021-11-12 22:42:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:02,161 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 860 transitions. [2021-11-12 22:42:02,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 8 states have internal predecessors, (103), 1 states have call successors, (30), 1 states have call predecessors, (30), 5 states have return successors, (26), 5 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-12 22:42:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 860 transitions. [2021-11-12 22:42:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 22:42:02,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:02,166 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] [2021-11-12 22:42:02,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:02,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:02,383 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:02,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1647991423, now seen corresponding path program 1 times [2021-11-12 22:42:02,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:02,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508914798] [2021-11-12 22:42:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:02,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:02,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:02,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:02,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:42:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:02,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:42:02,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-12 22:42:03,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-12 22:42:03,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:03,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508914798] [2021-11-12 22:42:03,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508914798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:03,736 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:03,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-12 22:42:03,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256858904] [2021-11-12 22:42:03,737 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:03,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:42:03,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:42:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:03,739 INFO L87 Difference]: Start difference. First operand 600 states and 860 transitions. Second operand has 12 states, 8 states have (on average 16.75) internal successors, (134), 12 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-12 22:42:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:04,022 INFO L93 Difference]: Finished difference Result 1127 states and 1633 transitions. [2021-11-12 22:42:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:42:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 16.75) internal successors, (134), 12 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) Word has length 182 [2021-11-12 22:42:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:04,028 INFO L225 Difference]: With dead ends: 1127 [2021-11-12 22:42:04,029 INFO L226 Difference]: Without dead ends: 602 [2021-11-12 22:42:04,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:42:04,032 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 535 mSDsluCounter, 5241 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 6074 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.61ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:04,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 6074 Invalid, 155 Unknown, 0 Unchecked, 12.61ms Time], IncrementalHoareTripleChecker [60 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 178.57ms Time] [2021-11-12 22:42:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-12 22:42:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-12 22:42:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 450 states have (on average 1.4444444444444444) internal successors, (650), 463 states have internal predecessors, (650), 102 states have call successors, (102), 45 states have call predecessors, (102), 49 states have return successors, (111), 101 states have call predecessors, (111), 101 states have call successors, (111) [2021-11-12 22:42:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 863 transitions. [2021-11-12 22:42:04,068 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 863 transitions. Word has length 182 [2021-11-12 22:42:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:04,068 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 863 transitions. [2021-11-12 22:42:04,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 16.75) internal successors, (134), 12 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-12 22:42:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 863 transitions. [2021-11-12 22:42:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-12 22:42:04,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:04,074 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] [2021-11-12 22:42:04,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:04,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:04,291 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1070379730, now seen corresponding path program 1 times [2021-11-12 22:42:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:04,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964115723] [2021-11-12 22:42:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:04,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:04,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:04,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:42:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:04,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:42:04,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-12 22:42:05,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-12 22:42:05,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:05,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964115723] [2021-11-12 22:42:05,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964115723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:05,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:05,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-12 22:42:05,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804350606] [2021-11-12 22:42:05,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:05,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:42:05,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:42:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:42:05,384 INFO L87 Difference]: Start difference. First operand 602 states and 863 transitions. Second operand has 9 states, 7 states have (on average 18.571428571428573) internal successors, (130), 9 states have internal predecessors, (130), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 22:42:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:05,629 INFO L93 Difference]: Finished difference Result 1124 states and 1627 transitions. [2021-11-12 22:42:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:42:05,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 18.571428571428573) internal successors, (130), 9 states have internal predecessors, (130), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 183 [2021-11-12 22:42:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:05,635 INFO L225 Difference]: With dead ends: 1124 [2021-11-12 22:42:05,635 INFO L226 Difference]: Without dead ends: 602 [2021-11-12 22:42:05,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:42:05,638 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 355 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 5862 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:05,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 5862 Invalid, 128 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 169.46ms Time] [2021-11-12 22:42:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-12 22:42:05,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-12 22:42:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 450 states have (on average 1.4444444444444444) internal successors, (650), 463 states have internal predecessors, (650), 102 states have call successors, (102), 45 states have call predecessors, (102), 49 states have return successors, (110), 101 states have call predecessors, (110), 101 states have call successors, (110) [2021-11-12 22:42:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 862 transitions. [2021-11-12 22:42:05,695 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 862 transitions. Word has length 183 [2021-11-12 22:42:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:05,697 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 862 transitions. [2021-11-12 22:42:05,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 18.571428571428573) internal successors, (130), 9 states have internal predecessors, (130), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 22:42:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 862 transitions. [2021-11-12 22:42:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-12 22:42:05,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:05,702 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] [2021-11-12 22:42:05,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:05,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:05,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash -718561021, now seen corresponding path program 2 times [2021-11-12 22:42:05,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:05,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063455300] [2021-11-12 22:42:05,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:42:05,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:05,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:05,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:05,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:42:06,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:42:06,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:06,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:06,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-12 22:42:06,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-12 22:42:07,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:07,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063455300] [2021-11-12 22:42:07,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063455300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:07,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:07,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2021-11-12 22:42:07,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680365903] [2021-11-12 22:42:07,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:07,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:42:07,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:42:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:07,123 INFO L87 Difference]: Start difference. First operand 602 states and 862 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-12 22:42:09,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:10,091 INFO L93 Difference]: Finished difference Result 1709 states and 2490 transitions. [2021-11-12 22:42:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:42:10,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 184 [2021-11-12 22:42:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:10,097 INFO L225 Difference]: With dead ends: 1709 [2021-11-12 22:42:10,097 INFO L226 Difference]: Without dead ends: 597 [2021-11-12 22:42:10,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:10,102 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 1465 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2720.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.06ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2871.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:10,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 2844 Invalid, 388 Unknown, 0 Unchecked, 12.06ms Time], IncrementalHoareTripleChecker [11 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 2871.62ms Time] [2021-11-12 22:42:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-12 22:42:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-12 22:42:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 448 states have (on average 1.4352678571428572) internal successors, (643), 459 states have internal predecessors, (643), 99 states have call successors, (99), 46 states have call predecessors, (99), 49 states have return successors, (104), 97 states have call predecessors, (104), 98 states have call successors, (104) [2021-11-12 22:42:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 846 transitions. [2021-11-12 22:42:10,136 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 846 transitions. Word has length 184 [2021-11-12 22:42:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:10,137 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 846 transitions. [2021-11-12 22:42:10,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-12 22:42:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 846 transitions. [2021-11-12 22:42:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-12 22:42:10,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:10,142 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:10,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:10,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:10,356 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2028262496, now seen corresponding path program 1 times [2021-11-12 22:42:10,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:10,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987173571] [2021-11-12 22:42:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:10,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:10,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:10,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:42:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:10,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:10,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:11,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:11,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:11,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987173571] [2021-11-12 22:42:11,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987173571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:11,457 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:11,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:11,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191373196] [2021-11-12 22:42:11,457 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:11,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:11,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:11,459 INFO L87 Difference]: Start difference. First operand 597 states and 846 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-12 22:42:13,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:13,523 INFO L93 Difference]: Finished difference Result 1157 states and 1657 transitions. [2021-11-12 22:42:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:13,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 214 [2021-11-12 22:42:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:13,528 INFO L225 Difference]: With dead ends: 1157 [2021-11-12 22:42:13,529 INFO L226 Difference]: Without dead ends: 596 [2021-11-12 22:42:13,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:13,531 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 795 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2023.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2031.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:13,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 854 Invalid, 5 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2031.70ms Time] [2021-11-12 22:42:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-12 22:42:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-12 22:42:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 448 states have (on average 1.4308035714285714) internal successors, (641), 458 states have internal predecessors, (641), 98 states have call successors, (98), 46 states have call predecessors, (98), 49 states have return successors, (103), 96 states have call predecessors, (103), 97 states have call successors, (103) [2021-11-12 22:42:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 842 transitions. [2021-11-12 22:42:13,578 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 842 transitions. Word has length 214 [2021-11-12 22:42:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:13,578 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 842 transitions. [2021-11-12 22:42:13,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-12 22:42:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 842 transitions. [2021-11-12 22:42:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-12 22:42:13,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:13,584 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:13,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:13,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:13,797 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:13,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1114603658, now seen corresponding path program 1 times [2021-11-12 22:42:13,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:13,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336481749] [2021-11-12 22:42:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:13,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:13,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:13,800 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:13,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:42:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:14,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:42:14,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-12 22:42:14,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-12 22:42:15,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:15,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336481749] [2021-11-12 22:42:15,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336481749] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:15,135 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:15,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-12 22:42:15,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426747097] [2021-11-12 22:42:15,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:15,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:42:15,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:42:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:42:15,137 INFO L87 Difference]: Start difference. First operand 596 states and 842 transitions. Second operand has 9 states, 7 states have (on average 22.285714285714285) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-12 22:42:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:15,378 INFO L93 Difference]: Finished difference Result 1111 states and 1593 transitions. [2021-11-12 22:42:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:42:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 22.285714285714285) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 215 [2021-11-12 22:42:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:15,384 INFO L225 Difference]: With dead ends: 1111 [2021-11-12 22:42:15,384 INFO L226 Difference]: Without dead ends: 598 [2021-11-12 22:42:15,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:42:15,388 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 353 mSDsluCounter, 4923 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 5739 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.88ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:15,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 5739 Invalid, 146 Unknown, 0 Unchecked, 8.88ms Time], IncrementalHoareTripleChecker [39 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 168.80ms Time] [2021-11-12 22:42:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-12 22:42:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-12 22:42:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 449 states have (on average 1.4298440979955456) internal successors, (642), 460 states have internal predecessors, (642), 98 states have call successors, (98), 46 states have call predecessors, (98), 50 states have return successors, (107), 96 states have call predecessors, (107), 97 states have call successors, (107) [2021-11-12 22:42:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 847 transitions. [2021-11-12 22:42:15,424 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 847 transitions. Word has length 215 [2021-11-12 22:42:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:15,425 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 847 transitions. [2021-11-12 22:42:15,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 22.285714285714285) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-12 22:42:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 847 transitions. [2021-11-12 22:42:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-12 22:42:15,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:15,429 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:15,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:15,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:15,648 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1847252243, now seen corresponding path program 1 times [2021-11-12 22:42:15,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:15,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732758351] [2021-11-12 22:42:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:15,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:15,650 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:15,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:42:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:16,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:16,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:16,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:16,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:16,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732758351] [2021-11-12 22:42:16,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732758351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:16,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:16,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:42:16,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832034042] [2021-11-12 22:42:16,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:16,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:42:16,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:42:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:16,742 INFO L87 Difference]: Start difference. First operand 598 states and 847 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:16,870 INFO L93 Difference]: Finished difference Result 1043 states and 1488 transitions. [2021-11-12 22:42:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:42:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 209 [2021-11-12 22:42:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:16,877 INFO L225 Difference]: With dead ends: 1043 [2021-11-12 22:42:16,877 INFO L226 Difference]: Without dead ends: 727 [2021-11-12 22:42:16,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:16,880 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 169 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.54ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:16,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1838 Invalid, 26 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 74.54ms Time] [2021-11-12 22:42:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-12 22:42:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 719. [2021-11-12 22:42:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 553 states have (on average 1.4593128390596746) internal successors, (807), 564 states have internal predecessors, (807), 115 states have call successors, (115), 46 states have call predecessors, (115), 50 states have return successors, (126), 113 states have call predecessors, (126), 114 states have call successors, (126) [2021-11-12 22:42:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1048 transitions. [2021-11-12 22:42:16,928 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1048 transitions. Word has length 209 [2021-11-12 22:42:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:16,929 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1048 transitions. [2021-11-12 22:42:16,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1048 transitions. [2021-11-12 22:42:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-12 22:42:16,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:16,933 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:16,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:17,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:17,149 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1826917218, now seen corresponding path program 1 times [2021-11-12 22:42:17,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:17,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076899331] [2021-11-12 22:42:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:17,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:17,151 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:17,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:42:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:17,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:17,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:17,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:18,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:18,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076899331] [2021-11-12 22:42:18,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076899331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:18,279 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:18,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:18,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760533636] [2021-11-12 22:42:18,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:18,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:18,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:18,281 INFO L87 Difference]: Start difference. First operand 719 states and 1048 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:18,371 INFO L93 Difference]: Finished difference Result 1419 states and 2098 transitions. [2021-11-12 22:42:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 228 [2021-11-12 22:42:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:18,377 INFO L225 Difference]: With dead ends: 1419 [2021-11-12 22:42:18,378 INFO L226 Difference]: Without dead ends: 819 [2021-11-12 22:42:18,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:18,381 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 165 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:18,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1629 Invalid, 4 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 23.17ms Time] [2021-11-12 22:42:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-12 22:42:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2021-11-12 22:42:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 631 states have (on average 1.4675118858954042) internal successors, (926), 642 states have internal predecessors, (926), 129 states have call successors, (129), 46 states have call predecessors, (129), 50 states have return successors, (142), 127 states have call predecessors, (142), 128 states have call successors, (142) [2021-11-12 22:42:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1197 transitions. [2021-11-12 22:42:18,435 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1197 transitions. Word has length 228 [2021-11-12 22:42:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:18,436 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1197 transitions. [2021-11-12 22:42:18,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1197 transitions. [2021-11-12 22:42:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-12 22:42:18,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:18,441 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:18,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:18,654 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1610230667, now seen corresponding path program 1 times [2021-11-12 22:42:18,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:18,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213356532] [2021-11-12 22:42:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:18,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:18,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:18,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:42:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:19,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:19,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:19,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:19,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:19,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213356532] [2021-11-12 22:42:19,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213356532] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:19,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:19,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:19,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595913909] [2021-11-12 22:42:19,843 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:19,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:19,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:19,844 INFO L87 Difference]: Start difference. First operand 811 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:19,908 INFO L93 Difference]: Finished difference Result 1695 states and 2553 transitions. [2021-11-12 22:42:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:19,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 222 [2021-11-12 22:42:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:19,916 INFO L225 Difference]: With dead ends: 1695 [2021-11-12 22:42:19,916 INFO L226 Difference]: Without dead ends: 1014 [2021-11-12 22:42:19,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:19,919 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 163 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:19,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1666 Invalid, 4 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 7.05ms Time] [2021-11-12 22:42:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-12 22:42:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1006. [2021-11-12 22:42:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 795 states have (on average 1.4855345911949684) internal successors, (1181), 806 states have internal predecessors, (1181), 160 states have call successors, (160), 46 states have call predecessors, (160), 50 states have return successors, (177), 158 states have call predecessors, (177), 159 states have call successors, (177) [2021-11-12 22:42:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1518 transitions. [2021-11-12 22:42:19,986 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1518 transitions. Word has length 222 [2021-11-12 22:42:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:19,987 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1518 transitions. [2021-11-12 22:42:19,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1518 transitions. [2021-11-12 22:42:19,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-12 22:42:19,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:19,993 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:20,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:20,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:20,209 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1131419899, now seen corresponding path program 1 times [2021-11-12 22:42:20,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:20,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397613125] [2021-11-12 22:42:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:20,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:20,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:20,212 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:20,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 22:42:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:20,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:20,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:20,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:21,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:21,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397613125] [2021-11-12 22:42:21,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397613125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:21,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:21,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:21,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022196627] [2021-11-12 22:42:21,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:21,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:21,372 INFO L87 Difference]: Start difference. First operand 1006 states and 1518 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:21,433 INFO L93 Difference]: Finished difference Result 2266 states and 3493 transitions. [2021-11-12 22:42:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:21,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 223 [2021-11-12 22:42:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:21,454 INFO L225 Difference]: With dead ends: 2266 [2021-11-12 22:42:21,455 INFO L226 Difference]: Without dead ends: 1398 [2021-11-12 22:42:21,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:21,458 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 161 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.74ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:21,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1662 Invalid, 4 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.74ms Time] [2021-11-12 22:42:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-12 22:42:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1390. [2021-11-12 22:42:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1121 states have (on average 1.511150758251561) internal successors, (1694), 1132 states have internal predecessors, (1694), 218 states have call successors, (218), 46 states have call predecessors, (218), 50 states have return successors, (235), 216 states have call predecessors, (235), 217 states have call successors, (235) [2021-11-12 22:42:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2147 transitions. [2021-11-12 22:42:21,593 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2147 transitions. Word has length 223 [2021-11-12 22:42:21,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:21,594 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2147 transitions. [2021-11-12 22:42:21,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2147 transitions. [2021-11-12 22:42:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-12 22:42:21,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:21,604 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:21,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:21,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:21,827 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 122873751, now seen corresponding path program 1 times [2021-11-12 22:42:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:21,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529205270] [2021-11-12 22:42:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:21,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:21,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:21,830 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 22:42:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:22,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:22,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:22,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:22,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:22,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529205270] [2021-11-12 22:42:22,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529205270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:22,980 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:22,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:22,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213032307] [2021-11-12 22:42:22,980 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:22,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:22,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:22,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:22,981 INFO L87 Difference]: Start difference. First operand 1390 states and 2147 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:23,089 INFO L93 Difference]: Finished difference Result 3361 states and 5304 transitions. [2021-11-12 22:42:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:23,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 231 [2021-11-12 22:42:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:23,104 INFO L225 Difference]: With dead ends: 3361 [2021-11-12 22:42:23,104 INFO L226 Difference]: Without dead ends: 2120 [2021-11-12 22:42:23,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:23,108 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 159 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:23,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1663 Invalid, 4 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.91ms Time] [2021-11-12 22:42:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-11-12 22:42:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2112. [2021-11-12 22:42:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1747 states have (on average 1.5380652547223812) internal successors, (2687), 1758 states have internal predecessors, (2687), 314 states have call successors, (314), 46 states have call predecessors, (314), 50 states have return successors, (339), 312 states have call predecessors, (339), 313 states have call successors, (339) [2021-11-12 22:42:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3340 transitions. [2021-11-12 22:42:23,292 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3340 transitions. Word has length 231 [2021-11-12 22:42:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 3340 transitions. [2021-11-12 22:42:23,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3340 transitions. [2021-11-12 22:42:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-12 22:42:23,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:23,307 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:23,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:23,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:23,529 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash 611639683, now seen corresponding path program 1 times [2021-11-12 22:42:23,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:23,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237828167] [2021-11-12 22:42:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:23,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:23,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:23,532 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:23,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:42:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:23,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:23,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:24,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:24,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:24,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237828167] [2021-11-12 22:42:24,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237828167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:24,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:24,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:24,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182576491] [2021-11-12 22:42:24,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:24,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:24,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:24,610 INFO L87 Difference]: Start difference. First operand 2112 states and 3340 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:24,838 INFO L93 Difference]: Finished difference Result 5450 states and 8771 transitions. [2021-11-12 22:42:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 225 [2021-11-12 22:42:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:24,862 INFO L225 Difference]: With dead ends: 5450 [2021-11-12 22:42:24,862 INFO L226 Difference]: Without dead ends: 3498 [2021-11-12 22:42:24,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:24,870 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 157 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:24,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1656 Invalid, 4 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.36ms Time] [2021-11-12 22:42:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2021-11-12 22:42:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3490. [2021-11-12 22:42:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2957 states have (on average 1.5610415962123774) internal successors, (4616), 2968 states have internal predecessors, (4616), 482 states have call successors, (482), 46 states have call predecessors, (482), 50 states have return successors, (523), 480 states have call predecessors, (523), 481 states have call successors, (523) [2021-11-12 22:42:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5621 transitions. [2021-11-12 22:42:25,178 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5621 transitions. Word has length 225 [2021-11-12 22:42:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:25,178 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 5621 transitions. [2021-11-12 22:42:25,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5621 transitions. [2021-11-12 22:42:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-12 22:42:25,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:25,193 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:25,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:25,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:25,413 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 424039409, now seen corresponding path program 1 times [2021-11-12 22:42:25,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:25,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67478651] [2021-11-12 22:42:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:25,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:25,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:25,415 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:25,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 22:42:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:25,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:25,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:26,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:26,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:26,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67478651] [2021-11-12 22:42:26,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67478651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:26,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:26,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:26,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863183996] [2021-11-12 22:42:26,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:26,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:26,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:26,582 INFO L87 Difference]: Start difference. First operand 3490 states and 5621 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:26,940 INFO L93 Difference]: Finished difference Result 9443 states and 15373 transitions. [2021-11-12 22:42:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:26,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 226 [2021-11-12 22:42:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:26,985 INFO L225 Difference]: With dead ends: 9443 [2021-11-12 22:42:26,985 INFO L226 Difference]: Without dead ends: 6124 [2021-11-12 22:42:26,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:26,996 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 155 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:26,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1664 Invalid, 4 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 7.71ms Time] [2021-11-12 22:42:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-11-12 22:42:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 6116. [2021-11-12 22:42:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 5199 states have (on average 1.5651086747451433) internal successors, (8137), 5210 states have internal predecessors, (8137), 866 states have call successors, (866), 46 states have call predecessors, (866), 50 states have return successors, (939), 864 states have call predecessors, (939), 865 states have call successors, (939) [2021-11-12 22:42:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 9942 transitions. [2021-11-12 22:42:27,545 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 9942 transitions. Word has length 226 [2021-11-12 22:42:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:27,546 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 9942 transitions. [2021-11-12 22:42:27,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 9942 transitions. [2021-11-12 22:42:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-12 22:42:27,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:27,568 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:27,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:27,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:27,788 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1982269893, now seen corresponding path program 1 times [2021-11-12 22:42:27,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:27,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437271711] [2021-11-12 22:42:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:27,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:27,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:27,790 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:27,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 22:42:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:28,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:28,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:28,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:28,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:28,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437271711] [2021-11-12 22:42:28,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437271711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:28,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:28,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:28,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11017339] [2021-11-12 22:42:28,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:28,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:28,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:28,972 INFO L87 Difference]: Start difference. First operand 6116 states and 9942 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:29,613 INFO L93 Difference]: Finished difference Result 17247 states and 28293 transitions. [2021-11-12 22:42:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:29,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 234 [2021-11-12 22:42:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:29,660 INFO L225 Difference]: With dead ends: 17247 [2021-11-12 22:42:29,660 INFO L226 Difference]: Without dead ends: 11310 [2021-11-12 22:42:29,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:29,677 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 153 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:29,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1662 Invalid, 4 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.81ms Time] [2021-11-12 22:42:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-11-12 22:42:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11302. [2021-11-12 22:42:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11302 states, 9681 states have (on average 1.5744241297386634) internal successors, (15242), 9692 states have internal predecessors, (15242), 1570 states have call successors, (1570), 46 states have call predecessors, (1570), 50 states have return successors, (1707), 1568 states have call predecessors, (1707), 1569 states have call successors, (1707) [2021-11-12 22:42:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11302 states to 11302 states and 18519 transitions. [2021-11-12 22:42:30,513 INFO L78 Accepts]: Start accepts. Automaton has 11302 states and 18519 transitions. Word has length 234 [2021-11-12 22:42:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:30,513 INFO L470 AbstractCegarLoop]: Abstraction has 11302 states and 18519 transitions. [2021-11-12 22:42:30,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 11302 states and 18519 transitions. [2021-11-12 22:42:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-12 22:42:30,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:30,553 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-12 22:42:30,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:30,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:30,770 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1462168000, now seen corresponding path program 1 times [2021-11-12 22:42:30,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:30,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886623950] [2021-11-12 22:42:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:30,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:30,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:30,773 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:30,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 22:42:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:31,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:31,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:31,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:32,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:32,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886623950] [2021-11-12 22:42:32,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886623950] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:32,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:32,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:42:32,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460525148] [2021-11-12 22:42:32,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:32,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:42:32,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:42:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:32,178 INFO L87 Difference]: Start difference. First operand 11302 states and 18519 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:32,793 INFO L93 Difference]: Finished difference Result 22391 states and 36737 transitions. [2021-11-12 22:42:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:32,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 234 [2021-11-12 22:42:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:32,839 INFO L225 Difference]: With dead ends: 22391 [2021-11-12 22:42:32,840 INFO L226 Difference]: Without dead ends: 11310 [2021-11-12 22:42:32,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:32,869 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 151 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:32,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 2683 Invalid, 5 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 4.06ms Time] [2021-11-12 22:42:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-11-12 22:42:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11302. [2021-11-12 22:42:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11302 states, 9681 states have (on average 1.5678132424336328) internal successors, (15178), 9692 states have internal predecessors, (15178), 1570 states have call successors, (1570), 46 states have call predecessors, (1570), 50 states have return successors, (1707), 1568 states have call predecessors, (1707), 1569 states have call successors, (1707) [2021-11-12 22:42:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11302 states to 11302 states and 18455 transitions. [2021-11-12 22:42:33,779 INFO L78 Accepts]: Start accepts. Automaton has 11302 states and 18455 transitions. Word has length 234 [2021-11-12 22:42:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:33,780 INFO L470 AbstractCegarLoop]: Abstraction has 11302 states and 18455 transitions. [2021-11-12 22:42:33,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11302 states and 18455 transitions. [2021-11-12 22:42:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-12 22:42:33,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:33,809 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:33,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:34,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:34,026 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1352148539, now seen corresponding path program 1 times [2021-11-12 22:42:34,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:34,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541606440] [2021-11-12 22:42:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:34,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:34,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:34,029 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:34,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 22:42:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:34,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:34,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:35,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:35,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:35,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541606440] [2021-11-12 22:42:35,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541606440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:35,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:35,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:35,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738816382] [2021-11-12 22:42:35,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:35,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:35,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:35,440 INFO L87 Difference]: Start difference. First operand 11302 states and 18455 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:36,278 INFO L93 Difference]: Finished difference Result 30411 states and 49374 transitions. [2021-11-12 22:42:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:36,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 235 [2021-11-12 22:42:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:36,358 INFO L225 Difference]: With dead ends: 30411 [2021-11-12 22:42:36,358 INFO L226 Difference]: Without dead ends: 19312 [2021-11-12 22:42:36,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:36,387 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 151 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:36,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1642 Invalid, 4 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.73ms Time] [2021-11-12 22:42:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2021-11-12 22:42:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 19304. [2021-11-12 22:42:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19304 states, 16595 states have (on average 1.5355830069297982) internal successors, (25483), 16606 states have internal predecessors, (25483), 2658 states have call successors, (2658), 46 states have call predecessors, (2658), 50 states have return successors, (2923), 2656 states have call predecessors, (2923), 2657 states have call successors, (2923) [2021-11-12 22:42:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19304 states to 19304 states and 31064 transitions. [2021-11-12 22:42:37,887 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 31064 transitions. Word has length 235 [2021-11-12 22:42:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:37,888 INFO L470 AbstractCegarLoop]: Abstraction has 19304 states and 31064 transitions. [2021-11-12 22:42:37,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 31064 transitions. [2021-11-12 22:42:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-12 22:42:37,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:37,928 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:37,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:38,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:38,147 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash -429946026, now seen corresponding path program 1 times [2021-11-12 22:42:38,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:38,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681723499] [2021-11-12 22:42:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:38,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:38,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:38,151 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:38,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-12 22:42:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:38,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:38,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:38,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:39,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:39,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681723499] [2021-11-12 22:42:39,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681723499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:39,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:39,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:39,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875480842] [2021-11-12 22:42:39,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:39,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:39,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:39,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:39,330 INFO L87 Difference]: Start difference. First operand 19304 states and 31064 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:41,425 INFO L93 Difference]: Finished difference Result 56072 states and 90519 transitions. [2021-11-12 22:42:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:41,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 229 [2021-11-12 22:42:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:41,536 INFO L225 Difference]: With dead ends: 56072 [2021-11-12 22:42:41,536 INFO L226 Difference]: Without dead ends: 36978 [2021-11-12 22:42:41,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:41,576 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 149 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:41,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1669 Invalid, 4 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.17ms Time] [2021-11-12 22:42:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36978 states. [2021-11-12 22:42:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36978 to 36970. [2021-11-12 22:42:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36970 states, 31957 states have (on average 1.5344368995838158) internal successors, (49036), 31968 states have internal predecessors, (49036), 4962 states have call successors, (4962), 46 states have call predecessors, (4962), 50 states have return successors, (5483), 4960 states have call predecessors, (5483), 4961 states have call successors, (5483) [2021-11-12 22:42:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36970 states to 36970 states and 59481 transitions. [2021-11-12 22:42:44,635 INFO L78 Accepts]: Start accepts. Automaton has 36970 states and 59481 transitions. Word has length 229 [2021-11-12 22:42:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:44,636 INFO L470 AbstractCegarLoop]: Abstraction has 36970 states and 59481 transitions. [2021-11-12 22:42:44,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-12 22:42:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 36970 states and 59481 transitions. [2021-11-12 22:42:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-12 22:42:44,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:44,678 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:44,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-12 22:42:44,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:44,878 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1112802984, now seen corresponding path program 1 times [2021-11-12 22:42:44,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:44,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540721206] [2021-11-12 22:42:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:44,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:44,880 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:44,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 22:42:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:45,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:45,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:45,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540721206] [2021-11-12 22:42:45,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540721206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:45,991 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:45,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:45,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537726134] [2021-11-12 22:42:45,992 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:45,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:45,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:45,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:45,993 INFO L87 Difference]: Start difference. First operand 36970 states and 59481 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:50,054 INFO L93 Difference]: Finished difference Result 107524 states and 173711 transitions. [2021-11-12 22:42:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 237 [2021-11-12 22:42:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:50,312 INFO L225 Difference]: With dead ends: 107524 [2021-11-12 22:42:50,312 INFO L226 Difference]: Without dead ends: 70772 [2021-11-12 22:42:50,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:50,387 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 147 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:50,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1663 Invalid, 4 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.04ms Time] [2021-11-12 22:42:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70772 states. [2021-11-12 22:42:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70772 to 70764. [2021-11-12 22:42:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70764 states, 61399 states have (on average 1.5366536914281992) internal successors, (94349), 61410 states have internal predecessors, (94349), 9314 states have call successors, (9314), 46 states have call predecessors, (9314), 50 states have return successors, (10347), 9312 states have call predecessors, (10347), 9313 states have call successors, (10347) [2021-11-12 22:42:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70764 states to 70764 states and 114010 transitions. [2021-11-12 22:42:56,201 INFO L78 Accepts]: Start accepts. Automaton has 70764 states and 114010 transitions. Word has length 237 [2021-11-12 22:42:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:56,204 INFO L470 AbstractCegarLoop]: Abstraction has 70764 states and 114010 transitions. [2021-11-12 22:42:56,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 22:42:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 70764 states and 114010 transitions. [2021-11-12 22:42:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-12 22:42:56,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:56,269 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:56,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:56,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:56,485 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1346044068, now seen corresponding path program 1 times [2021-11-12 22:42:56,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:56,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114723785] [2021-11-12 22:42:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:56,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:56,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:56,488 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:56,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227e716f-4fed-4808-b0d1-dacb1bb433e3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-12 22:42:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:56,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:42:56,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:57,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-12 22:42:57,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:57,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114723785] [2021-11-12 22:42:57,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114723785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:57,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:57,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:42:57,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112843366] [2021-11-12 22:42:57,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:57,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:57,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:57,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:57,635 INFO L87 Difference]: Start difference. First operand 70764 states and 114010 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37)