./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:39,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:39,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:39,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:39,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:39,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:39,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:39,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:39,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:39,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:39,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:39,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:39,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:39,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:39,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:39,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:39,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:39,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:39,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:39,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:39,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:39,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:39,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:39,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:39,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:39,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:39,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:39,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:39,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:39,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:39,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:39,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:39,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:39,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:39,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:39,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:39,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:39,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:39,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:39,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:39,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:39,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:44:40,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:40,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:40,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:40,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:40,010 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:40,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:40,011 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:40,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:44:40,011 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:40,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:40,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:44:40,013 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:44:40,014 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:40,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:44:40,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:44:40,015 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:44:40,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:40,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:44:40,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:44:40,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:44:40,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:40,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:40,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:40,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:40,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:40,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:44:40,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:40,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:40,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:40,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:40,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:40,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:40,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:40,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:40,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:40,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:44:40,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:44:40,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:40,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:40,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:40,025 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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-19 14:44:40,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:40,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:40,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:40,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:40,388 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:40,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-19 14:44:40,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/2b1906352/73815df2285c456fb407dba1dabb8805/FLAG97f0f492f [2021-11-19 14:44:41,171 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:41,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-19 14:44:41,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/2b1906352/73815df2285c456fb407dba1dabb8805/FLAG97f0f492f [2021-11-19 14:44:41,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/2b1906352/73815df2285c456fb407dba1dabb8805 [2021-11-19 14:44:41,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:41,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:41,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:41,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:41,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:41,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:41" (1/1) ... [2021-11-19 14:44:41,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6d446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:41, skipping insertion in model container [2021-11-19 14:44:41,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:41" (1/1) ... [2021-11-19 14:44:41,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:41,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:42,338 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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-19 14:44:42,348 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:42,367 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 14:44:42,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7052e825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:42, skipping insertion in model container [2021-11-19 14:44:42,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:42,369 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:44:42,372 INFO L158 Benchmark]: Toolchain (without parser) took 991.40ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 48.4MB in the beginning and 83.0MB in the end (delta: -34.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-11-19 14:44:42,374 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:44:42,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 987.91ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 48.2MB in the beginning and 83.0MB in the end (delta: -34.8MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-11-19 14:44:42,379 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 92.3MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 987.91ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 48.2MB in the beginning and 83.0MB in the end (delta: -34.8MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3118]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:45,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:45,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:45,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:45,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:45,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:45,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:45,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:45,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:45,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:45,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:45,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:45,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:45,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:45,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:45,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:45,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:45,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:45,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:45,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:45,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:45,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:45,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:45,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:45,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:45,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:45,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:45,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:45,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:45,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:45,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:45,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:45,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:45,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:45,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:45,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:45,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:45,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:45,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:45,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:45,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:45,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:44:45,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:45,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:45,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:45,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:45,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:45,246 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:45,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:45,247 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:45,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:45,248 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:45,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:45,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:44:45,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:44:45,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:45,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:45,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:45,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:45,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:45,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:44:45,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:44:45,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:44:45,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:45,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:45,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:45,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:45,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:44:45,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:45,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:45,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:45,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:45,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:45,256 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:44:45,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:44:45,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:45,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:45,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:45,258 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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-19 14:44:45,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:45,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:45,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:45,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:45,692 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:45,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-19 14:44:45,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/2a6cc3d63/4da97933f6a4471b80d3099e9efb0f75/FLAG2893a620f [2021-11-19 14:44:46,732 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:46,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-19 14:44:46,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/2a6cc3d63/4da97933f6a4471b80d3099e9efb0f75/FLAG2893a620f [2021-11-19 14:44:47,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/data/2a6cc3d63/4da97933f6a4471b80d3099e9efb0f75 [2021-11-19 14:44:47,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:47,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:47,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:47,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:47,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:47,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:47" (1/1) ... [2021-11-19 14:44:47,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e30e5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:47, skipping insertion in model container [2021-11-19 14:44:47,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:47" (1/1) ... [2021-11-19 14:44:47,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:47,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:48,262 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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-19 14:44:48,266 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:48,283 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:44:48,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:48,430 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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-19 14:44:48,431 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:48,439 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:44:48,611 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_38eca3a1-99ac-4011-bc26-d58d32a4cc41/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-19 14:44:48,619 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:48,696 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:44:48,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48 WrapperNode [2021-11-19 14:44:48,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:48,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:48,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:44:48,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:44:48,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:48,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:48,922 INFO L137 Inliner]: procedures = 153, calls = 280, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1225 [2021-11-19 14:44:48,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:48,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:44:48,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:44:48,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:44:48,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:48,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:48,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:48,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:49,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:49,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:49,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:49,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:44:49,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:44:49,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:44:49,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:44:49,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (1/1) ... [2021-11-19 14:44:49,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:49,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:44:49,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:44:49,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:44:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-19 14:44:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-19 14:44:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-19 14:44:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-19 14:44:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-19 14:44:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-19 14:44:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-19 14:44:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-19 14:44:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-19 14:44:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-19 14:44:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-19 14:44:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-19 14:44:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-19 14:44:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-19 14:44:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-19 14:44:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-19 14:44:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-19 14:44:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-19 14:44:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-19 14:44:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-19 14:44:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-19 14:44:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-19 14:44:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-19 14:44:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-19 14:44:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-19 14:44:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-19 14:44:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-19 14:44:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-19 14:44:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-19 14:44:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-19 14:44:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-19 14:44:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-19 14:44:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-19 14:44:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-19 14:44:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-19 14:44:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-19 14:44:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-19 14:44:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-19 14:44:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-19 14:44:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-19 14:44:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-19 14:44:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-19 14:44:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-19 14:44:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-19 14:44:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-19 14:44:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-19 14:44:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-19 14:44:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:44:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-19 14:44:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-19 14:44:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-19 14:44:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-19 14:44:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-19 14:44:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-19 14:44:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-19 14:44:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-19 14:44:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-19 14:44:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-19 14:44:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-19 14:44:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-19 14:44:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-19 14:44:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-19 14:44:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-19 14:44:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-19 14:44:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-19 14:44:49,224 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-19 14:44:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:44:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-19 14:44:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-19 14:44:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-19 14:44:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-19 14:44:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-19 14:44:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-19 14:44:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-19 14:44:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-19 14:44:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-19 14:44:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-19 14:44:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-19 14:44:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-19 14:44:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-19 14:44:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-19 14:44:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-19 14:44:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-19 14:44:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-19 14:44:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-19 14:44:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-19 14:44:49,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-19 14:44:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-19 14:44:49,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-19 14:44:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:44:49,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:44:49,636 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:44:49,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:44:51,037 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:44:51,054 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:44:51,055 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:44:51,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:51 BoogieIcfgContainer [2021-11-19 14:44:51,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:44:51,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:44:51,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:44:51,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:44:51,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:44:47" (1/3) ... [2021-11-19 14:44:51,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d13ea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:51, skipping insertion in model container [2021-11-19 14:44:51,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:48" (2/3) ... [2021-11-19 14:44:51,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d13ea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:51, skipping insertion in model container [2021-11-19 14:44:51,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:51" (3/3) ... [2021-11-19 14:44:51,069 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2021-11-19 14:44:51,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:44:51,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:44:51,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:44:51,154 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 14:44:51,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:44:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-19 14:44:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 14:44:51,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:51,241 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:51,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash -78162442, now seen corresponding path program 1 times [2021-11-19 14:44:51,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:51,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376506333] [2021-11-19 14:44:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:51,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:51,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:51,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:51,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:44:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:51,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:44:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:52,141 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 14:44:52,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:52,480 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 14:44:52,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:52,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376506333] [2021-11-19 14:44:52,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376506333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:52,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:52,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:44:52,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335897070] [2021-11-19 14:44:52,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:52,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:44:52,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:44:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:44:52,531 INFO L87 Difference]: Start difference. First operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 14:44:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:52,689 INFO L93 Difference]: Finished difference Result 931 states and 1369 transitions. [2021-11-19 14:44:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:44:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2021-11-19 14:44:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:52,730 INFO L225 Difference]: With dead ends: 931 [2021-11-19 14:44:52,731 INFO L226 Difference]: Without dead ends: 593 [2021-11-19 14:44:52,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:44:52,752 INFO L933 BasicCegarLoop]: 890 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, 890 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 14:44:52,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:44:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-19 14:44:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-11-19 14:44:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.5113636363636365) internal successors, (665), 459 states have internal predecessors, (665), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-19 14:44:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 882 transitions. [2021-11-19 14:44:52,885 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 882 transitions. Word has length 141 [2021-11-19 14:44:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:52,888 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 882 transitions. [2021-11-19 14:44:52,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 14:44:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 882 transitions. [2021-11-19 14:44:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-19 14:44:52,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:52,901 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:52,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:53,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:53,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1452679930, now seen corresponding path program 1 times [2021-11-19 14:44:53,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:53,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084845259] [2021-11-19 14:44:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:53,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:53,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:53,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:53,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:44:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:53,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:44:53,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:54,047 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 14:44:54,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:54,422 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 14:44:54,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:54,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084845259] [2021-11-19 14:44:54,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084845259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:54,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:54,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:44:54,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196995483] [2021-11-19 14:44:54,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:54,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:44:54,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:44:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:44:54,431 INFO L87 Difference]: Start difference. First operand 593 states and 882 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:44:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:54,646 INFO L93 Difference]: Finished difference Result 1150 states and 1708 transitions. [2021-11-19 14:44:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:44:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 142 [2021-11-19 14:44:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:54,661 INFO L225 Difference]: With dead ends: 1150 [2021-11-19 14:44:54,663 INFO L226 Difference]: Without dead ends: 593 [2021-11-19 14:44:54,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:44:54,670 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 3 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3509 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 14:44:54,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3509 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:44:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-19 14:44:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-11-19 14:44:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.4954545454545454) internal successors, (658), 459 states have internal predecessors, (658), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-19 14:44:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2021-11-19 14:44:54,778 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 142 [2021-11-19 14:44:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:54,779 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2021-11-19 14:44:54,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:44:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2021-11-19 14:44:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-19 14:44:54,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:54,792 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:54,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:54,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:54,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:54,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:54,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2113763488, now seen corresponding path program 1 times [2021-11-19 14:44:54,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:54,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997011403] [2021-11-19 14:44:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:54,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:54,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:54,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:55,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:44:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:55,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:44:55,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 14:44:55,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:56,277 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 14:44:56,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:56,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997011403] [2021-11-19 14:44:56,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997011403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:56,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:56,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:44:56,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537874863] [2021-11-19 14:44:56,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:56,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:44:56,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:56,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:44:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:44:56,299 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 14:44:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:56,859 INFO L93 Difference]: Finished difference Result 1154 states and 1716 transitions. [2021-11-19 14:44:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:44:56,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 154 [2021-11-19 14:44:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:56,870 INFO L225 Difference]: With dead ends: 1154 [2021-11-19 14:44:56,870 INFO L226 Difference]: Without dead ends: 594 [2021-11-19 14:44:56,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:44:56,877 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 1473 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:56,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 890 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:44:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-19 14:44:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-19 14:44:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 442 states have (on average 1.4864253393665159) internal successors, (657), 459 states have internal predecessors, (657), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-19 14:44:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 870 transitions. [2021-11-19 14:44:56,946 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 870 transitions. Word has length 154 [2021-11-19 14:44:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:56,947 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 870 transitions. [2021-11-19 14:44:56,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 14:44:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 870 transitions. [2021-11-19 14:44:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 14:44:56,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:56,954 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:56,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:57,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:57,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1201992432, now seen corresponding path program 1 times [2021-11-19 14:44:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:57,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265749885] [2021-11-19 14:44:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:57,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:57,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:57,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:57,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:44:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:57,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:44:57,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:57,925 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 14:44:57,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:58,248 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 14:44:58,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:58,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265749885] [2021-11-19 14:44:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265749885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:58,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:58,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:44:58,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77102579] [2021-11-19 14:44:58,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:58,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:44:58,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:44:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:44:58,255 INFO L87 Difference]: Start difference. First operand 594 states and 870 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:44:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:58,396 INFO L93 Difference]: Finished difference Result 1694 states and 2517 transitions. [2021-11-19 14:44:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:44:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 148 [2021-11-19 14:44:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:58,411 INFO L225 Difference]: With dead ends: 1694 [2021-11-19 14:44:58,411 INFO L226 Difference]: Without dead ends: 1134 [2021-11-19 14:44:58,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:44:58,424 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 826 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:58,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1810 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:44:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-19 14:44:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1132. [2021-11-19 14:44:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 845 states have (on average 1.493491124260355) internal successors, (1262), 875 states have internal predecessors, (1262), 199 states have call successors, (199), 87 states have call predecessors, (199), 87 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2021-11-19 14:44:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1671 transitions. [2021-11-19 14:44:58,558 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1671 transitions. Word has length 148 [2021-11-19 14:44:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:58,559 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1671 transitions. [2021-11-19 14:44:58,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:44:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1671 transitions. [2021-11-19 14:44:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 14:44:58,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:58,567 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:58,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:58,786 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1923519357, now seen corresponding path program 1 times [2021-11-19 14:44:58,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:58,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951936278] [2021-11-19 14:44:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:58,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:58,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:58,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:44:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:59,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:44:59,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-19 14:44:59,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:59,920 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 14:44:59,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:59,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951936278] [2021-11-19 14:44:59,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951936278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:59,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:59,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:44:59,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163633057] [2021-11-19 14:44:59,922 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:59,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:44:59,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:44:59,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:44:59,924 INFO L87 Difference]: Start difference. First operand 1132 states and 1671 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-19 14:45:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:00,017 INFO L93 Difference]: Finished difference Result 1134 states and 1672 transitions. [2021-11-19 14:45:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 156 [2021-11-19 14:45:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:00,024 INFO L225 Difference]: With dead ends: 1134 [2021-11-19 14:45:00,024 INFO L226 Difference]: Without dead ends: 595 [2021-11-19 14:45:00,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:00,028 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 766 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:00,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 893 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-19 14:45:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2021-11-19 14:45:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 444 states have (on average 1.4752252252252251) internal successors, (655), 459 states have internal predecessors, (655), 105 states have call successors, (105), 45 states have call predecessors, (105), 45 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-19 14:45:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 864 transitions. [2021-11-19 14:45:00,076 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 864 transitions. Word has length 156 [2021-11-19 14:45:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:00,077 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 864 transitions. [2021-11-19 14:45:00,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-19 14:45:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 864 transitions. [2021-11-19 14:45:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 14:45:00,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:00,082 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:00,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:00,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:00,296 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:00,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1342249904, now seen corresponding path program 1 times [2021-11-19 14:45:00,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:00,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211222154] [2021-11-19 14:45:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:00,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:00,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:00,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:45:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:00,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:00,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 14:45:01,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-19 14:45:01,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:01,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211222154] [2021-11-19 14:45:01,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211222154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:01,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:01,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:01,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85066145] [2021-11-19 14:45:01,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:01,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:01,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:01,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:01,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:01,358 INFO L87 Difference]: Start difference. First operand 595 states and 864 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:45:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:01,470 INFO L93 Difference]: Finished difference Result 1144 states and 1668 transitions. [2021-11-19 14:45:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:01,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 165 [2021-11-19 14:45:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:01,477 INFO L225 Difference]: With dead ends: 1144 [2021-11-19 14:45:01,477 INFO L226 Difference]: Without dead ends: 598 [2021-11-19 14:45:01,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:01,484 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 799 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:01,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 878 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-19 14:45:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 592. [2021-11-19 14:45:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 444 states have (on average 1.4504504504504505) internal successors, (644), 454 states have internal predecessors, (644), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-19 14:45:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 847 transitions. [2021-11-19 14:45:01,535 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 847 transitions. Word has length 165 [2021-11-19 14:45:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:01,535 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 847 transitions. [2021-11-19 14:45:01,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:45:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 847 transitions. [2021-11-19 14:45:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-19 14:45:01,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:01,542 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:01,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:01,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:01,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1134982874, now seen corresponding path program 1 times [2021-11-19 14:45:01,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:01,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852802097] [2021-11-19 14:45:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:01,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:01,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:01,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:45:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:45:02,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 14:45:02,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-19 14:45:03,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:03,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852802097] [2021-11-19 14:45:03,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852802097] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:03,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:03,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-19 14:45:03,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845116852] [2021-11-19 14:45:03,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:03,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:45:03,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:45:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:45:03,275 INFO L87 Difference]: Start difference. First operand 592 states and 847 transitions. Second operand has 8 states, 6 states have (on average 17.333333333333332) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:45:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:03,556 INFO L93 Difference]: Finished difference Result 1128 states and 1629 transitions. [2021-11-19 14:45:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:45:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 17.333333333333332) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 183 [2021-11-19 14:45:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:03,563 INFO L225 Difference]: With dead ends: 1128 [2021-11-19 14:45:03,563 INFO L226 Difference]: Without dead ends: 594 [2021-11-19 14:45:03,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:45:03,567 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 363 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:03,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5415 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:45:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-19 14:45:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-19 14:45:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 445 states have (on average 1.449438202247191) internal successors, (645), 456 states have internal predecessors, (645), 102 states have call successors, (102), 45 states have call predecessors, (102), 46 states have return successors, (103), 100 states have call predecessors, (103), 101 states have call successors, (103) [2021-11-19 14:45:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 850 transitions. [2021-11-19 14:45:03,621 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 850 transitions. Word has length 183 [2021-11-19 14:45:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:03,623 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 850 transitions. [2021-11-19 14:45:03,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 17.333333333333332) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:45:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 850 transitions. [2021-11-19 14:45:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-19 14:45:03,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:03,628 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:03,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:03,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:03,846 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:03,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash 580115698, now seen corresponding path program 1 times [2021-11-19 14:45:03,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:03,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079374488] [2021-11-19 14:45:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:03,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:03,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:03,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:03,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:45:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:04,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:04,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 14:45:04,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-19 14:45:05,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:05,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079374488] [2021-11-19 14:45:05,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079374488] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:05,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:05,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:45:05,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173610171] [2021-11-19 14:45:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:05,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:45:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:45:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:45:05,179 INFO L87 Difference]: Start difference. First operand 594 states and 850 transitions. Second operand has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 14:45:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:05,389 INFO L93 Difference]: Finished difference Result 1129 states and 1632 transitions. [2021-11-19 14:45:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 184 [2021-11-19 14:45:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:05,396 INFO L225 Difference]: With dead ends: 1129 [2021-11-19 14:45:05,396 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 14:45:05,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:45:05,400 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 361 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:05,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3751 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 14:45:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 14:45:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4484304932735426) internal successors, (646), 458 states have internal predecessors, (646), 102 states have call successors, (102), 45 states have call predecessors, (102), 47 states have return successors, (107), 100 states have call predecessors, (107), 101 states have call successors, (107) [2021-11-19 14:45:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 855 transitions. [2021-11-19 14:45:05,451 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 855 transitions. Word has length 184 [2021-11-19 14:45:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 855 transitions. [2021-11-19 14:45:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 14:45:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 855 transitions. [2021-11-19 14:45:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-19 14:45:05,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:05,457 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:05,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:05,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:05,678 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1508008804, now seen corresponding path program 1 times [2021-11-19 14:45:05,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:05,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630451759] [2021-11-19 14:45:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:05,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:05,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:05,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:05,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:45:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:06,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:45:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 14:45:06,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:07,126 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 14:45:07,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:07,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630451759] [2021-11-19 14:45:07,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630451759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:07,126 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:07,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 14:45:07,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401888150] [2021-11-19 14:45:07,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:07,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:45:07,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:45:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:45:07,129 INFO L87 Difference]: Start difference. First operand 596 states and 855 transitions. Second operand has 12 states, 8 states have (on average 15.75) internal successors, (126), 12 states have internal predecessors, (126), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-19 14:45:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:07,440 INFO L93 Difference]: Finished difference Result 1117 states and 1618 transitions. [2021-11-19 14:45:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:45:07,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 15.75) internal successors, (126), 12 states have internal predecessors, (126), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) Word has length 178 [2021-11-19 14:45:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:07,447 INFO L225 Difference]: With dead ends: 1117 [2021-11-19 14:45:07,447 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 14:45:07,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:45:07,451 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 367 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 5875 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:07,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 5875 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:45:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 14:45:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 14:45:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 446 states have (on average 1.4484304932735426) internal successors, (646), 458 states have internal predecessors, (646), 102 states have call successors, (102), 45 states have call predecessors, (102), 47 states have return successors, (106), 100 states have call predecessors, (106), 101 states have call successors, (106) [2021-11-19 14:45:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 854 transitions. [2021-11-19 14:45:07,519 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 854 transitions. Word has length 178 [2021-11-19 14:45:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:07,521 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 854 transitions. [2021-11-19 14:45:07,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 15.75) internal successors, (126), 12 states have internal predecessors, (126), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-19 14:45:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 854 transitions. [2021-11-19 14:45:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-19 14:45:07,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:07,526 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, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:07,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:07,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,750 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1481477928, now seen corresponding path program 2 times [2021-11-19 14:45:07,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:07,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959993720] [2021-11-19 14:45:07,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:45:07,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:07,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:07,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:45:08,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:45:08,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:45:08,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:08,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 14:45:08,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 14:45:09,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:09,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959993720] [2021-11-19 14:45:09,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959993720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:09,050 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:09,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:45:09,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710438057] [2021-11-19 14:45:09,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:09,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:45:09,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:09,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:45:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:45:09,053 INFO L87 Difference]: Start difference. First operand 596 states and 854 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 8 states have internal predecessors, (103), 1 states have call successors, (30), 1 states have call predecessors, (30), 5 states have return successors, (26), 5 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-19 14:45:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:09,194 INFO L93 Difference]: Finished difference Result 627 states and 902 transitions. [2021-11-19 14:45:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:45:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 8 states have internal predecessors, (103), 1 states have call successors, (30), 1 states have call predecessors, (30), 5 states have return successors, (26), 5 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2021-11-19 14:45:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:09,201 INFO L225 Difference]: With dead ends: 627 [2021-11-19 14:45:09,201 INFO L226 Difference]: Without dead ends: 625 [2021-11-19 14:45:09,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:45:09,203 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 47 mSDsluCounter, 6861 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 7730 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:09,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 7730 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-19 14:45:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 600. [2021-11-19 14:45:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 449 states have (on average 1.44543429844098) internal successors, (649), 461 states have internal predecessors, (649), 102 states have call successors, (102), 45 states have call predecessors, (102), 48 states have return successors, (109), 101 states have call predecessors, (109), 101 states have call successors, (109) [2021-11-19 14:45:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 860 transitions. [2021-11-19 14:45:09,255 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 860 transitions. Word has length 179 [2021-11-19 14:45:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:09,257 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 860 transitions. [2021-11-19 14:45:09,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 8 states have internal predecessors, (103), 1 states have call successors, (30), 1 states have call predecessors, (30), 5 states have return successors, (26), 5 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-19 14:45:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 860 transitions. [2021-11-19 14:45:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-19 14:45:09,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:09,262 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:09,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:09,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:09,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1647991423, now seen corresponding path program 1 times [2021-11-19 14:45:09,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:09,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759841796] [2021-11-19 14:45:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:09,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:09,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:09,480 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:09,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:45:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:09,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:45:09,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:10,323 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 14:45:10,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:10,900 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 14:45:10,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:10,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759841796] [2021-11-19 14:45:10,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759841796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:10,901 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:10,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 14:45:10,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812114615] [2021-11-19 14:45:10,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:10,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:45:10,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:10,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:45:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:45:10,903 INFO L87 Difference]: Start difference. First operand 600 states and 860 transitions. Second operand has 12 states, 8 states have (on average 16.75) internal successors, (134), 12 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-19 14:45:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:11,194 INFO L93 Difference]: Finished difference Result 1127 states and 1633 transitions. [2021-11-19 14:45:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:45:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 16.75) internal successors, (134), 12 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) Word has length 182 [2021-11-19 14:45:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:11,201 INFO L225 Difference]: With dead ends: 1127 [2021-11-19 14:45:11,201 INFO L226 Difference]: Without dead ends: 602 [2021-11-19 14:45:11,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:45:11,205 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 535 mSDsluCounter, 5241 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 6074 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:11,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 6074 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:45:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-19 14:45:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-19 14:45:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 450 states have (on average 1.4444444444444444) internal successors, (650), 463 states have internal predecessors, (650), 102 states have call successors, (102), 45 states have call predecessors, (102), 49 states have return successors, (111), 101 states have call predecessors, (111), 101 states have call successors, (111) [2021-11-19 14:45:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 863 transitions. [2021-11-19 14:45:11,253 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 863 transitions. Word has length 182 [2021-11-19 14:45:11,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:11,254 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 863 transitions. [2021-11-19 14:45:11,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 16.75) internal successors, (134), 12 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 3 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-19 14:45:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 863 transitions. [2021-11-19 14:45:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-19 14:45:11,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:11,260 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:11,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:11,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:11,476 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1070379730, now seen corresponding path program 1 times [2021-11-19 14:45:11,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:11,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418869570] [2021-11-19 14:45:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:11,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:11,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:11,479 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:11,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:45:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:11,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:12,239 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 14:45:12,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:12,716 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 14:45:12,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:12,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418869570] [2021-11-19 14:45:12,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418869570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:12,717 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:12,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:45:12,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413524715] [2021-11-19 14:45:12,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:45:12,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:45:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:45:12,721 INFO L87 Difference]: Start difference. First operand 602 states and 863 transitions. Second operand has 9 states, 7 states have (on average 18.571428571428573) internal successors, (130), 9 states have internal predecessors, (130), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 14:45:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:12,989 INFO L93 Difference]: Finished difference Result 1124 states and 1627 transitions. [2021-11-19 14:45:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 18.571428571428573) internal successors, (130), 9 states have internal predecessors, (130), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 183 [2021-11-19 14:45:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:12,998 INFO L225 Difference]: With dead ends: 1124 [2021-11-19 14:45:12,998 INFO L226 Difference]: Without dead ends: 602 [2021-11-19 14:45:13,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:45:13,002 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 355 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 5862 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:13,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 5862 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:45:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-19 14:45:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-19 14:45:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 450 states have (on average 1.4444444444444444) internal successors, (650), 463 states have internal predecessors, (650), 102 states have call successors, (102), 45 states have call predecessors, (102), 49 states have return successors, (110), 101 states have call predecessors, (110), 101 states have call successors, (110) [2021-11-19 14:45:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 862 transitions. [2021-11-19 14:45:13,049 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 862 transitions. Word has length 183 [2021-11-19 14:45:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:13,052 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 862 transitions. [2021-11-19 14:45:13,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 18.571428571428573) internal successors, (130), 9 states have internal predecessors, (130), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 14:45:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 862 transitions. [2021-11-19 14:45:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-19 14:45:13,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:13,057 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:13,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:13,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:13,275 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash -718561021, now seen corresponding path program 2 times [2021-11-19 14:45:13,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:13,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239338972] [2021-11-19 14:45:13,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:45:13,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:13,278 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:13,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:45:13,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:45:13,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:45:13,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:13,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:14,051 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 14:45:14,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:14,515 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 14:45:14,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:14,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239338972] [2021-11-19 14:45:14,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239338972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:14,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:14,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2021-11-19 14:45:14,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341187768] [2021-11-19 14:45:14,516 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:14,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:14,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:14,517 INFO L87 Difference]: Start difference. First operand 602 states and 862 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:45:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:15,554 INFO L93 Difference]: Finished difference Result 1709 states and 2490 transitions. [2021-11-19 14:45:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:15,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 184 [2021-11-19 14:45:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:15,561 INFO L225 Difference]: With dead ends: 1709 [2021-11-19 14:45:15,561 INFO L226 Difference]: Without dead ends: 597 [2021-11-19 14:45:15,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:15,567 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 1464 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:15,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2844 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:45:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-19 14:45:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-19 14:45:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 448 states have (on average 1.4352678571428572) internal successors, (643), 459 states have internal predecessors, (643), 99 states have call successors, (99), 46 states have call predecessors, (99), 49 states have return successors, (104), 97 states have call predecessors, (104), 98 states have call successors, (104) [2021-11-19 14:45:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 846 transitions. [2021-11-19 14:45:15,615 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 846 transitions. Word has length 184 [2021-11-19 14:45:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:15,615 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 846 transitions. [2021-11-19 14:45:15,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:45:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 846 transitions. [2021-11-19 14:45:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-19 14:45:15,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:15,621 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:15,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:15,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:15,845 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2028262496, now seen corresponding path program 1 times [2021-11-19 14:45:15,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:15,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241907169] [2021-11-19 14:45:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:15,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:15,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:15,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:15,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:45:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:16,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:16,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 14:45:16,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:17,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:17,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241907169] [2021-11-19 14:45:17,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241907169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:17,402 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:17,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:17,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403361330] [2021-11-19 14:45:17,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:17,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:17,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:17,404 INFO L87 Difference]: Start difference. First operand 597 states and 846 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 14:45:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:17,498 INFO L93 Difference]: Finished difference Result 1451 states and 2063 transitions. [2021-11-19 14:45:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:17,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 214 [2021-11-19 14:45:17,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:17,509 INFO L225 Difference]: With dead ends: 1451 [2021-11-19 14:45:17,509 INFO L226 Difference]: Without dead ends: 1142 [2021-11-19 14:45:17,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:17,513 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 682 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:17,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1720 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-11-19 14:45:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2021-11-19 14:45:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 863 states have (on average 1.4461181923522595) internal successors, (1248), 882 states have internal predecessors, (1248), 182 states have call successors, (182), 88 states have call predecessors, (182), 94 states have return successors, (200), 178 states have call predecessors, (200), 180 states have call successors, (200) [2021-11-19 14:45:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1630 transitions. [2021-11-19 14:45:17,627 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1630 transitions. Word has length 214 [2021-11-19 14:45:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:17,628 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1630 transitions. [2021-11-19 14:45:17,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 14:45:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1630 transitions. [2021-11-19 14:45:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-19 14:45:17,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:17,636 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:17,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:17,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:17,855 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -531117880, now seen corresponding path program 1 times [2021-11-19 14:45:17,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:17,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907744482] [2021-11-19 14:45:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:17,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:17,858 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:17,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:45:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:18,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:18,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 14:45:18,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 14:45:19,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:19,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907744482] [2021-11-19 14:45:19,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907744482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:19,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:19,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:19,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445621280] [2021-11-19 14:45:19,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:19,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:19,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:19,335 INFO L87 Difference]: Start difference. First operand 1140 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-19 14:45:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:19,403 INFO L93 Difference]: Finished difference Result 1142 states and 1631 transitions. [2021-11-19 14:45:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:19,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 200 [2021-11-19 14:45:19,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:19,415 INFO L225 Difference]: With dead ends: 1142 [2021-11-19 14:45:19,416 INFO L226 Difference]: Without dead ends: 596 [2021-11-19 14:45:19,420 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 14:45:19,421 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 679 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 854 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 14:45:19,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 854 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-19 14:45:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-19 14:45:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 448 states have (on average 1.4308035714285714) internal successors, (641), 458 states have internal predecessors, (641), 98 states have call successors, (98), 46 states have call predecessors, (98), 49 states have return successors, (103), 96 states have call predecessors, (103), 97 states have call successors, (103) [2021-11-19 14:45:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 842 transitions. [2021-11-19 14:45:19,469 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 842 transitions. Word has length 200 [2021-11-19 14:45:19,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:19,470 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 842 transitions. [2021-11-19 14:45:19,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-19 14:45:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 842 transitions. [2021-11-19 14:45:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 14:45:19,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:19,476 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:19,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:19,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:19,695 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1114603658, now seen corresponding path program 1 times [2021-11-19 14:45:19,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:19,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403325565] [2021-11-19 14:45:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:19,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:19,698 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:19,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:45:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:20,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 14:45:20,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 14:45:21,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:21,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403325565] [2021-11-19 14:45:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403325565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:21,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:21,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:45:21,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952393136] [2021-11-19 14:45:21,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:21,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:45:21,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:45:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:45:21,067 INFO L87 Difference]: Start difference. First operand 596 states and 842 transitions. Second operand has 9 states, 7 states have (on average 22.285714285714285) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-19 14:45:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:21,305 INFO L93 Difference]: Finished difference Result 1111 states and 1593 transitions. [2021-11-19 14:45:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:21,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 22.285714285714285) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 215 [2021-11-19 14:45:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:21,312 INFO L225 Difference]: With dead ends: 1111 [2021-11-19 14:45:21,312 INFO L226 Difference]: Without dead ends: 598 [2021-11-19 14:45:21,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:45:21,315 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 532 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:21,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 3498 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:45:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-19 14:45:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-19 14:45:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 449 states have (on average 1.4298440979955456) internal successors, (642), 460 states have internal predecessors, (642), 98 states have call successors, (98), 46 states have call predecessors, (98), 50 states have return successors, (107), 96 states have call predecessors, (107), 97 states have call successors, (107) [2021-11-19 14:45:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 847 transitions. [2021-11-19 14:45:21,358 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 847 transitions. Word has length 215 [2021-11-19 14:45:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:21,358 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 847 transitions. [2021-11-19 14:45:21,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 22.285714285714285) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-19 14:45:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 847 transitions. [2021-11-19 14:45:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 14:45:21,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:21,364 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:21,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:21,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:21,582 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1736487616, now seen corresponding path program 1 times [2021-11-19 14:45:21,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:21,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55871930] [2021-11-19 14:45:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:21,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:21,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:21,584 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:21,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:45:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:21,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:21,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:22,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:22,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:22,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55871930] [2021-11-19 14:45:22,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55871930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:22,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:22,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:22,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923881835] [2021-11-19 14:45:22,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:22,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:22,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:22,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:22,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:22,779 INFO L87 Difference]: Start difference. First operand 598 states and 847 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:22,912 INFO L93 Difference]: Finished difference Result 1043 states and 1488 transitions. [2021-11-19 14:45:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 216 [2021-11-19 14:45:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:22,920 INFO L225 Difference]: With dead ends: 1043 [2021-11-19 14:45:22,920 INFO L226 Difference]: Without dead ends: 727 [2021-11-19 14:45:22,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 428 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 14:45:22,923 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 168 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:22,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2507 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-19 14:45:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 719. [2021-11-19 14:45:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 553 states have (on average 1.4593128390596746) internal successors, (807), 564 states have internal predecessors, (807), 115 states have call successors, (115), 46 states have call predecessors, (115), 50 states have return successors, (126), 113 states have call predecessors, (126), 114 states have call successors, (126) [2021-11-19 14:45:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1048 transitions. [2021-11-19 14:45:22,977 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1048 transitions. Word has length 216 [2021-11-19 14:45:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:22,977 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1048 transitions. [2021-11-19 14:45:22,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1048 transitions. [2021-11-19 14:45:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 14:45:22,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:22,984 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:23,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:23,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:23,202 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1908313777, now seen corresponding path program 1 times [2021-11-19 14:45:23,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:23,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397884730] [2021-11-19 14:45:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:23,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:23,204 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:23,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:45:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:23,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:23,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:24,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:24,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:24,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397884730] [2021-11-19 14:45:24,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397884730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:24,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:24,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:24,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551095590] [2021-11-19 14:45:24,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:24,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:24,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:24,452 INFO L87 Difference]: Start difference. First operand 719 states and 1048 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:24,535 INFO L93 Difference]: Finished difference Result 1419 states and 2098 transitions. [2021-11-19 14:45:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:24,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 221 [2021-11-19 14:45:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:24,544 INFO L225 Difference]: With dead ends: 1419 [2021-11-19 14:45:24,545 INFO L226 Difference]: Without dead ends: 819 [2021-11-19 14:45:24,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:24,549 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 165 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1623 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 14:45:24,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1623 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-19 14:45:24,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2021-11-19 14:45:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 631 states have (on average 1.4675118858954042) internal successors, (926), 642 states have internal predecessors, (926), 129 states have call successors, (129), 46 states have call predecessors, (129), 50 states have return successors, (142), 127 states have call predecessors, (142), 128 states have call successors, (142) [2021-11-19 14:45:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1197 transitions. [2021-11-19 14:45:24,618 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1197 transitions. Word has length 221 [2021-11-19 14:45:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:24,620 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1197 transitions. [2021-11-19 14:45:24,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1197 transitions. [2021-11-19 14:45:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-19 14:45:24,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:24,626 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:24,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:24,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:24,846 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash 708575518, now seen corresponding path program 1 times [2021-11-19 14:45:24,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:24,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853150147] [2021-11-19 14:45:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:24,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:24,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:24,848 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:24,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:45:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:25,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:25,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:25,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:26,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:26,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853150147] [2021-11-19 14:45:26,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853150147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:26,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:26,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:26,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678510859] [2021-11-19 14:45:26,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:26,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:26,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:26,045 INFO L87 Difference]: Start difference. First operand 811 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:26,139 INFO L93 Difference]: Finished difference Result 1695 states and 2553 transitions. [2021-11-19 14:45:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 229 [2021-11-19 14:45:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:26,149 INFO L225 Difference]: With dead ends: 1695 [2021-11-19 14:45:26,150 INFO L226 Difference]: Without dead ends: 1014 [2021-11-19 14:45:26,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:26,154 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 163 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1672 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 14:45:26,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:26,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-19 14:45:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1006. [2021-11-19 14:45:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 795 states have (on average 1.4855345911949684) internal successors, (1181), 806 states have internal predecessors, (1181), 160 states have call successors, (160), 46 states have call predecessors, (160), 50 states have return successors, (177), 158 states have call predecessors, (177), 159 states have call successors, (177) [2021-11-19 14:45:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1518 transitions. [2021-11-19 14:45:26,268 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1518 transitions. Word has length 229 [2021-11-19 14:45:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:26,269 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1518 transitions. [2021-11-19 14:45:26,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1518 transitions. [2021-11-19 14:45:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-19 14:45:26,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:26,278 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:26,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:26,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:26,503 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1131419899, now seen corresponding path program 1 times [2021-11-19 14:45:26,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:26,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511318740] [2021-11-19 14:45:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:26,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:26,507 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:26,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:45:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:26,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:26,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:27,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:27,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:27,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511318740] [2021-11-19 14:45:27,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511318740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:27,620 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:27,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:27,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785866865] [2021-11-19 14:45:27,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:27,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:27,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:27,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:27,622 INFO L87 Difference]: Start difference. First operand 1006 states and 1518 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:27,736 INFO L93 Difference]: Finished difference Result 2266 states and 3493 transitions. [2021-11-19 14:45:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 223 [2021-11-19 14:45:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:27,749 INFO L225 Difference]: With dead ends: 2266 [2021-11-19 14:45:27,750 INFO L226 Difference]: Without dead ends: 1398 [2021-11-19 14:45:27,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:27,755 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 161 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1662 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 14:45:27,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1662 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-19 14:45:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1390. [2021-11-19 14:45:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1121 states have (on average 1.511150758251561) internal successors, (1694), 1132 states have internal predecessors, (1694), 218 states have call successors, (218), 46 states have call predecessors, (218), 50 states have return successors, (235), 216 states have call predecessors, (235), 217 states have call successors, (235) [2021-11-19 14:45:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2147 transitions. [2021-11-19 14:45:27,915 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2147 transitions. Word has length 223 [2021-11-19 14:45:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:27,915 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2147 transitions. [2021-11-19 14:45:27,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2147 transitions. [2021-11-19 14:45:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-19 14:45:27,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:27,926 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:27,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:28,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:28,147 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -904506340, now seen corresponding path program 1 times [2021-11-19 14:45:28,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:28,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759155956] [2021-11-19 14:45:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:28,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:28,150 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:28,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:45:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:28,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:28,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:28,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:29,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:29,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759155956] [2021-11-19 14:45:29,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759155956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:29,316 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:29,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:29,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400378482] [2021-11-19 14:45:29,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:29,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:29,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:29,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:29,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:29,319 INFO L87 Difference]: Start difference. First operand 1390 states and 2147 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:29,493 INFO L93 Difference]: Finished difference Result 3361 states and 5304 transitions. [2021-11-19 14:45:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:29,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 224 [2021-11-19 14:45:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:29,512 INFO L225 Difference]: With dead ends: 3361 [2021-11-19 14:45:29,513 INFO L226 Difference]: Without dead ends: 2120 [2021-11-19 14:45:29,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:29,520 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 159 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1663 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 14:45:29,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1663 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-11-19 14:45:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2112. [2021-11-19 14:45:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1747 states have (on average 1.5380652547223812) internal successors, (2687), 1758 states have internal predecessors, (2687), 314 states have call successors, (314), 46 states have call predecessors, (314), 50 states have return successors, (339), 312 states have call predecessors, (339), 313 states have call successors, (339) [2021-11-19 14:45:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3340 transitions. [2021-11-19 14:45:29,704 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3340 transitions. Word has length 224 [2021-11-19 14:45:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:29,705 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 3340 transitions. [2021-11-19 14:45:29,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3340 transitions. [2021-11-19 14:45:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-19 14:45:29,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:29,719 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:29,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:29,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:29,937 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash 611639683, now seen corresponding path program 1 times [2021-11-19 14:45:29,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:29,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228516189] [2021-11-19 14:45:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:29,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:29,941 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:29,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:45:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:30,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:30,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:30,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:31,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:31,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228516189] [2021-11-19 14:45:31,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228516189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:31,213 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:31,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:31,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341245703] [2021-11-19 14:45:31,214 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:31,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:31,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:31,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:31,216 INFO L87 Difference]: Start difference. First operand 2112 states and 3340 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:31,482 INFO L93 Difference]: Finished difference Result 5450 states and 8771 transitions. [2021-11-19 14:45:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:31,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 225 [2021-11-19 14:45:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:31,514 INFO L225 Difference]: With dead ends: 5450 [2021-11-19 14:45:31,515 INFO L226 Difference]: Without dead ends: 3498 [2021-11-19 14:45:31,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:31,526 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 157 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1656 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 14:45:31,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1656 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2021-11-19 14:45:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3490. [2021-11-19 14:45:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2957 states have (on average 1.5610415962123774) internal successors, (4616), 2968 states have internal predecessors, (4616), 482 states have call successors, (482), 46 states have call predecessors, (482), 50 states have return successors, (523), 480 states have call predecessors, (523), 481 states have call successors, (523) [2021-11-19 14:45:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5621 transitions. [2021-11-19 14:45:31,883 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5621 transitions. Word has length 225 [2021-11-19 14:45:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:31,884 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 5621 transitions. [2021-11-19 14:45:31,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5621 transitions. [2021-11-19 14:45:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-19 14:45:31,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:31,904 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:31,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:32,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:32,123 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -816816606, now seen corresponding path program 1 times [2021-11-19 14:45:32,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:32,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940101941] [2021-11-19 14:45:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:32,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:32,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:32,126 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:45:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:32,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:32,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:32,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:33,276 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:33,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940101941] [2021-11-19 14:45:33,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940101941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:33,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:33,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:33,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144047066] [2021-11-19 14:45:33,277 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:33,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:33,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:33,278 INFO L87 Difference]: Start difference. First operand 3490 states and 5621 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:33,838 INFO L93 Difference]: Finished difference Result 9443 states and 15373 transitions. [2021-11-19 14:45:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:33,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 233 [2021-11-19 14:45:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:33,918 INFO L225 Difference]: With dead ends: 9443 [2021-11-19 14:45:33,919 INFO L226 Difference]: Without dead ends: 6124 [2021-11-19 14:45:33,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 463 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 14:45:33,934 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 155 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1673 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 14:45:33,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1673 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-11-19 14:45:34,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 6116. [2021-11-19 14:45:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 5199 states have (on average 1.5651086747451433) internal successors, (8137), 5210 states have internal predecessors, (8137), 866 states have call successors, (866), 46 states have call predecessors, (866), 50 states have return successors, (939), 864 states have call predecessors, (939), 865 states have call successors, (939) [2021-11-19 14:45:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 9942 transitions. [2021-11-19 14:45:34,568 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 9942 transitions. Word has length 233 [2021-11-19 14:45:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:34,569 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 9942 transitions. [2021-11-19 14:45:34,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 9942 transitions. [2021-11-19 14:45:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-19 14:45:34,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:34,605 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:34,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:34,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:34,820 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:34,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1399073198, now seen corresponding path program 1 times [2021-11-19 14:45:34,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:34,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503045185] [2021-11-19 14:45:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:34,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:34,824 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:34,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:45:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:35,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:35,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:35,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:36,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:36,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503045185] [2021-11-19 14:45:36,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503045185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:36,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:36,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:36,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294397631] [2021-11-19 14:45:36,032 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:36,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:36,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:36,033 INFO L87 Difference]: Start difference. First operand 6116 states and 9942 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:36,926 INFO L93 Difference]: Finished difference Result 17247 states and 28293 transitions. [2021-11-19 14:45:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 227 [2021-11-19 14:45:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:36,979 INFO L225 Difference]: With dead ends: 17247 [2021-11-19 14:45:36,979 INFO L226 Difference]: Without dead ends: 11310 [2021-11-19 14:45:37,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 451 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 14:45:37,005 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 153 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1661 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 14:45:37,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1661 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-11-19 14:45:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11302. [2021-11-19 14:45:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11302 states, 9681 states have (on average 1.5744241297386634) internal successors, (15242), 9692 states have internal predecessors, (15242), 1570 states have call successors, (1570), 46 states have call predecessors, (1570), 50 states have return successors, (1707), 1568 states have call predecessors, (1707), 1569 states have call successors, (1707) [2021-11-19 14:45:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11302 states to 11302 states and 18519 transitions. [2021-11-19 14:45:38,183 INFO L78 Accepts]: Start accepts. Automaton has 11302 states and 18519 transitions. Word has length 227 [2021-11-19 14:45:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:38,184 INFO L470 AbstractCegarLoop]: Abstraction has 11302 states and 18519 transitions. [2021-11-19 14:45:38,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 11302 states and 18519 transitions. [2021-11-19 14:45:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 14:45:38,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:38,237 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:38,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:38,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:38,457 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1462168000, now seen corresponding path program 1 times [2021-11-19 14:45:38,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:38,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100411959] [2021-11-19 14:45:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:38,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:38,461 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:38,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:45:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:38,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:38,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:39,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:39,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:39,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100411959] [2021-11-19 14:45:39,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100411959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:39,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:39,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:39,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960154957] [2021-11-19 14:45:39,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:39,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:39,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:39,661 INFO L87 Difference]: Start difference. First operand 11302 states and 18519 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:40,595 INFO L93 Difference]: Finished difference Result 22391 states and 36737 transitions. [2021-11-19 14:45:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 234 [2021-11-19 14:45:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:40,646 INFO L225 Difference]: With dead ends: 22391 [2021-11-19 14:45:40,646 INFO L226 Difference]: Without dead ends: 11310 [2021-11-19 14:45:40,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:40,683 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 151 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2685 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 14:45:40,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 2685 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-11-19 14:45:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11302. [2021-11-19 14:45:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11302 states, 9681 states have (on average 1.5678132424336328) internal successors, (15178), 9692 states have internal predecessors, (15178), 1570 states have call successors, (1570), 46 states have call predecessors, (1570), 50 states have return successors, (1707), 1568 states have call predecessors, (1707), 1569 states have call successors, (1707) [2021-11-19 14:45:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11302 states to 11302 states and 18455 transitions. [2021-11-19 14:45:41,731 INFO L78 Accepts]: Start accepts. Automaton has 11302 states and 18455 transitions. Word has length 234 [2021-11-19 14:45:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:41,732 INFO L470 AbstractCegarLoop]: Abstraction has 11302 states and 18455 transitions. [2021-11-19 14:45:41,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 14:45:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11302 states and 18455 transitions. [2021-11-19 14:45:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 14:45:41,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:41,767 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:41,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:41,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:41,980 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1184201224, now seen corresponding path program 1 times [2021-11-19 14:45:41,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:41,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363919326] [2021-11-19 14:45:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:41,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:41,983 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:42,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 14:45:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:42,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:42,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:42,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:43,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:43,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363919326] [2021-11-19 14:45:43,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363919326] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:43,009 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:43,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:43,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136324840] [2021-11-19 14:45:43,010 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:43,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:43,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:43,011 INFO L87 Difference]: Start difference. First operand 11302 states and 18455 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:44,544 INFO L93 Difference]: Finished difference Result 30411 states and 49374 transitions. [2021-11-19 14:45:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 228 [2021-11-19 14:45:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:44,624 INFO L225 Difference]: With dead ends: 30411 [2021-11-19 14:45:44,624 INFO L226 Difference]: Without dead ends: 19312 [2021-11-19 14:45:44,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:44,660 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 151 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1646 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 14:45:44,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1646 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2021-11-19 14:45:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 19304. [2021-11-19 14:45:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19304 states, 16595 states have (on average 1.5355830069297982) internal successors, (25483), 16606 states have internal predecessors, (25483), 2658 states have call successors, (2658), 46 states have call predecessors, (2658), 50 states have return successors, (2923), 2656 states have call predecessors, (2923), 2657 states have call successors, (2923) [2021-11-19 14:45:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19304 states to 19304 states and 31064 transitions. [2021-11-19 14:45:46,440 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 31064 transitions. Word has length 228 [2021-11-19 14:45:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:46,440 INFO L470 AbstractCegarLoop]: Abstraction has 19304 states and 31064 transitions. [2021-11-19 14:45:46,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 31064 transitions. [2021-11-19 14:45:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-19 14:45:46,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:46,477 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:46,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:46,693 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash -429946026, now seen corresponding path program 1 times [2021-11-19 14:45:46,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:46,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046869434] [2021-11-19 14:45:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:46,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:46,696 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:46,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:45:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:47,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:47,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:47,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:47,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:47,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046869434] [2021-11-19 14:45:47,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046869434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:47,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:47,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:47,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545423847] [2021-11-19 14:45:47,757 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:47,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:47,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:47,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:47,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:47,758 INFO L87 Difference]: Start difference. First operand 19304 states and 31064 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:50,025 INFO L93 Difference]: Finished difference Result 56072 states and 90519 transitions. [2021-11-19 14:45:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:50,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 229 [2021-11-19 14:45:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:50,158 INFO L225 Difference]: With dead ends: 56072 [2021-11-19 14:45:50,158 INFO L226 Difference]: Without dead ends: 36978 [2021-11-19 14:45:50,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:50,201 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 149 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1669 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 14:45:50,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1669 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36978 states. [2021-11-19 14:45:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36978 to 36970. [2021-11-19 14:45:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36970 states, 31957 states have (on average 1.5344368995838158) internal successors, (49036), 31968 states have internal predecessors, (49036), 4962 states have call successors, (4962), 46 states have call predecessors, (4962), 50 states have return successors, (5483), 4960 states have call predecessors, (5483), 4961 states have call successors, (5483) [2021-11-19 14:45:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36970 states to 36970 states and 59481 transitions. [2021-11-19 14:45:52,682 INFO L78 Accepts]: Start accepts. Automaton has 36970 states and 59481 transitions. Word has length 229 [2021-11-19 14:45:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:52,682 INFO L470 AbstractCegarLoop]: Abstraction has 36970 states and 59481 transitions. [2021-11-19 14:45:52,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 36970 states and 59481 transitions. [2021-11-19 14:45:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-19 14:45:52,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:52,728 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:52,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:52,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:52,946 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1016632875, now seen corresponding path program 1 times [2021-11-19 14:45:52,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:52,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719195659] [2021-11-19 14:45:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:52,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:52,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:52,949 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:52,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 14:45:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:53,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:53,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:45:53,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:53,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719195659] [2021-11-19 14:45:53,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719195659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:53,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:53,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:53,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726771966] [2021-11-19 14:45:53,938 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:53,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:53,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:53,940 INFO L87 Difference]: Start difference. First operand 36970 states and 59481 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:45:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:58,171 INFO L93 Difference]: Finished difference Result 107524 states and 173711 transitions. [2021-11-19 14:45:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 230 [2021-11-19 14:45:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:58,444 INFO L225 Difference]: With dead ends: 107524 [2021-11-19 14:45:58,445 INFO L226 Difference]: Without dead ends: 70772 [2021-11-19 14:45:58,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 457 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 14:45:58,551 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 147 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1662 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 14:45:58,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1662 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:58,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70772 states. [2021-11-19 14:46:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70772 to 70764. [2021-11-19 14:46:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70764 states, 61399 states have (on average 1.5366536914281992) internal successors, (94349), 61410 states have internal predecessors, (94349), 9314 states have call successors, (9314), 46 states have call predecessors, (9314), 50 states have return successors, (10347), 9312 states have call predecessors, (10347), 9313 states have call successors, (10347) [2021-11-19 14:46:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70764 states to 70764 states and 114010 transitions. [2021-11-19 14:46:04,455 INFO L78 Accepts]: Start accepts. Automaton has 70764 states and 114010 transitions. Word has length 230 [2021-11-19 14:46:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:04,455 INFO L470 AbstractCegarLoop]: Abstraction has 70764 states and 114010 transitions. [2021-11-19 14:46:04,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:46:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 70764 states and 114010 transitions. [2021-11-19 14:46:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-19 14:46:04,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:04,528 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:04,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:04,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:04,746 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1346044068, now seen corresponding path program 1 times [2021-11-19 14:46:04,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:04,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102660384] [2021-11-19 14:46:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:04,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:04,748 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:04,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38eca3a1-99ac-4011-bc26-d58d32a4cc41/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 14:46:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:05,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:05,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:46:05,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:46:05,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:05,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102660384] [2021-11-19 14:46:05,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102660384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:05,965 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:05,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:46:05,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141649525] [2021-11-19 14:46:05,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:05,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:46:05,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:46:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:05,967 INFO L87 Difference]: Start difference. First operand 70764 states and 114010 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37)