./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:49:40,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:49:40,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:49:40,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:49:40,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:49:40,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:49:40,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:49:40,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:49:40,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:49:40,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:49:40,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:49:40,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:49:40,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:49:40,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:49:40,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:49:40,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:49:40,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:49:40,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:49:40,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:49:40,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:49:40,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:49:40,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:49:40,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:49:40,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:49:40,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:49:40,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:49:40,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:49:40,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:49:40,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:49:40,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:49:40,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:49:40,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:49:40,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:49:40,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:49:40,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:49:40,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:49:40,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:49:40,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:49:40,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:49:40,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:49:40,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:49:40,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:49:40,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:49:40,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:49:40,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:49:40,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:49:40,876 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:49:40,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:49:40,877 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:49:40,877 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:49:40,883 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:49:40,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:49:40,885 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:49:40,885 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:49:40,885 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:49:40,886 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:49:40,886 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:49:40,886 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:49:40,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:49:40,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:49:40,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:49:40,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:49:40,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:49:40,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:49:40,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:49:40,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:49:40,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:49:40,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:49:40,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:49:40,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:49:40,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:49:40,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:49:40,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:49:40,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:49:40,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:49:40,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:49:40,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:49:40,894 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:49:40,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:49:40,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:49:40,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:49:40,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:49:40,895 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_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2021-11-19 15:49:41,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:49:41,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:49:41,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:49:41,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:49:41,247 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:49:41,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-19 15:49:41,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/b3018c562/28d0919bd2114e3ca78331ef59cab539/FLAG336b7663c [2021-11-19 15:49:41,906 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:49:41,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-19 15:49:41,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/b3018c562/28d0919bd2114e3ca78331ef59cab539/FLAG336b7663c [2021-11-19 15:49:42,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/b3018c562/28d0919bd2114e3ca78331ef59cab539 [2021-11-19 15:49:42,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:49:42,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:49:42,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:42,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:49:42,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:49:42,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:42" (1/1) ... [2021-11-19 15:49:42,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71aa6c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:42, skipping insertion in model container [2021-11-19 15:49:42,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:42" (1/1) ... [2021-11-19 15:49:42,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:49:42,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:49:42,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-19 15:49:42,977 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:42,997 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:49:42,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10b5e873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:42, skipping insertion in model container [2021-11-19 15:49:42,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:42,999 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:49:43,001 INFO L158 Benchmark]: Toolchain (without parser) took 839.18ms. Allocated memory is still 125.8MB. Free memory was 81.2MB in the beginning and 82.1MB in the end (delta: -833.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 15:49:43,002 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:49:43,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.03ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 82.1MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 15:49:43,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.03ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 82.1MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1724]: 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_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:49:45,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:49:45,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:49:45,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:49:45,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:49:45,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:49:45,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:49:45,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:49:45,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:49:45,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:49:45,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:49:45,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:49:45,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:49:45,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:49:45,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:49:45,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:49:45,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:49:45,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:49:45,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:49:45,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:49:45,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:49:45,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:49:45,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:49:45,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:49:45,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:49:45,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:49:45,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:49:45,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:49:45,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:49:45,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:49:45,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:49:45,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:49:45,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:49:45,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:49:45,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:49:45,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:49:45,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:49:45,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:49:45,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:49:45,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:49:45,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:49:45,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:49:45,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:49:45,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:49:45,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:49:45,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:49:45,613 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:49:45,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:49:45,614 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:49:45,614 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:49:45,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:49:45,615 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:49:45,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:49:45,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:49:45,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:49:45,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:49:45,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:49:45,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:49:45,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:49:45,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:49:45,619 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:49:45,619 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:49:45,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:49:45,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:49:45,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:49:45,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:49:45,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:49:45,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:49:45,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:49:45,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:49:45,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:49:45,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:49:45,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:49:45,622 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:49:45,623 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:45,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:49:45,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:49:45,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:49:45,624 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_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2021-11-19 15:49:46,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:49:46,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:49:46,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:49:46,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:49:46,074 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:49:46,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-19 15:49:46,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/3e82ded03/b73ee0a77eca40079ca2a853cdae7b34/FLAGfac2fbfe8 [2021-11-19 15:49:47,069 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:49:47,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-19 15:49:47,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/3e82ded03/b73ee0a77eca40079ca2a853cdae7b34/FLAGfac2fbfe8 [2021-11-19 15:49:47,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/data/3e82ded03/b73ee0a77eca40079ca2a853cdae7b34 [2021-11-19 15:49:47,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:49:47,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:49:47,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:47,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:49:47,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:49:47,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:47" (1/1) ... [2021-11-19 15:49:47,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db1d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:47, skipping insertion in model container [2021-11-19 15:49:47,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:47" (1/1) ... [2021-11-19 15:49:47,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:49:47,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:49:47,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-19 15:49:47,984 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:48,001 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:49:48,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:49:48,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-19 15:49:48,187 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:48,195 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:49:48,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-19 15:49:48,324 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:48,383 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:49:48,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48 WrapperNode [2021-11-19 15:49:48,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:48,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:49:48,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:49:48,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:49:48,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,522 INFO L137 Inliner]: procedures = 154, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1249 [2021-11-19 15:49:48,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:49:48,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:49:48,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:49:48,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:49:48,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:49:48,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:49:48,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:49:48,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:49:48,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (1/1) ... [2021-11-19 15:49:48,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:49:48,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:49:48,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:49:48,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:49:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-19 15:49:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-19 15:49:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-19 15:49:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-19 15:49:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-19 15:49:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-19 15:49:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-19 15:49:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-19 15:49:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-19 15:49:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-19 15:49:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-19 15:49:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-19 15:49:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-19 15:49:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-19 15:49:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-19 15:49:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-19 15:49:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-19 15:49:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-19 15:49:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-19 15:49:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-19 15:49:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-19 15:49:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-19 15:49:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-19 15:49:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-19 15:49:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-19 15:49:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-19 15:49:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-19 15:49:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-19 15:49:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-19 15:49:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-19 15:49:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-19 15:49:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-19 15:49:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-19 15:49:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-19 15:49:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-19 15:49:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-19 15:49:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-19 15:49:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-19 15:49:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-19 15:49:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-19 15:49:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-19 15:49:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-19 15:49:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-19 15:49:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-19 15:49:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-19 15:49:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-19 15:49:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-19 15:49:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:49:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-19 15:49:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-19 15:49:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-19 15:49:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-19 15:49:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-19 15:49:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-19 15:49:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-19 15:49:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-19 15:49:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-19 15:49:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-19 15:49:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-19 15:49:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-19 15:49:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-19 15:49:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-19 15:49:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-19 15:49:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-19 15:49:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-19 15:49:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-19 15:49:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:49:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-19 15:49:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-19 15:49:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-19 15:49:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-19 15:49:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-19 15:49:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-19 15:49:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-19 15:49:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-19 15:49:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-19 15:49:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-19 15:49:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-19 15:49:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-19 15:49:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-19 15:49:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-19 15:49:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-19 15:49:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-19 15:49:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-19 15:49:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-19 15:49:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-19 15:49:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-19 15:49:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-19 15:49:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-19 15:49:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:49:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:49:49,166 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:49:49,169 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:49:50,571 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:49:50,588 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:49:50,589 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:49:50,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:49:50 BoogieIcfgContainer [2021-11-19 15:49:50,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:49:50,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:49:50,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:49:50,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:49:50,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:49:47" (1/3) ... [2021-11-19 15:49:50,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4439c114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:49:50, skipping insertion in model container [2021-11-19 15:49:50,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48" (2/3) ... [2021-11-19 15:49:50,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4439c114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:49:50, skipping insertion in model container [2021-11-19 15:49:50,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:49:50" (3/3) ... [2021-11-19 15:49:50,604 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2021-11-19 15:49:50,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:49:50,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:49:50,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:49:50,691 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:49:50,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:49:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 604 states, 449 states have (on average 1.5144766146993318) internal successors, (680), 469 states have internal predecessors, (680), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-19 15:49:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:49:50,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:50,817 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:50,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1310995889, now seen corresponding path program 1 times [2021-11-19 15:49:50,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:50,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709046852] [2021-11-19 15:49:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:50,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:50,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:50,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:50,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:49:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:51,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:49:51,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:51,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:52,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:52,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709046852] [2021-11-19 15:49:52,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709046852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:52,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:52,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:49:52,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284693420] [2021-11-19 15:49:52,125 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:52,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:49:52,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:49:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:49:52,176 INFO L87 Difference]: Start difference. First operand has 604 states, 449 states have (on average 1.5144766146993318) internal successors, (680), 469 states have internal predecessors, (680), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 15:49:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:52,317 INFO L93 Difference]: Finished difference Result 939 states and 1379 transitions. [2021-11-19 15:49:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:49:52,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 127 [2021-11-19 15:49:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:52,344 INFO L225 Difference]: With dead ends: 939 [2021-11-19 15:49:52,344 INFO L226 Difference]: Without dead ends: 597 [2021-11-19 15:49:52,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:49:52,357 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:52,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:49:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-19 15:49:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-19 15:49:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 443 states have (on average 1.510158013544018) internal successors, (669), 462 states have internal predecessors, (669), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-19 15:49:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 888 transitions. [2021-11-19 15:49:52,519 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 888 transitions. Word has length 127 [2021-11-19 15:49:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:52,523 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 888 transitions. [2021-11-19 15:49:52,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 15:49:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 888 transitions. [2021-11-19 15:49:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 15:49:52,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:52,537 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:52,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:52,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:52,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1140437170, now seen corresponding path program 1 times [2021-11-19 15:49:52,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:52,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504672175] [2021-11-19 15:49:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:52,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:52,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:52,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:49:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:53,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:49:53,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:53,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:53,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:53,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504672175] [2021-11-19 15:49:53,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504672175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:53,855 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:53,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:49:53,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847241408] [2021-11-19 15:49:53,862 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:53,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:53,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:53,869 INFO L87 Difference]: Start difference. First operand 597 states and 888 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:49:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:54,056 INFO L93 Difference]: Finished difference Result 1158 states and 1720 transitions. [2021-11-19 15:49:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:54,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 128 [2021-11-19 15:49:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:54,074 INFO L225 Difference]: With dead ends: 1158 [2021-11-19 15:49:54,074 INFO L226 Difference]: Without dead ends: 597 [2021-11-19 15:49:54,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:49:54,079 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 3 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:54,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3533 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:49:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-19 15:49:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-19 15:49:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 443 states have (on average 1.4943566591422122) internal successors, (662), 462 states have internal predecessors, (662), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-19 15:49:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 881 transitions. [2021-11-19 15:49:54,148 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 881 transitions. Word has length 128 [2021-11-19 15:49:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:54,150 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 881 transitions. [2021-11-19 15:49:54,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:49:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 881 transitions. [2021-11-19 15:49:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 15:49:54,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:54,159 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:54,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:54,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:54,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 123449077, now seen corresponding path program 1 times [2021-11-19 15:49:54,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:54,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106202482] [2021-11-19 15:49:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:54,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:54,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:54,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:54,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:49:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:54,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:49:54,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-19 15:49:55,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:55,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:55,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106202482] [2021-11-19 15:49:55,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106202482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:55,678 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:55,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:49:55,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428977365] [2021-11-19 15:49:55,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:55,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:49:55,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:49:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:49:55,688 INFO L87 Difference]: Start difference. First operand 597 states and 881 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 15:49:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:55,824 INFO L93 Difference]: Finished difference Result 1168 states and 1744 transitions. [2021-11-19 15:49:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:49:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 133 [2021-11-19 15:49:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:55,832 INFO L225 Difference]: With dead ends: 1168 [2021-11-19 15:49:55,832 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 15:49:55,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:49:55,839 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 795 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:55,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 883 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:49:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 15:49:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 15:49:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 444 states have (on average 1.481981981981982) internal successors, (658), 461 states have internal predecessors, (658), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-19 15:49:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 871 transitions. [2021-11-19 15:49:55,905 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 871 transitions. Word has length 133 [2021-11-19 15:49:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:55,905 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 871 transitions. [2021-11-19 15:49:55,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 15:49:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 871 transitions. [2021-11-19 15:49:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 15:49:55,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:55,911 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:55,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:56,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:56,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash 235987301, now seen corresponding path program 1 times [2021-11-19 15:49:56,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:56,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871186108] [2021-11-19 15:49:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:56,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:56,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:56,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:56,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:49:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:56,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:49:56,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:56,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:57,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:57,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871186108] [2021-11-19 15:49:57,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871186108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:57,334 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:57,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:49:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779134271] [2021-11-19 15:49:57,335 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:57,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:49:57,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:49:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:49:57,337 INFO L87 Difference]: Start difference. First operand 596 states and 871 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:49:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:57,412 INFO L93 Difference]: Finished difference Result 1161 states and 1712 transitions. [2021-11-19 15:49:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:49:57,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 149 [2021-11-19 15:49:57,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:57,419 INFO L225 Difference]: With dead ends: 1161 [2021-11-19 15:49:57,419 INFO L226 Difference]: Without dead ends: 595 [2021-11-19 15:49:57,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:49:57,423 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 833 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:57,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 892 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:49:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-19 15:49:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2021-11-19 15:49:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 444 states have (on average 1.4774774774774775) internal successors, (656), 460 states have internal predecessors, (656), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-19 15:49:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 867 transitions. [2021-11-19 15:49:57,481 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 867 transitions. Word has length 149 [2021-11-19 15:49:57,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:57,484 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 867 transitions. [2021-11-19 15:49:57,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:49:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 867 transitions. [2021-11-19 15:49:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 15:49:57,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:57,492 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:57,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:57,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:57,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:57,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -497393103, now seen corresponding path program 1 times [2021-11-19 15:49:57,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:57,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619793448] [2021-11-19 15:49:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:57,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:57,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:57,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:57,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:49:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:58,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:49:58,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:58,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:49:58,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:58,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619793448] [2021-11-19 15:49:58,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619793448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:58,803 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:58,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:49:58,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781852122] [2021-11-19 15:49:58,803 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:58,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:49:58,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:49:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:49:58,805 INFO L87 Difference]: Start difference. First operand 595 states and 867 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:49:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:58,945 INFO L93 Difference]: Finished difference Result 1141 states and 1670 transitions. [2021-11-19 15:49:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:49:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 150 [2021-11-19 15:49:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:58,952 INFO L225 Difference]: With dead ends: 1141 [2021-11-19 15:49:58,952 INFO L226 Difference]: Without dead ends: 592 [2021-11-19 15:49:58,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:49:58,957 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 805 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:58,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 869 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:49:58,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-19 15:49:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2021-11-19 15:49:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 444 states have (on average 1.4527027027027026) internal successors, (645), 455 states have internal predecessors, (645), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-19 15:49:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 850 transitions. [2021-11-19 15:49:59,009 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 850 transitions. Word has length 150 [2021-11-19 15:49:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:59,009 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 850 transitions. [2021-11-19 15:49:59,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 15:49:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 850 transitions. [2021-11-19 15:49:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-19 15:49:59,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:59,015 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:59,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:59,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:59,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:59,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash -608262645, now seen corresponding path program 1 times [2021-11-19 15:49:59,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:59,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504340673] [2021-11-19 15:49:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:59,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:59,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:59,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:59,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:49:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:59,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:49:59,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 15:50:00,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:50:00,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:00,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504340673] [2021-11-19 15:50:00,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504340673] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:50:00,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:50:00,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-19 15:50:00,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856535996] [2021-11-19 15:50:00,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:00,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:00,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:00,763 INFO L87 Difference]: Start difference. First operand 592 states and 850 transitions. Second operand has 8 states, 6 states have (on average 17.0) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 15:50:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:01,019 INFO L93 Difference]: Finished difference Result 1131 states and 1637 transitions. [2021-11-19 15:50:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:50:01,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 17.0) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 175 [2021-11-19 15:50:01,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:01,025 INFO L225 Difference]: With dead ends: 1131 [2021-11-19 15:50:01,025 INFO L226 Difference]: Without dead ends: 594 [2021-11-19 15:50:01,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:50:01,029 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 363 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5450 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:01,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5450 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-19 15:50:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-19 15:50:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 445 states have (on average 1.451685393258427) internal successors, (646), 457 states have internal predecessors, (646), 103 states have call successors, (103), 44 states have call predecessors, (103), 45 states have return successors, (104), 101 states have call predecessors, (104), 102 states have call successors, (104) [2021-11-19 15:50:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 853 transitions. [2021-11-19 15:50:01,072 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 853 transitions. Word has length 175 [2021-11-19 15:50:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:01,073 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 853 transitions. [2021-11-19 15:50:01,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 17.0) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 15:50:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 853 transitions. [2021-11-19 15:50:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-19 15:50:01,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:01,077 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:01,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:01,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:01,294 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash 795964079, now seen corresponding path program 1 times [2021-11-19 15:50:01,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:01,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796350199] [2021-11-19 15:50:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:01,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:01,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:01,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:50:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:01,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:50:01,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 15:50:02,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:50:02,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:02,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796350199] [2021-11-19 15:50:02,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796350199] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:50:02,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:50:02,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 15:50:02,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454947051] [2021-11-19 15:50:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:02,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:02,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:50:02,624 INFO L87 Difference]: Start difference. First operand 594 states and 853 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:50:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:02,887 INFO L93 Difference]: Finished difference Result 1132 states and 1640 transitions. [2021-11-19 15:50:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 169 [2021-11-19 15:50:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:02,895 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 15:50:02,896 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 15:50:02,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:50:02,900 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 361 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:02,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3776 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 15:50:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 15:50:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4506726457399104) internal successors, (647), 459 states have internal predecessors, (647), 103 states have call successors, (103), 44 states have call predecessors, (103), 46 states have return successors, (108), 101 states have call predecessors, (108), 102 states have call successors, (108) [2021-11-19 15:50:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 858 transitions. [2021-11-19 15:50:02,972 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 858 transitions. Word has length 169 [2021-11-19 15:50:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:02,973 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 858 transitions. [2021-11-19 15:50:02,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:50:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 858 transitions. [2021-11-19 15:50:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-19 15:50:02,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:02,978 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] [2021-11-19 15:50:03,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:03,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:03,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:03,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1149889488, now seen corresponding path program 1 times [2021-11-19 15:50:03,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:03,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296737026] [2021-11-19 15:50:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:03,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:03,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:03,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:03,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:50:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:03,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:03,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 15:50:03,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:50:04,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:04,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296737026] [2021-11-19 15:50:04,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296737026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:04,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:04,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 15:50:04,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876763839] [2021-11-19 15:50:04,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:04,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:50:04,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:50:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:04,511 INFO L87 Difference]: Start difference. First operand 596 states and 858 transitions. Second operand has 12 states, 8 states have (on average 15.875) internal successors, (127), 12 states have internal predecessors, (127), 6 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-19 15:50:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:04,838 INFO L93 Difference]: Finished difference Result 1120 states and 1626 transitions. [2021-11-19 15:50:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:50:04,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 15.875) internal successors, (127), 12 states have internal predecessors, (127), 6 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) Word has length 177 [2021-11-19 15:50:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:04,845 INFO L225 Difference]: With dead ends: 1120 [2021-11-19 15:50:04,845 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 15:50:04,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:50:04,850 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 359 mSDsluCounter, 5910 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 6747 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:04,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 6747 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 15:50:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 15:50:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4506726457399104) internal successors, (647), 459 states have internal predecessors, (647), 103 states have call successors, (103), 44 states have call predecessors, (103), 46 states have return successors, (107), 101 states have call predecessors, (107), 102 states have call successors, (107) [2021-11-19 15:50:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 857 transitions. [2021-11-19 15:50:04,901 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 857 transitions. Word has length 177 [2021-11-19 15:50:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:04,902 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 857 transitions. [2021-11-19 15:50:04,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 15.875) internal successors, (127), 12 states have internal predecessors, (127), 6 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-19 15:50:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 857 transitions. [2021-11-19 15:50:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 15:50:04,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:04,906 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:04,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 15:50:05,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:05,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2061645928, now seen corresponding path program 1 times [2021-11-19 15:50:05,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:05,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980338226] [2021-11-19 15:50:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:05,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:05,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:05,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:05,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:50:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:05,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:05,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 15:50:05,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 15:50:06,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:06,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980338226] [2021-11-19 15:50:06,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980338226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:06,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:06,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 15:50:06,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962650656] [2021-11-19 15:50:06,384 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:06,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:50:06,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:50:06,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:06,404 INFO L87 Difference]: Start difference. First operand 596 states and 857 transitions. Second operand has 12 states, 8 states have (on average 15.125) internal successors, (121), 12 states have internal predecessors, (121), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 15:50:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:06,740 INFO L93 Difference]: Finished difference Result 1122 states and 1629 transitions. [2021-11-19 15:50:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:50:06,741 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 15.125) internal successors, (121), 12 states have internal predecessors, (121), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) Word has length 171 [2021-11-19 15:50:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:06,747 INFO L225 Difference]: With dead ends: 1122 [2021-11-19 15:50:06,748 INFO L226 Difference]: Without dead ends: 598 [2021-11-19 15:50:06,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:50:06,751 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 529 mSDsluCounter, 6940 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 7778 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:06,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 7778 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-19 15:50:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-19 15:50:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 447 states have (on average 1.4496644295302012) internal successors, (648), 461 states have internal predecessors, (648), 103 states have call successors, (103), 44 states have call predecessors, (103), 47 states have return successors, (109), 101 states have call predecessors, (109), 102 states have call successors, (109) [2021-11-19 15:50:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 860 transitions. [2021-11-19 15:50:06,799 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 860 transitions. Word has length 171 [2021-11-19 15:50:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:06,800 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 860 transitions. [2021-11-19 15:50:06,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 15.125) internal successors, (121), 12 states have internal predecessors, (121), 6 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 15:50:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 860 transitions. [2021-11-19 15:50:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 15:50:06,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:06,805 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] [2021-11-19 15:50:06,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:07,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:07,019 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:07,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2041539809, now seen corresponding path program 1 times [2021-11-19 15:50:07,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:07,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044400104] [2021-11-19 15:50:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:07,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:07,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:07,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:50:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:07,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:50:07,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:50:07,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:50:08,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:08,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044400104] [2021-11-19 15:50:08,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044400104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:08,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:08,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 15:50:08,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49591082] [2021-11-19 15:50:08,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:08,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:50:08,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:50:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:50:08,199 INFO L87 Difference]: Start difference. First operand 598 states and 860 transitions. Second operand has 9 states, 7 states have (on average 16.714285714285715) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:50:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:08,466 INFO L93 Difference]: Finished difference Result 1119 states and 1623 transitions. [2021-11-19 15:50:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:08,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 16.714285714285715) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 172 [2021-11-19 15:50:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:08,473 INFO L225 Difference]: With dead ends: 1119 [2021-11-19 15:50:08,473 INFO L226 Difference]: Without dead ends: 598 [2021-11-19 15:50:08,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:50:08,476 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 537 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:08,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 4429 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-19 15:50:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-19 15:50:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 447 states have (on average 1.4496644295302012) internal successors, (648), 461 states have internal predecessors, (648), 103 states have call successors, (103), 44 states have call predecessors, (103), 47 states have return successors, (108), 101 states have call predecessors, (108), 102 states have call successors, (108) [2021-11-19 15:50:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 859 transitions. [2021-11-19 15:50:08,521 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 859 transitions. Word has length 172 [2021-11-19 15:50:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:08,521 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 859 transitions. [2021-11-19 15:50:08,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 16.714285714285715) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:50:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 859 transitions. [2021-11-19 15:50:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-19 15:50:08,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:08,526 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] [2021-11-19 15:50:08,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:08,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:08,743 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1461676620, now seen corresponding path program 2 times [2021-11-19 15:50:08,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:08,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187843414] [2021-11-19 15:50:08,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:50:08,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:08,746 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:08,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:50:08,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 15:50:08,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:08,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:09,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:09,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:09,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187843414] [2021-11-19 15:50:09,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187843414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:09,534 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:09,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:50:09,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852899958] [2021-11-19 15:50:09,534 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:09,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:09,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:09,537 INFO L87 Difference]: Start difference. First operand 598 states and 859 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:09,688 INFO L93 Difference]: Finished difference Result 1051 states and 1517 transitions. [2021-11-19 15:50:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:09,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 173 [2021-11-19 15:50:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:09,695 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 15:50:09,695 INFO L226 Difference]: Without dead ends: 727 [2021-11-19 15:50:09,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:09,698 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 169 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:09,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1888 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-19 15:50:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 719. [2021-11-19 15:50:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 551 states have (on average 1.4754990925589837) internal successors, (813), 565 states have internal predecessors, (813), 120 states have call successors, (120), 44 states have call predecessors, (120), 47 states have return successors, (126), 118 states have call predecessors, (126), 119 states have call successors, (126) [2021-11-19 15:50:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1059 transitions. [2021-11-19 15:50:09,752 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1059 transitions. Word has length 173 [2021-11-19 15:50:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:09,752 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1059 transitions. [2021-11-19 15:50:09,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1059 transitions. [2021-11-19 15:50:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-19 15:50:09,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:09,758 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:09,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:09,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:09,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash -759212636, now seen corresponding path program 1 times [2021-11-19 15:50:09,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:09,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782843194] [2021-11-19 15:50:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:09,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:09,976 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:09,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:50:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:10,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:50:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:50:10,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:50:11,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:11,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782843194] [2021-11-19 15:50:11,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782843194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:11,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:11,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 15:50:11,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634535560] [2021-11-19 15:50:11,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:11,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:50:11,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:11,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:50:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:50:11,012 INFO L87 Difference]: Start difference. First operand 719 states and 1059 transitions. Second operand has 9 states, 7 states have (on average 19.857142857142858) internal successors, (139), 9 states have internal predecessors, (139), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 15:50:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:11,324 INFO L93 Difference]: Finished difference Result 1363 states and 2029 transitions. [2021-11-19 15:50:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 19.857142857142858) internal successors, (139), 9 states have internal predecessors, (139), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 192 [2021-11-19 15:50:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:11,336 INFO L225 Difference]: With dead ends: 1363 [2021-11-19 15:50:11,336 INFO L226 Difference]: Without dead ends: 721 [2021-11-19 15:50:11,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:50:11,340 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 359 mSDsluCounter, 4241 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 5078 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:11,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 5078 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-11-19 15:50:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2021-11-19 15:50:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 552 states have (on average 1.4746376811594204) internal successors, (814), 567 states have internal predecessors, (814), 120 states have call successors, (120), 44 states have call predecessors, (120), 48 states have return successors, (131), 118 states have call predecessors, (131), 119 states have call successors, (131) [2021-11-19 15:50:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1065 transitions. [2021-11-19 15:50:11,401 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1065 transitions. Word has length 192 [2021-11-19 15:50:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:11,402 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1065 transitions. [2021-11-19 15:50:11,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 19.857142857142858) internal successors, (139), 9 states have internal predecessors, (139), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 15:50:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1065 transitions. [2021-11-19 15:50:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-19 15:50:11,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:11,408 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:11,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:11,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:11,624 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:11,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1482418970, now seen corresponding path program 1 times [2021-11-19 15:50:11,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:11,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280828179] [2021-11-19 15:50:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:11,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:11,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:11,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:11,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:50:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:11,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:50:11,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:50:12,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 15:50:12,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:12,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280828179] [2021-11-19 15:50:12,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280828179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:12,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:12,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 15:50:12,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456021142] [2021-11-19 15:50:12,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:12,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:50:12,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:50:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:50:12,747 INFO L87 Difference]: Start difference. First operand 721 states and 1065 transitions. Second operand has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-19 15:50:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:13,014 INFO L93 Difference]: Finished difference Result 1367 states and 2039 transitions. [2021-11-19 15:50:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:13,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 186 [2021-11-19 15:50:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:13,022 INFO L225 Difference]: With dead ends: 1367 [2021-11-19 15:50:13,022 INFO L226 Difference]: Without dead ends: 723 [2021-11-19 15:50:13,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:50:13,026 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 359 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:13,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2955 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-19 15:50:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2021-11-19 15:50:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 552 states have (on average 1.4746376811594204) internal successors, (814), 567 states have internal predecessors, (814), 120 states have call successors, (120), 44 states have call predecessors, (120), 48 states have return successors, (131), 118 states have call predecessors, (131), 119 states have call successors, (131) [2021-11-19 15:50:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1065 transitions. [2021-11-19 15:50:13,083 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1065 transitions. Word has length 186 [2021-11-19 15:50:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:13,084 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1065 transitions. [2021-11-19 15:50:13,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-19 15:50:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1065 transitions. [2021-11-19 15:50:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 15:50:13,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:13,089 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:13,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:13,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:13,303 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 802926290, now seen corresponding path program 1 times [2021-11-19 15:50:13,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:13,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153889564] [2021-11-19 15:50:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:13,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:13,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:13,305 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:13,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:50:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:13,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:13,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:13,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:14,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:14,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153889564] [2021-11-19 15:50:14,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153889564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:14,210 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:14,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:14,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604782042] [2021-11-19 15:50:14,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:14,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:14,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:14,212 INFO L87 Difference]: Start difference. First operand 721 states and 1065 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:14,278 INFO L93 Difference]: Finished difference Result 1429 states and 2133 transitions. [2021-11-19 15:50:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2021-11-19 15:50:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:14,285 INFO L225 Difference]: With dead ends: 1429 [2021-11-19 15:50:14,285 INFO L226 Difference]: Without dead ends: 821 [2021-11-19 15:50:14,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:14,289 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 165 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:14,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1668 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-11-19 15:50:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 813. [2021-11-19 15:50:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 630 states have (on average 1.480952380952381) internal successors, (933), 645 states have internal predecessors, (933), 134 states have call successors, (134), 44 states have call predecessors, (134), 48 states have return successors, (147), 132 states have call predecessors, (147), 133 states have call successors, (147) [2021-11-19 15:50:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1214 transitions. [2021-11-19 15:50:14,374 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1214 transitions. Word has length 193 [2021-11-19 15:50:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:14,375 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1214 transitions. [2021-11-19 15:50:14,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1214 transitions. [2021-11-19 15:50:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-19 15:50:14,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:14,379 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:14,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:14,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:14,599 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash -151289126, now seen corresponding path program 1 times [2021-11-19 15:50:14,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:14,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427500053] [2021-11-19 15:50:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:14,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:14,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:14,602 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:14,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:50:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:14,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:14,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:15,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:15,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:15,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427500053] [2021-11-19 15:50:15,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427500053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:15,749 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:15,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:15,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573286062] [2021-11-19 15:50:15,750 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:15,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:15,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:15,751 INFO L87 Difference]: Start difference. First operand 813 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:15,853 INFO L93 Difference]: Finished difference Result 1705 states and 2588 transitions. [2021-11-19 15:50:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:15,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 194 [2021-11-19 15:50:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:15,864 INFO L225 Difference]: With dead ends: 1705 [2021-11-19 15:50:15,864 INFO L226 Difference]: Without dead ends: 1016 [2021-11-19 15:50:15,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:15,869 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 163 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:15,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1714 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-11-19 15:50:15,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1008. [2021-11-19 15:50:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 794 states have (on average 1.4962216624685138) internal successors, (1188), 809 states have internal predecessors, (1188), 165 states have call successors, (165), 44 states have call predecessors, (165), 48 states have return successors, (182), 163 states have call predecessors, (182), 164 states have call successors, (182) [2021-11-19 15:50:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1535 transitions. [2021-11-19 15:50:16,003 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1535 transitions. Word has length 194 [2021-11-19 15:50:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:16,005 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1535 transitions. [2021-11-19 15:50:16,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1535 transitions. [2021-11-19 15:50:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 15:50:16,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:16,012 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:16,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:16,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:16,228 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1897803950, now seen corresponding path program 1 times [2021-11-19 15:50:16,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:16,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840731175] [2021-11-19 15:50:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:16,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:16,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:16,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:16,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:50:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:16,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:16,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:16,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:17,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:17,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840731175] [2021-11-19 15:50:17,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840731175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:17,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:17,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:17,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69029689] [2021-11-19 15:50:17,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:17,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:17,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:17,159 INFO L87 Difference]: Start difference. First operand 1008 states and 1535 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:17,276 INFO L93 Difference]: Finished difference Result 2276 states and 3528 transitions. [2021-11-19 15:50:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 188 [2021-11-19 15:50:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:17,291 INFO L225 Difference]: With dead ends: 2276 [2021-11-19 15:50:17,291 INFO L226 Difference]: Without dead ends: 1400 [2021-11-19 15:50:17,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:17,296 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 161 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:17,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-19 15:50:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1392. [2021-11-19 15:50:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1120 states have (on average 1.51875) internal successors, (1701), 1135 states have internal predecessors, (1701), 223 states have call successors, (223), 44 states have call predecessors, (223), 48 states have return successors, (240), 221 states have call predecessors, (240), 222 states have call successors, (240) [2021-11-19 15:50:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2164 transitions. [2021-11-19 15:50:17,416 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2164 transitions. Word has length 188 [2021-11-19 15:50:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:17,417 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2164 transitions. [2021-11-19 15:50:17,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2164 transitions. [2021-11-19 15:50:17,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-19 15:50:17,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:17,426 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:17,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:17,642 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -281148925, now seen corresponding path program 1 times [2021-11-19 15:50:17,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:17,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288339188] [2021-11-19 15:50:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:17,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:17,644 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:17,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:50:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:17,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:17,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:18,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:18,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:18,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288339188] [2021-11-19 15:50:18,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288339188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:18,618 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:18,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:18,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434790192] [2021-11-19 15:50:18,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:18,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:18,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:18,622 INFO L87 Difference]: Start difference. First operand 1392 states and 2164 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:18,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:18,807 INFO L93 Difference]: Finished difference Result 3371 states and 5339 transitions. [2021-11-19 15:50:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:18,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 189 [2021-11-19 15:50:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:18,829 INFO L225 Difference]: With dead ends: 3371 [2021-11-19 15:50:18,829 INFO L226 Difference]: Without dead ends: 2122 [2021-11-19 15:50:18,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:18,839 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 159 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:18,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-19 15:50:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2114. [2021-11-19 15:50:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 1746 states have (on average 1.5429553264604812) internal successors, (2694), 1761 states have internal predecessors, (2694), 319 states have call successors, (319), 44 states have call predecessors, (319), 48 states have return successors, (344), 317 states have call predecessors, (344), 318 states have call successors, (344) [2021-11-19 15:50:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3357 transitions. [2021-11-19 15:50:19,049 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3357 transitions. Word has length 189 [2021-11-19 15:50:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:19,050 INFO L470 AbstractCegarLoop]: Abstraction has 2114 states and 3357 transitions. [2021-11-19 15:50:19,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3357 transitions. [2021-11-19 15:50:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-19 15:50:19,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:19,061 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:19,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:19,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:19,275 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1946834624, now seen corresponding path program 1 times [2021-11-19 15:50:19,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:19,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080567855] [2021-11-19 15:50:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:19,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:19,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:19,277 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:19,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:50:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:19,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:19,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:20,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:20,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:20,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080567855] [2021-11-19 15:50:20,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080567855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:20,357 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:20,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:20,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646299666] [2021-11-19 15:50:20,358 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:20,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:20,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:20,360 INFO L87 Difference]: Start difference. First operand 2114 states and 3357 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:20,576 INFO L93 Difference]: Finished difference Result 5460 states and 8806 transitions. [2021-11-19 15:50:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 197 [2021-11-19 15:50:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:20,636 INFO L225 Difference]: With dead ends: 5460 [2021-11-19 15:50:20,636 INFO L226 Difference]: Without dead ends: 3500 [2021-11-19 15:50:20,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:20,644 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 157 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:20,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-11-19 15:50:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3492. [2021-11-19 15:50:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 2956 states have (on average 1.5639377537212449) internal successors, (4623), 2971 states have internal predecessors, (4623), 487 states have call successors, (487), 44 states have call predecessors, (487), 48 states have return successors, (528), 485 states have call predecessors, (528), 486 states have call successors, (528) [2021-11-19 15:50:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5638 transitions. [2021-11-19 15:50:20,990 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5638 transitions. Word has length 197 [2021-11-19 15:50:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:20,992 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 5638 transitions. [2021-11-19 15:50:20,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5638 transitions. [2021-11-19 15:50:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-19 15:50:21,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:21,006 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:21,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:21,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:21,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 984162136, now seen corresponding path program 1 times [2021-11-19 15:50:21,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:21,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346920230] [2021-11-19 15:50:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:21,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:21,232 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:21,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:50:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:21,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:21,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:21,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:22,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:22,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346920230] [2021-11-19 15:50:22,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346920230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:22,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:22,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:22,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038603069] [2021-11-19 15:50:22,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:22,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:22,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:22,153 INFO L87 Difference]: Start difference. First operand 3492 states and 5638 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:22,511 INFO L93 Difference]: Finished difference Result 9453 states and 15408 transitions. [2021-11-19 15:50:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:22,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 191 [2021-11-19 15:50:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:22,562 INFO L225 Difference]: With dead ends: 9453 [2021-11-19 15:50:22,562 INFO L226 Difference]: Without dead ends: 6126 [2021-11-19 15:50:22,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:22,575 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 155 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:22,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1723 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2021-11-19 15:50:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6118. [2021-11-19 15:50:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 5198 states have (on average 1.5667564447864564) internal successors, (8144), 5213 states have internal predecessors, (8144), 871 states have call successors, (871), 44 states have call predecessors, (871), 48 states have return successors, (944), 869 states have call predecessors, (944), 870 states have call successors, (944) [2021-11-19 15:50:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 9959 transitions. [2021-11-19 15:50:23,072 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 9959 transitions. Word has length 191 [2021-11-19 15:50:23,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:23,073 INFO L470 AbstractCegarLoop]: Abstraction has 6118 states and 9959 transitions. [2021-11-19 15:50:23,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:23,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 9959 transitions. [2021-11-19 15:50:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-19 15:50:23,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:23,087 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:23,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:23,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:23,303 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash 510048865, now seen corresponding path program 1 times [2021-11-19 15:50:23,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:23,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746567255] [2021-11-19 15:50:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:23,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:23,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:23,305 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:23,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:50:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:23,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:23,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:23,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:24,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:24,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746567255] [2021-11-19 15:50:24,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746567255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:24,226 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:24,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:24,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289421258] [2021-11-19 15:50:24,226 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:24,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:24,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:24,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:24,227 INFO L87 Difference]: Start difference. First operand 6118 states and 9959 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:24,793 INFO L93 Difference]: Finished difference Result 17257 states and 28328 transitions. [2021-11-19 15:50:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 192 [2021-11-19 15:50:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:24,861 INFO L225 Difference]: With dead ends: 17257 [2021-11-19 15:50:24,861 INFO L226 Difference]: Without dead ends: 11312 [2021-11-19 15:50:24,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:24,884 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 153 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:24,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1703 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-11-19 15:50:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11304. [2021-11-19 15:50:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11304 states, 9680 states have (on average 1.575309917355372) internal successors, (15249), 9695 states have internal predecessors, (15249), 1575 states have call successors, (1575), 44 states have call predecessors, (1575), 48 states have return successors, (1712), 1573 states have call predecessors, (1712), 1574 states have call successors, (1712) [2021-11-19 15:50:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 18536 transitions. [2021-11-19 15:50:25,772 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 18536 transitions. Word has length 192 [2021-11-19 15:50:25,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:25,773 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 18536 transitions. [2021-11-19 15:50:25,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 18536 transitions. [2021-11-19 15:50:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-19 15:50:25,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:25,794 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:25,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:26,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:26,007 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash -992557498, now seen corresponding path program 1 times [2021-11-19 15:50:26,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:26,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623536140] [2021-11-19 15:50:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:26,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:26,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:26,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 15:50:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:26,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:26,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:26,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:26,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:26,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623536140] [2021-11-19 15:50:26,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623536140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:26,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:26,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:50:26,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137600046] [2021-11-19 15:50:26,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:26,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:26,926 INFO L87 Difference]: Start difference. First operand 11304 states and 18536 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:27,601 INFO L93 Difference]: Finished difference Result 22401 states and 36772 transitions. [2021-11-19 15:50:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 192 [2021-11-19 15:50:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:27,645 INFO L225 Difference]: With dead ends: 22401 [2021-11-19 15:50:27,645 INFO L226 Difference]: Without dead ends: 11312 [2021-11-19 15:50:27,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:27,675 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 151 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:27,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 2736 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-11-19 15:50:28,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11304. [2021-11-19 15:50:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11304 states, 9680 states have (on average 1.568698347107438) internal successors, (15185), 9695 states have internal predecessors, (15185), 1575 states have call successors, (1575), 44 states have call predecessors, (1575), 48 states have return successors, (1712), 1573 states have call predecessors, (1712), 1574 states have call successors, (1712) [2021-11-19 15:50:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 18472 transitions. [2021-11-19 15:50:28,636 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 18472 transitions. Word has length 192 [2021-11-19 15:50:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:28,637 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 18472 transitions. [2021-11-19 15:50:28,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 18472 transitions. [2021-11-19 15:50:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-19 15:50:28,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:28,668 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:28,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:28,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:28,884 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:28,884 INFO L85 PathProgramCache]: Analyzing trace with hash -612978825, now seen corresponding path program 1 times [2021-11-19 15:50:28,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:28,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739788594] [2021-11-19 15:50:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:28,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:28,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:28,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 15:50:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:29,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:29,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:30,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:30,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739788594] [2021-11-19 15:50:30,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739788594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:30,052 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:30,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:30,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419395090] [2021-11-19 15:50:30,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:30,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:30,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:30,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:30,054 INFO L87 Difference]: Start difference. First operand 11304 states and 18472 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:31,112 INFO L93 Difference]: Finished difference Result 30421 states and 49409 transitions. [2021-11-19 15:50:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:31,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 200 [2021-11-19 15:50:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:31,192 INFO L225 Difference]: With dead ends: 30421 [2021-11-19 15:50:31,192 INFO L226 Difference]: Without dead ends: 19314 [2021-11-19 15:50:31,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:31,223 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 151 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:31,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1690 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19314 states. [2021-11-19 15:50:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19314 to 19306. [2021-11-19 15:50:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19306 states, 16594 states have (on average 1.5360973845968422) internal successors, (25490), 16609 states have internal predecessors, (25490), 2663 states have call successors, (2663), 44 states have call predecessors, (2663), 48 states have return successors, (2928), 2661 states have call predecessors, (2928), 2662 states have call successors, (2928) [2021-11-19 15:50:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 31081 transitions. [2021-11-19 15:50:32,512 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 31081 transitions. Word has length 200 [2021-11-19 15:50:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:32,513 INFO L470 AbstractCegarLoop]: Abstraction has 19306 states and 31081 transitions. [2021-11-19 15:50:32,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 31081 transitions. [2021-11-19 15:50:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-19 15:50:32,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:32,533 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:32,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:32,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:32,747 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash 170246793, now seen corresponding path program 1 times [2021-11-19 15:50:32,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:32,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871261644] [2021-11-19 15:50:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:32,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:32,750 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:32,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:50:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:33,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:33,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:33,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:33,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:33,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871261644] [2021-11-19 15:50:33,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871261644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:33,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:33,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:33,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031485457] [2021-11-19 15:50:33,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:33,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:33,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:33,786 INFO L87 Difference]: Start difference. First operand 19306 states and 31081 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:35,943 INFO L93 Difference]: Finished difference Result 56082 states and 90554 transitions. [2021-11-19 15:50:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:35,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 194 [2021-11-19 15:50:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:36,089 INFO L225 Difference]: With dead ends: 56082 [2021-11-19 15:50:36,089 INFO L226 Difference]: Without dead ends: 36980 [2021-11-19 15:50:36,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:36,139 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 149 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:36,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36980 states. [2021-11-19 15:50:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36980 to 36972. [2021-11-19 15:50:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36972 states, 31956 states have (on average 1.5347039679559393) internal successors, (49043), 31971 states have internal predecessors, (49043), 4967 states have call successors, (4967), 44 states have call predecessors, (4967), 48 states have return successors, (5488), 4965 states have call predecessors, (5488), 4966 states have call successors, (5488) [2021-11-19 15:50:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36972 states to 36972 states and 59498 transitions. [2021-11-19 15:50:39,136 INFO L78 Accepts]: Start accepts. Automaton has 36972 states and 59498 transitions. Word has length 194 [2021-11-19 15:50:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:39,137 INFO L470 AbstractCegarLoop]: Abstraction has 36972 states and 59498 transitions. [2021-11-19 15:50:39,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:50:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36972 states and 59498 transitions. [2021-11-19 15:50:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-19 15:50:39,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:39,167 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:39,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:39,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:39,384 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1619790436, now seen corresponding path program 1 times [2021-11-19 15:50:39,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:39,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091410682] [2021-11-19 15:50:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:39,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:39,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:39,386 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:39,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 15:50:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:39,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:39,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:40,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:40,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:40,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091410682] [2021-11-19 15:50:40,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091410682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:40,330 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:40,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:40,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560148950] [2021-11-19 15:50:40,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:40,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:40,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:40,333 INFO L87 Difference]: Start difference. First operand 36972 states and 59498 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:44,206 INFO L93 Difference]: Finished difference Result 107534 states and 173746 transitions. [2021-11-19 15:50:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2021-11-19 15:50:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:44,536 INFO L225 Difference]: With dead ends: 107534 [2021-11-19 15:50:44,536 INFO L226 Difference]: Without dead ends: 70774 [2021-11-19 15:50:44,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:44,919 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 147 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:44,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1710 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70774 states. [2021-11-19 15:50:50,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70774 to 70766. [2021-11-19 15:50:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70766 states, 61398 states have (on average 1.5367927294048667) internal successors, (94356), 61413 states have internal predecessors, (94356), 9319 states have call successors, (9319), 44 states have call predecessors, (9319), 48 states have return successors, (10352), 9317 states have call predecessors, (10352), 9318 states have call successors, (10352) [2021-11-19 15:50:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70766 states to 70766 states and 114027 transitions. [2021-11-19 15:50:50,296 INFO L78 Accepts]: Start accepts. Automaton has 70766 states and 114027 transitions. Word has length 202 [2021-11-19 15:50:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:50,297 INFO L470 AbstractCegarLoop]: Abstraction has 70766 states and 114027 transitions. [2021-11-19 15:50:50,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 70766 states and 114027 transitions. [2021-11-19 15:50:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-19 15:50:50,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:50,324 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:50,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:50,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:50,540 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1754430279, now seen corresponding path program 1 times [2021-11-19 15:50:50,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:50,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862946860] [2021-11-19 15:50:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:50,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:50,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:50,542 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:50,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfbcdfd6-bf82-43f4-a241-ad6f2646c8c3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 15:50:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:51,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:51,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:51,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:50:51,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:51,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862946860] [2021-11-19 15:50:51,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862946860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:51,815 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:51,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:51,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051960166] [2021-11-19 15:50:51,816 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:51,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:51,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:51,817 INFO L87 Difference]: Start difference. First operand 70766 states and 114027 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:50:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:59,405 INFO L93 Difference]: Finished difference Result 137142 states and 221486 transitions. [2021-11-19 15:50:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:59,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 203 [2021-11-19 15:50:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:59,859 INFO L225 Difference]: With dead ends: 137142 [2021-11-19 15:50:59,859 INFO L226 Difference]: Without dead ends: 136818 [2021-11-19 15:50:59,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:59,906 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 145 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:59,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1704 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:51:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136818 states.