./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 781939b227b3ba0a20ad2d0323c2d13ae338349fb5c0bf292cccf74fd05cfb42 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:13:55,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:13:55,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:13:55,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:13:55,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:13:55,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:13:55,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:13:55,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:13:55,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:13:55,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:13:55,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:13:55,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:13:55,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:13:55,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:13:55,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:13:55,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:13:55,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:13:55,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:13:55,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:13:55,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:13:56,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:13:56,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:13:56,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:13:56,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:13:56,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:13:56,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:13:56,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:13:56,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:13:56,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:13:56,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:13:56,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:13:56,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:13:56,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:13:56,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:13:56,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:13:56,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:13:56,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:13:56,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:13:56,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:13:56,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:13:56,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:13:56,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:13:56,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:13:56,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:13:56,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:13:56,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:13:56,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:13:56,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:13:56,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:13:56,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:13:56,090 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:13:56,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:13:56,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:13:56,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:13:56,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:13:56,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:13:56,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:13:56,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:13:56,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:13:56,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:13:56,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:13:56,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:13:56,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:13:56,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:13:56,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:13:56,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:13:56,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:13:56,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:13:56,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:13:56,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:13:56,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:13:56,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:13:56,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:13:56,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:13:56,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:13:56,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:13:56,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781939b227b3ba0a20ad2d0323c2d13ae338349fb5c0bf292cccf74fd05cfb42 [2021-11-20 06:13:56,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:13:56,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:13:56,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:13:56,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:13:56,420 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:13:56,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2021-11-20 06:13:56,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/af5959a76/804677a0ed1846cd980ff8340a60c0c0/FLAGeee879620 [2021-11-20 06:13:57,106 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:13:57,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2021-11-20 06:13:57,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/af5959a76/804677a0ed1846cd980ff8340a60c0c0/FLAGeee879620 [2021-11-20 06:13:57,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/af5959a76/804677a0ed1846cd980ff8340a60c0c0 [2021-11-20 06:13:57,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:13:57,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:13:57,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:13:57,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:13:57,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:13:57,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:57" (1/1) ... [2021-11-20 06:13:57,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5f264c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:57, skipping insertion in model container [2021-11-20 06:13:57,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:57" (1/1) ... [2021-11-20 06:13:57,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:13:57,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:13:57,839 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c[65520,65533] [2021-11-20 06:13:57,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:13:57,863 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:13:58,053 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c[65520,65533] [2021-11-20 06:13:58,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:13:58,096 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:13:58,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58 WrapperNode [2021-11-20 06:13:58,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:13:58,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:13:58,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:13:58,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:13:58,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,218 INFO L137 Inliner]: procedures = 31, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 724 [2021-11-20 06:13:58,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:13:58,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:13:58,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:13:58,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:13:58,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:13:58,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:13:58,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:13:58,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:13:58,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (1/1) ... [2021-11-20 06:13:58,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:13:58,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:58,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:13:58,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:13:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:13:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:13:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:13:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:13:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:13:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:13:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:13:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:13:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:13:58,638 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:13:58,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:13:58,657 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 06:14:01,643 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-20 06:14:01,644 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-20 06:14:01,644 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:14:01,652 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:14:01,652 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:14:01,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:14:01 BoogieIcfgContainer [2021-11-20 06:14:01,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:14:01,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:14:01,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:14:01,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:14:01,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:13:57" (1/3) ... [2021-11-20 06:14:01,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bee6f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:14:01, skipping insertion in model container [2021-11-20 06:14:01,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:58" (2/3) ... [2021-11-20 06:14:01,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bee6f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:14:01, skipping insertion in model container [2021-11-20 06:14:01,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:14:01" (3/3) ... [2021-11-20 06:14:01,663 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-2.c [2021-11-20 06:14:01,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:14:01,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:14:01,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:14:01,723 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=PETRI_NET, 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 [2021-11-20 06:14:01,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:14:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:14:01,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:01,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:01,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-11-20 06:14:01,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:01,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119183915] [2021-11-20 06:14:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:01,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:02,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:02,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119183915] [2021-11-20 06:14:02,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119183915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:02,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:02,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:02,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951874094] [2021-11-20 06:14:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:02,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:02,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:02,242 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:04,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:04,578 INFO L93 Difference]: Finished difference Result 259 states and 432 transitions. [2021-11-20 06:14:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:14:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:04,592 INFO L225 Difference]: With dead ends: 259 [2021-11-20 06:14:04,592 INFO L226 Difference]: Without dead ends: 118 [2021-11-20 06:14:04,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:04,599 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 7 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:04,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 533 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 06:14:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-20 06:14:04,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-11-20 06:14:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.5) internal successors, (174), 116 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 174 transitions. [2021-11-20 06:14:04,641 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 174 transitions. Word has length 24 [2021-11-20 06:14:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:04,642 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 174 transitions. [2021-11-20 06:14:04,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 174 transitions. [2021-11-20 06:14:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 06:14:04,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:04,645 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:14:04,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:14:04,645 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:04,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1411658380, now seen corresponding path program 1 times [2021-11-20 06:14:04,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:04,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688744143] [2021-11-20 06:14:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:04,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:14:04,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:04,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688744143] [2021-11-20 06:14:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688744143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:04,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:04,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:04,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463008699] [2021-11-20 06:14:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:04,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:04,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:04,799 INFO L87 Difference]: Start difference. First operand 117 states and 174 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:04,849 INFO L93 Difference]: Finished difference Result 327 states and 490 transitions. [2021-11-20 06:14:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-20 06:14:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:04,853 INFO L225 Difference]: With dead ends: 327 [2021-11-20 06:14:04,853 INFO L226 Difference]: Without dead ends: 220 [2021-11-20 06:14:04,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:04,856 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 125 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:04,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 314 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:14:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-20 06:14:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-20 06:14:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4794520547945205) internal successors, (324), 219 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 324 transitions. [2021-11-20 06:14:04,887 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 324 transitions. Word has length 39 [2021-11-20 06:14:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:04,888 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 324 transitions. [2021-11-20 06:14:04,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 324 transitions. [2021-11-20 06:14:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 06:14:04,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:04,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 06:14:04,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:14:04,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1352249408, now seen corresponding path program 1 times [2021-11-20 06:14:04,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:04,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403743119] [2021-11-20 06:14:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:04,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:14:05,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:05,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403743119] [2021-11-20 06:14:05,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403743119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:05,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:05,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878491288] [2021-11-20 06:14:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:05,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:05,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:05,045 INFO L87 Difference]: Start difference. First operand 220 states and 324 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:07,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:07,118 INFO L93 Difference]: Finished difference Result 429 states and 639 transitions. [2021-11-20 06:14:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:07,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-20 06:14:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:07,123 INFO L225 Difference]: With dead ends: 429 [2021-11-20 06:14:07,123 INFO L226 Difference]: Without dead ends: 322 [2021-11-20 06:14:07,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:07,126 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 126 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:07,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:14:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-20 06:14:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-11-20 06:14:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.4735202492211839) internal successors, (473), 321 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 473 transitions. [2021-11-20 06:14:07,154 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 473 transitions. Word has length 54 [2021-11-20 06:14:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:07,155 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 473 transitions. [2021-11-20 06:14:07,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:07,155 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 473 transitions. [2021-11-20 06:14:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 06:14:07,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:07,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:14:07,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:14:07,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash 210697016, now seen corresponding path program 1 times [2021-11-20 06:14:07,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:07,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329987001] [2021-11-20 06:14:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:07,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:07,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:07,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329987001] [2021-11-20 06:14:07,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329987001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:07,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:07,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:07,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732568781] [2021-11-20 06:14:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:07,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:07,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:07,296 INFO L87 Difference]: Start difference. First operand 322 states and 473 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:09,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:11,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:11,820 INFO L93 Difference]: Finished difference Result 822 states and 1213 transitions. [2021-11-20 06:14:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-20 06:14:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:11,845 INFO L225 Difference]: With dead ends: 822 [2021-11-20 06:14:11,846 INFO L226 Difference]: Without dead ends: 510 [2021-11-20 06:14:11,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:11,849 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 98 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:11,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 568 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:14:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-20 06:14:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 372. [2021-11-20 06:14:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.5067385444743935) internal successors, (559), 371 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 559 transitions. [2021-11-20 06:14:11,892 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 559 transitions. Word has length 72 [2021-11-20 06:14:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:11,893 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 559 transitions. [2021-11-20 06:14:11,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 559 transitions. [2021-11-20 06:14:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 06:14:11,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:11,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:14:11,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:14:11,905 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash 76683510, now seen corresponding path program 1 times [2021-11-20 06:14:11,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:11,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181288556] [2021-11-20 06:14:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:11,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:12,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:12,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181288556] [2021-11-20 06:14:12,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181288556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:12,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:12,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:12,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798667307] [2021-11-20 06:14:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:12,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:12,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:12,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:12,099 INFO L87 Difference]: Start difference. First operand 372 states and 559 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:14,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:16,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:16,483 INFO L93 Difference]: Finished difference Result 818 states and 1229 transitions. [2021-11-20 06:14:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-20 06:14:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:16,487 INFO L225 Difference]: With dead ends: 818 [2021-11-20 06:14:16,487 INFO L226 Difference]: Without dead ends: 456 [2021-11-20 06:14:16,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:16,489 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 38 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:16,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 496 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:14:16,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-20 06:14:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 412. [2021-11-20 06:14:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.5255474452554745) internal successors, (627), 411 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 627 transitions. [2021-11-20 06:14:16,522 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 627 transitions. Word has length 72 [2021-11-20 06:14:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:16,523 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 627 transitions. [2021-11-20 06:14:16,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 627 transitions. [2021-11-20 06:14:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 06:14:16,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:16,526 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:14:16,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:14:16,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2062745025, now seen corresponding path program 1 times [2021-11-20 06:14:16,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:16,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821086170] [2021-11-20 06:14:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:16,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:16,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:16,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821086170] [2021-11-20 06:14:16,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821086170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:16,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:16,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446155450] [2021-11-20 06:14:16,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:16,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:16,673 INFO L87 Difference]: Start difference. First operand 412 states and 627 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:18,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:20,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:21,200 INFO L93 Difference]: Finished difference Result 946 states and 1426 transitions. [2021-11-20 06:14:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:21,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-20 06:14:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:21,205 INFO L225 Difference]: With dead ends: 946 [2021-11-20 06:14:21,205 INFO L226 Difference]: Without dead ends: 544 [2021-11-20 06:14:21,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:21,207 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 93 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:21,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 558 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:14:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-20 06:14:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 414. [2021-11-20 06:14:21,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.523002421307506) internal successors, (629), 413 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 629 transitions. [2021-11-20 06:14:21,225 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 629 transitions. Word has length 73 [2021-11-20 06:14:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:21,226 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 629 transitions. [2021-11-20 06:14:21,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 629 transitions. [2021-11-20 06:14:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 06:14:21,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:21,229 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:14:21,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:14:21,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 475156595, now seen corresponding path program 1 times [2021-11-20 06:14:21,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:21,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624558210] [2021-11-20 06:14:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:21,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:21,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:21,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624558210] [2021-11-20 06:14:21,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624558210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:21,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:21,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:21,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299870006] [2021-11-20 06:14:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:21,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:21,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:21,331 INFO L87 Difference]: Start difference. First operand 414 states and 629 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:23,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:25,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:25,768 INFO L93 Difference]: Finished difference Result 948 states and 1426 transitions. [2021-11-20 06:14:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:25,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-20 06:14:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:25,773 INFO L225 Difference]: With dead ends: 948 [2021-11-20 06:14:25,773 INFO L226 Difference]: Without dead ends: 544 [2021-11-20 06:14:25,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:25,775 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 91 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:25,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 556 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:14:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-20 06:14:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 416. [2021-11-20 06:14:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.5204819277108435) internal successors, (631), 415 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 631 transitions. [2021-11-20 06:14:25,793 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 631 transitions. Word has length 74 [2021-11-20 06:14:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:25,793 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 631 transitions. [2021-11-20 06:14:25,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 631 transitions. [2021-11-20 06:14:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:14:25,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:25,795 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:14:25,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:14:25,796 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1840475418, now seen corresponding path program 1 times [2021-11-20 06:14:25,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:25,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551098915] [2021-11-20 06:14:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:25,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:25,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551098915] [2021-11-20 06:14:25,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551098915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:25,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:25,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:25,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731363946] [2021-11-20 06:14:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:25,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:25,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:25,898 INFO L87 Difference]: Start difference. First operand 416 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:27,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:29,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:30,411 INFO L93 Difference]: Finished difference Result 940 states and 1414 transitions. [2021-11-20 06:14:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:30,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-20 06:14:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:30,416 INFO L225 Difference]: With dead ends: 940 [2021-11-20 06:14:30,416 INFO L226 Difference]: Without dead ends: 534 [2021-11-20 06:14:30,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:30,418 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 84 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:30,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 550 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 226 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:14:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-20 06:14:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 418. [2021-11-20 06:14:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.5179856115107915) internal successors, (633), 417 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 633 transitions. [2021-11-20 06:14:30,435 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 633 transitions. Word has length 75 [2021-11-20 06:14:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:30,436 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 633 transitions. [2021-11-20 06:14:30,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 633 transitions. [2021-11-20 06:14:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:14:30,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:30,438 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 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] [2021-11-20 06:14:30,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:14:30,439 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1935805867, now seen corresponding path program 2 times [2021-11-20 06:14:30,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456010303] [2021-11-20 06:14:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:30,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:30,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456010303] [2021-11-20 06:14:30,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456010303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:30,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:30,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:30,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590626597] [2021-11-20 06:14:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:30,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:30,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:30,531 INFO L87 Difference]: Start difference. First operand 418 states and 633 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:32,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:34,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:34,996 INFO L93 Difference]: Finished difference Result 940 states and 1412 transitions. [2021-11-20 06:14:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:14:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:35,001 INFO L225 Difference]: With dead ends: 940 [2021-11-20 06:14:35,001 INFO L226 Difference]: Without dead ends: 532 [2021-11-20 06:14:35,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:35,002 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 99 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:35,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 548 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:14:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-20 06:14:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2021-11-20 06:14:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.513189448441247) internal successors, (631), 417 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 631 transitions. [2021-11-20 06:14:35,019 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 631 transitions. Word has length 87 [2021-11-20 06:14:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:35,019 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 631 transitions. [2021-11-20 06:14:35,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 631 transitions. [2021-11-20 06:14:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:14:35,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:35,021 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-20 06:14:35,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:14:35,022 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1954461325, now seen corresponding path program 1 times [2021-11-20 06:14:35,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:35,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396555755] [2021-11-20 06:14:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:35,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:35,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396555755] [2021-11-20 06:14:35,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396555755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:35,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:35,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:35,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706930245] [2021-11-20 06:14:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:35,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:35,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:35,108 INFO L87 Difference]: Start difference. First operand 418 states and 631 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:37,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:39,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:39,586 INFO L93 Difference]: Finished difference Result 940 states and 1408 transitions. [2021-11-20 06:14:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:39,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:14:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:39,591 INFO L225 Difference]: With dead ends: 940 [2021-11-20 06:14:39,591 INFO L226 Difference]: Without dead ends: 532 [2021-11-20 06:14:39,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:39,592 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 97 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:39,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 546 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:14:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-20 06:14:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2021-11-20 06:14:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.5083932853717026) internal successors, (629), 417 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 629 transitions. [2021-11-20 06:14:39,611 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 629 transitions. Word has length 87 [2021-11-20 06:14:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:39,611 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 629 transitions. [2021-11-20 06:14:39,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 629 transitions. [2021-11-20 06:14:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:14:39,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:39,613 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 06:14:39,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:14:39,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1635005334, now seen corresponding path program 1 times [2021-11-20 06:14:39,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:39,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756442631] [2021-11-20 06:14:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:39,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:39,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756442631] [2021-11-20 06:14:39,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756442631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:39,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:39,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:39,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308739903] [2021-11-20 06:14:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:39,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:39,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:39,727 INFO L87 Difference]: Start difference. First operand 418 states and 629 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:41,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:43,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:44,182 INFO L93 Difference]: Finished difference Result 791 states and 1178 transitions. [2021-11-20 06:14:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:14:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:44,187 INFO L225 Difference]: With dead ends: 791 [2021-11-20 06:14:44,187 INFO L226 Difference]: Without dead ends: 532 [2021-11-20 06:14:44,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:44,189 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 92 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:44,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 544 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:14:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-20 06:14:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2021-11-20 06:14:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.5035971223021583) internal successors, (627), 417 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:44,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 627 transitions. [2021-11-20 06:14:44,206 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 627 transitions. Word has length 87 [2021-11-20 06:14:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:44,206 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 627 transitions. [2021-11-20 06:14:44,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 627 transitions. [2021-11-20 06:14:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:14:44,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:44,208 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 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] [2021-11-20 06:14:44,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:14:44,209 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 513794263, now seen corresponding path program 2 times [2021-11-20 06:14:44,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:44,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401766481] [2021-11-20 06:14:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:44,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:44,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401766481] [2021-11-20 06:14:44,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401766481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:44,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:44,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615856998] [2021-11-20 06:14:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:44,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:44,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:44,293 INFO L87 Difference]: Start difference. First operand 418 states and 627 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:46,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:48,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:48,636 INFO L93 Difference]: Finished difference Result 868 states and 1293 transitions. [2021-11-20 06:14:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:48,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:14:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:48,640 INFO L225 Difference]: With dead ends: 868 [2021-11-20 06:14:48,640 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 06:14:48,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:48,642 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 46 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:48,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 496 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:14:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 06:14:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2021-11-20 06:14:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.498800959232614) internal successors, (625), 417 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 625 transitions. [2021-11-20 06:14:48,679 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 625 transitions. Word has length 87 [2021-11-20 06:14:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:48,680 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 625 transitions. [2021-11-20 06:14:48,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 625 transitions. [2021-11-20 06:14:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:14:48,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:48,682 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-20 06:14:48,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:14:48,682 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash 495138805, now seen corresponding path program 1 times [2021-11-20 06:14:48,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:48,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008010033] [2021-11-20 06:14:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:48,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:48,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008010033] [2021-11-20 06:14:48,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008010033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:48,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:48,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:48,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405344846] [2021-11-20 06:14:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:48,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:48,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:48,771 INFO L87 Difference]: Start difference. First operand 418 states and 625 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:50,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:52,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:53,127 INFO L93 Difference]: Finished difference Result 868 states and 1289 transitions. [2021-11-20 06:14:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:14:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:53,131 INFO L225 Difference]: With dead ends: 868 [2021-11-20 06:14:53,132 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 06:14:53,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:53,135 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 44 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:53,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 494 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:14:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 06:14:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2021-11-20 06:14:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4940047961630696) internal successors, (623), 417 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 623 transitions. [2021-11-20 06:14:53,152 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 623 transitions. Word has length 87 [2021-11-20 06:14:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:53,153 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 623 transitions. [2021-11-20 06:14:53,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 623 transitions. [2021-11-20 06:14:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:14:53,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:53,155 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 06:14:53,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:14:53,155 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash -210361832, now seen corresponding path program 1 times [2021-11-20 06:14:53,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796142655] [2021-11-20 06:14:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:53,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:53,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:53,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796142655] [2021-11-20 06:14:53,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796142655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:53,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:53,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:53,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552729146] [2021-11-20 06:14:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:53,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:53,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:53,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:53,272 INFO L87 Difference]: Start difference. First operand 418 states and 623 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:55,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:57,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:14:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:57,586 INFO L93 Difference]: Finished difference Result 719 states and 1062 transitions. [2021-11-20 06:14:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:57,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:14:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:57,590 INFO L225 Difference]: With dead ends: 719 [2021-11-20 06:14:57,590 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 06:14:57,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:57,591 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 39 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:57,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 492 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:14:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 06:14:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2021-11-20 06:14:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4892086330935252) internal successors, (621), 417 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 621 transitions. [2021-11-20 06:14:57,606 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 621 transitions. Word has length 87 [2021-11-20 06:14:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:57,606 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 621 transitions. [2021-11-20 06:14:57,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 621 transitions. [2021-11-20 06:14:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 06:14:57,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:57,608 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-11-20 06:14:57,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:14:57,609 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1668397004, now seen corresponding path program 1 times [2021-11-20 06:14:57,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:57,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353887409] [2021-11-20 06:14:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:57,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:14:57,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:57,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353887409] [2021-11-20 06:14:57,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353887409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:57,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:57,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:57,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037570351] [2021-11-20 06:14:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:57,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:57,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:57,708 INFO L87 Difference]: Start difference. First operand 418 states and 621 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:14:59,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:01,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:02,154 INFO L93 Difference]: Finished difference Result 940 states and 1388 transitions. [2021-11-20 06:15:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:02,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-20 06:15:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:02,160 INFO L225 Difference]: With dead ends: 940 [2021-11-20 06:15:02,160 INFO L226 Difference]: Without dead ends: 532 [2021-11-20 06:15:02,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:02,161 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 94 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:02,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 542 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:15:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-20 06:15:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 418. [2021-11-20 06:15:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.484412470023981) internal successors, (619), 417 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 619 transitions. [2021-11-20 06:15:02,181 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 619 transitions. Word has length 88 [2021-11-20 06:15:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:02,181 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 619 transitions. [2021-11-20 06:15:02,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 619 transitions. [2021-11-20 06:15:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 06:15:02,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:02,183 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:02,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:15:02,184 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:02,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:02,184 INFO L85 PathProgramCache]: Analyzing trace with hash -570561745, now seen corresponding path program 1 times [2021-11-20 06:15:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:02,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135041429] [2021-11-20 06:15:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:02,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:02,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:02,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135041429] [2021-11-20 06:15:02,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135041429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:02,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:02,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:02,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597725560] [2021-11-20 06:15:02,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:02,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:02,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:02,269 INFO L87 Difference]: Start difference. First operand 418 states and 619 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:04,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:06,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:06,745 INFO L93 Difference]: Finished difference Result 785 states and 1156 transitions. [2021-11-20 06:15:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:06,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-20 06:15:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:06,750 INFO L225 Difference]: With dead ends: 785 [2021-11-20 06:15:06,750 INFO L226 Difference]: Without dead ends: 526 [2021-11-20 06:15:06,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:06,751 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 87 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:06,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 536 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:15:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-20 06:15:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 418. [2021-11-20 06:15:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4796163069544364) internal successors, (617), 417 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 617 transitions. [2021-11-20 06:15:06,766 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 617 transitions. Word has length 88 [2021-11-20 06:15:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:06,766 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 617 transitions. [2021-11-20 06:15:06,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 617 transitions. [2021-11-20 06:15:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 06:15:06,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:06,768 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-11-20 06:15:06,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:15:06,769 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:06,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:06,769 INFO L85 PathProgramCache]: Analyzing trace with hash 296589706, now seen corresponding path program 1 times [2021-11-20 06:15:06,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:06,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227533300] [2021-11-20 06:15:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:06,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:06,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227533300] [2021-11-20 06:15:06,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227533300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:06,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:06,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:06,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223607227] [2021-11-20 06:15:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:06,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:06,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:06,879 INFO L87 Difference]: Start difference. First operand 418 states and 617 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:08,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:10,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:11,187 INFO L93 Difference]: Finished difference Result 868 states and 1273 transitions. [2021-11-20 06:15:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:11,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-20 06:15:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:11,191 INFO L225 Difference]: With dead ends: 868 [2021-11-20 06:15:11,191 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 06:15:11,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:11,193 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 41 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:11,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 490 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 06:15:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2021-11-20 06:15:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.474820143884892) internal successors, (615), 417 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 615 transitions. [2021-11-20 06:15:11,207 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 615 transitions. Word has length 88 [2021-11-20 06:15:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:11,208 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 615 transitions. [2021-11-20 06:15:11,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 615 transitions. [2021-11-20 06:15:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 06:15:11,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:11,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:11,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:15:11,211 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1942369043, now seen corresponding path program 1 times [2021-11-20 06:15:11,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326052250] [2021-11-20 06:15:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:11,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:11,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:11,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326052250] [2021-11-20 06:15:11,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326052250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:11,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:11,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:11,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011915422] [2021-11-20 06:15:11,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:11,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:11,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:11,286 INFO L87 Difference]: Start difference. First operand 418 states and 615 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:13,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:15,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:15,617 INFO L93 Difference]: Finished difference Result 713 states and 1043 transitions. [2021-11-20 06:15:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-20 06:15:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:15,621 INFO L225 Difference]: With dead ends: 713 [2021-11-20 06:15:15,621 INFO L226 Difference]: Without dead ends: 454 [2021-11-20 06:15:15,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:15,623 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 34 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:15,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 484 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-20 06:15:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 418. [2021-11-20 06:15:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4700239808153477) internal successors, (613), 417 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 613 transitions. [2021-11-20 06:15:15,637 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 613 transitions. Word has length 88 [2021-11-20 06:15:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:15,638 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 613 transitions. [2021-11-20 06:15:15,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 613 transitions. [2021-11-20 06:15:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:15:15,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:15,640 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 06:15:15,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:15:15,640 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash -233112104, now seen corresponding path program 1 times [2021-11-20 06:15:15,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574483] [2021-11-20 06:15:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:15,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:15,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:15,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574483] [2021-11-20 06:15:15,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:15,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:15,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:15,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914502067] [2021-11-20 06:15:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:15,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:15,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:15,715 INFO L87 Difference]: Start difference. First operand 418 states and 613 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:17,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:19,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:20,148 INFO L93 Difference]: Finished difference Result 934 states and 1365 transitions. [2021-11-20 06:15:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:20,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-20 06:15:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:20,154 INFO L225 Difference]: With dead ends: 934 [2021-11-20 06:15:20,155 INFO L226 Difference]: Without dead ends: 526 [2021-11-20 06:15:20,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:20,157 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 89 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:20,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 534 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:15:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-20 06:15:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 418. [2021-11-20 06:15:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4652278177458034) internal successors, (611), 417 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 611 transitions. [2021-11-20 06:15:20,174 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 611 transitions. Word has length 89 [2021-11-20 06:15:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:20,174 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 611 transitions. [2021-11-20 06:15:20,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 611 transitions. [2021-11-20 06:15:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:15:20,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:20,176 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 06:15:20,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:15:20,177 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 190534618, now seen corresponding path program 1 times [2021-11-20 06:15:20,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610282767] [2021-11-20 06:15:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:20,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:20,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610282767] [2021-11-20 06:15:20,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610282767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:20,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:20,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:20,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372451195] [2021-11-20 06:15:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:20,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:20,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:20,294 INFO L87 Difference]: Start difference. First operand 418 states and 611 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:22,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:24,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:24,610 INFO L93 Difference]: Finished difference Result 862 states and 1254 transitions. [2021-11-20 06:15:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-20 06:15:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:24,614 INFO L225 Difference]: With dead ends: 862 [2021-11-20 06:15:24,614 INFO L226 Difference]: Without dead ends: 454 [2021-11-20 06:15:24,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:24,615 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 36 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:24,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 482 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-20 06:15:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 418. [2021-11-20 06:15:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.460431654676259) internal successors, (609), 417 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 609 transitions. [2021-11-20 06:15:24,629 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 609 transitions. Word has length 89 [2021-11-20 06:15:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:24,629 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 609 transitions. [2021-11-20 06:15:24,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 609 transitions. [2021-11-20 06:15:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 06:15:24,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:24,631 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-20 06:15:24,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:15:24,632 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1591319919, now seen corresponding path program 1 times [2021-11-20 06:15:24,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:24,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435251691] [2021-11-20 06:15:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:24,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:24,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:24,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435251691] [2021-11-20 06:15:24,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435251691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:24,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:24,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:24,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901142505] [2021-11-20 06:15:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:24,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:24,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:24,704 INFO L87 Difference]: Start difference. First operand 418 states and 609 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:26,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:28,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:29,116 INFO L93 Difference]: Finished difference Result 916 states and 1335 transitions. [2021-11-20 06:15:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:29,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-20 06:15:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:29,120 INFO L225 Difference]: With dead ends: 916 [2021-11-20 06:15:29,120 INFO L226 Difference]: Without dead ends: 508 [2021-11-20 06:15:29,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:29,121 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 80 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:29,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 520 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 06:15:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-20 06:15:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 418. [2021-11-20 06:15:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4556354916067147) internal successors, (607), 417 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 607 transitions. [2021-11-20 06:15:29,136 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 607 transitions. Word has length 90 [2021-11-20 06:15:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:29,136 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 607 transitions. [2021-11-20 06:15:29,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 607 transitions. [2021-11-20 06:15:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 06:15:29,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:29,138 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 06:15:29,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 06:15:29,139 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1012220386, now seen corresponding path program 1 times [2021-11-20 06:15:29,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:29,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207015526] [2021-11-20 06:15:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:29,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:29,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:29,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207015526] [2021-11-20 06:15:29,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207015526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:29,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:29,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:29,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147412135] [2021-11-20 06:15:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:29,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:29,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:29,213 INFO L87 Difference]: Start difference. First operand 418 states and 607 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:31,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:33,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:33,573 INFO L93 Difference]: Finished difference Result 916 states and 1331 transitions. [2021-11-20 06:15:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-20 06:15:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:33,578 INFO L225 Difference]: With dead ends: 916 [2021-11-20 06:15:33,578 INFO L226 Difference]: Without dead ends: 508 [2021-11-20 06:15:33,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:33,580 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 74 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:33,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 520 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-20 06:15:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 418. [2021-11-20 06:15:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4508393285371703) internal successors, (605), 417 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 605 transitions. [2021-11-20 06:15:33,594 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 605 transitions. Word has length 90 [2021-11-20 06:15:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 605 transitions. [2021-11-20 06:15:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 605 transitions. [2021-11-20 06:15:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 06:15:33,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:33,596 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-20 06:15:33,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 06:15:33,597 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1343173425, now seen corresponding path program 1 times [2021-11-20 06:15:33,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:33,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953686373] [2021-11-20 06:15:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:33,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:15:33,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:33,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953686373] [2021-11-20 06:15:33,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953686373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:33,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:33,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:33,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15890597] [2021-11-20 06:15:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:33,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:33,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:33,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:33,670 INFO L87 Difference]: Start difference. First operand 418 states and 605 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:35,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:37,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:37,967 INFO L93 Difference]: Finished difference Result 844 states and 1220 transitions. [2021-11-20 06:15:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-20 06:15:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:37,970 INFO L225 Difference]: With dead ends: 844 [2021-11-20 06:15:37,971 INFO L226 Difference]: Without dead ends: 436 [2021-11-20 06:15:37,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:37,972 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 27 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:37,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 466 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:37,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-20 06:15:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 418. [2021-11-20 06:15:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4460431654676258) internal successors, (603), 417 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 603 transitions. [2021-11-20 06:15:37,986 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 603 transitions. Word has length 90 [2021-11-20 06:15:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:37,987 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 603 transitions. [2021-11-20 06:15:37,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 603 transitions. [2021-11-20 06:15:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 06:15:38,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:38,013 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 06:15:38,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:15:38,013 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:38,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1260366880, now seen corresponding path program 1 times [2021-11-20 06:15:38,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:38,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009954791] [2021-11-20 06:15:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:38,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 06:15:38,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:38,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009954791] [2021-11-20 06:15:38,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009954791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:38,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:38,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:15:38,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146542550] [2021-11-20 06:15:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:38,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:15:38,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:15:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:15:38,079 INFO L87 Difference]: Start difference. First operand 418 states and 603 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:40,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:40,143 INFO L93 Difference]: Finished difference Result 827 states and 1200 transitions. [2021-11-20 06:15:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:15:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-20 06:15:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:40,147 INFO L225 Difference]: With dead ends: 827 [2021-11-20 06:15:40,147 INFO L226 Difference]: Without dead ends: 570 [2021-11-20 06:15:40,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:15:40,149 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 124 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:40,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 474 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:15:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-20 06:15:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2021-11-20 06:15:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4411247803163445) internal successors, (820), 569 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 820 transitions. [2021-11-20 06:15:40,166 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 820 transitions. Word has length 90 [2021-11-20 06:15:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:40,166 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 820 transitions. [2021-11-20 06:15:40,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 820 transitions. [2021-11-20 06:15:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 06:15:40,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:40,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 06:15:40,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 06:15:40,169 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:40,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash -584407498, now seen corresponding path program 1 times [2021-11-20 06:15:40,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:40,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804259558] [2021-11-20 06:15:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:40,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-20 06:15:40,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:40,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804259558] [2021-11-20 06:15:40,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804259558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:40,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:40,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:15:40,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371470194] [2021-11-20 06:15:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:40,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:15:40,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:15:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:15:40,235 INFO L87 Difference]: Start difference. First operand 570 states and 820 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:42,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:42,297 INFO L93 Difference]: Finished difference Result 1130 states and 1633 transitions. [2021-11-20 06:15:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:15:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-20 06:15:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:42,301 INFO L225 Difference]: With dead ends: 1130 [2021-11-20 06:15:42,301 INFO L226 Difference]: Without dead ends: 721 [2021-11-20 06:15:42,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:15:42,302 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 128 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:42,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:15:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-11-20 06:15:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2021-11-20 06:15:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.4388888888888889) internal successors, (1036), 720 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1036 transitions. [2021-11-20 06:15:42,323 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1036 transitions. Word has length 92 [2021-11-20 06:15:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1036 transitions. [2021-11-20 06:15:42,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1036 transitions. [2021-11-20 06:15:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 06:15:42,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:42,326 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-20 06:15:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:15:42,326 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash -782701753, now seen corresponding path program 1 times [2021-11-20 06:15:42,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:42,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452708418] [2021-11-20 06:15:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:42,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:15:42,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:42,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452708418] [2021-11-20 06:15:42,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452708418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:42,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:42,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:15:42,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025304478] [2021-11-20 06:15:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:15:42,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:15:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:15:42,396 INFO L87 Difference]: Start difference. First operand 721 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:44,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:44,459 INFO L93 Difference]: Finished difference Result 1278 states and 1839 transitions. [2021-11-20 06:15:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:15:44,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-20 06:15:44,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:44,464 INFO L225 Difference]: With dead ends: 1278 [2021-11-20 06:15:44,464 INFO L226 Difference]: Without dead ends: 718 [2021-11-20 06:15:44,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:15:44,466 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 128 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:44,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 469 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:15:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-20 06:15:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2021-11-20 06:15:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 1.4309623430962344) internal successors, (1026), 717 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1026 transitions. [2021-11-20 06:15:44,498 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1026 transitions. Word has length 113 [2021-11-20 06:15:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:44,499 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1026 transitions. [2021-11-20 06:15:44,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1026 transitions. [2021-11-20 06:15:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 06:15:44,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:44,501 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-20 06:15:44,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:15:44,502 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash -698320702, now seen corresponding path program 1 times [2021-11-20 06:15:44,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609517246] [2021-11-20 06:15:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:44,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:15:44,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:44,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609517246] [2021-11-20 06:15:44,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609517246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:44,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:44,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:44,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634883460] [2021-11-20 06:15:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:44,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:44,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:44,590 INFO L87 Difference]: Start difference. First operand 718 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:46,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:48,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:48,865 INFO L93 Difference]: Finished difference Result 1632 states and 2335 transitions. [2021-11-20 06:15:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:48,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-20 06:15:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:48,871 INFO L225 Difference]: With dead ends: 1632 [2021-11-20 06:15:48,871 INFO L226 Difference]: Without dead ends: 924 [2021-11-20 06:15:48,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:48,873 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 46 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:48,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 508 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-11-20 06:15:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 814. [2021-11-20 06:15:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4686346863468636) internal successors, (1194), 813 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1194 transitions. [2021-11-20 06:15:48,897 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1194 transitions. Word has length 115 [2021-11-20 06:15:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:48,898 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1194 transitions. [2021-11-20 06:15:48,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1194 transitions. [2021-11-20 06:15:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 06:15:48,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:48,901 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-20 06:15:48,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 06:15:48,901 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1667253281, now seen corresponding path program 2 times [2021-11-20 06:15:48,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:48,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579356185] [2021-11-20 06:15:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:48,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:15:48,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:48,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579356185] [2021-11-20 06:15:48,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579356185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:48,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:48,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:48,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558709010] [2021-11-20 06:15:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:48,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:48,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:48,986 INFO L87 Difference]: Start difference. First operand 814 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:50,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:53,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:53,303 INFO L93 Difference]: Finished difference Result 1724 states and 2495 transitions. [2021-11-20 06:15:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-20 06:15:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:53,310 INFO L225 Difference]: With dead ends: 1724 [2021-11-20 06:15:53,310 INFO L226 Difference]: Without dead ends: 920 [2021-11-20 06:15:53,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:53,312 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 58 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:53,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 508 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:15:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-20 06:15:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 814. [2021-11-20 06:15:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4637146371463714) internal successors, (1190), 813 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1190 transitions. [2021-11-20 06:15:53,338 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1190 transitions. Word has length 130 [2021-11-20 06:15:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:53,338 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1190 transitions. [2021-11-20 06:15:53,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1190 transitions. [2021-11-20 06:15:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 06:15:53,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:53,341 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-20 06:15:53,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 06:15:53,341 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash 919227327, now seen corresponding path program 1 times [2021-11-20 06:15:53,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:53,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919603213] [2021-11-20 06:15:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:53,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:15:53,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:53,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919603213] [2021-11-20 06:15:53,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919603213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:53,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:53,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:53,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994081777] [2021-11-20 06:15:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:53,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:53,422 INFO L87 Difference]: Start difference. First operand 814 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:55,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:57,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:57,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:57,724 INFO L93 Difference]: Finished difference Result 1724 states and 2487 transitions. [2021-11-20 06:15:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:15:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-20 06:15:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:57,730 INFO L225 Difference]: With dead ends: 1724 [2021-11-20 06:15:57,730 INFO L226 Difference]: Without dead ends: 920 [2021-11-20 06:15:57,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:15:57,739 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 56 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:57,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 506 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:15:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-20 06:15:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 814. [2021-11-20 06:15:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4587945879458795) internal successors, (1186), 813 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1186 transitions. [2021-11-20 06:15:57,764 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1186 transitions. Word has length 130 [2021-11-20 06:15:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1186 transitions. [2021-11-20 06:15:57,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1186 transitions. [2021-11-20 06:15:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 06:15:57,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:57,768 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2021-11-20 06:15:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 06:15:57,769 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1537947938, now seen corresponding path program 1 times [2021-11-20 06:15:57,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:57,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813574350] [2021-11-20 06:15:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:57,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-20 06:15:57,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:57,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813574350] [2021-11-20 06:15:57,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813574350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:57,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:57,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:15:57,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713425894] [2021-11-20 06:15:57,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:57,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:15:57,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:15:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:15:57,868 INFO L87 Difference]: Start difference. First operand 814 states and 1186 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:15:59,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:01,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:02,162 INFO L93 Difference]: Finished difference Result 1581 states and 2304 transitions. [2021-11-20 06:16:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:02,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-20 06:16:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:02,168 INFO L225 Difference]: With dead ends: 1581 [2021-11-20 06:16:02,168 INFO L226 Difference]: Without dead ends: 952 [2021-11-20 06:16:02,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:02,170 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 30 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:02,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 471 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:16:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-11-20 06:16:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 886. [2021-11-20 06:16:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.4757062146892654) internal successors, (1306), 885 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1306 transitions. [2021-11-20 06:16:02,195 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1306 transitions. Word has length 130 [2021-11-20 06:16:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:02,196 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1306 transitions. [2021-11-20 06:16:02,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1306 transitions. [2021-11-20 06:16:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 06:16:02,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:02,199 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-20 06:16:02,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 06:16:02,199 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:02,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1834884522, now seen corresponding path program 1 times [2021-11-20 06:16:02,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:02,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241189762] [2021-11-20 06:16:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:02,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:16:02,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:02,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241189762] [2021-11-20 06:16:02,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241189762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:02,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:02,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:16:02,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671426066] [2021-11-20 06:16:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:02,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:02,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:02,298 INFO L87 Difference]: Start difference. First operand 886 states and 1306 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:04,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:06,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:06,553 INFO L93 Difference]: Finished difference Result 1868 states and 2719 transitions. [2021-11-20 06:16:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-20 06:16:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:06,558 INFO L225 Difference]: With dead ends: 1868 [2021-11-20 06:16:06,558 INFO L226 Difference]: Without dead ends: 992 [2021-11-20 06:16:06,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:06,560 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 54 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:06,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 504 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:16:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-20 06:16:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 886. [2021-11-20 06:16:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.471186440677966) internal successors, (1302), 885 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1302 transitions. [2021-11-20 06:16:06,585 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1302 transitions. Word has length 131 [2021-11-20 06:16:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:06,586 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1302 transitions. [2021-11-20 06:16:06,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1302 transitions. [2021-11-20 06:16:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 06:16:06,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:06,588 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2021-11-20 06:16:06,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 06:16:06,589 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash 653511332, now seen corresponding path program 1 times [2021-11-20 06:16:06,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:06,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146852225] [2021-11-20 06:16:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:06,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:16:06,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:06,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146852225] [2021-11-20 06:16:06,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146852225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:06,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:16:06,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180932682] [2021-11-20 06:16:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:06,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:06,676 INFO L87 Difference]: Start difference. First operand 886 states and 1302 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:08,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:10,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:10,941 INFO L93 Difference]: Finished difference Result 1868 states and 2711 transitions. [2021-11-20 06:16:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-20 06:16:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:10,947 INFO L225 Difference]: With dead ends: 1868 [2021-11-20 06:16:10,947 INFO L226 Difference]: Without dead ends: 992 [2021-11-20 06:16:10,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:10,949 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 52 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:10,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 502 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:16:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-20 06:16:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 886. [2021-11-20 06:16:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.4666666666666666) internal successors, (1298), 885 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1298 transitions. [2021-11-20 06:16:10,974 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1298 transitions. Word has length 132 [2021-11-20 06:16:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:10,975 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1298 transitions. [2021-11-20 06:16:10,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1298 transitions. [2021-11-20 06:16:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 06:16:10,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:10,978 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 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] [2021-11-20 06:16:10,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 06:16:10,978 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1844078565, now seen corresponding path program 1 times [2021-11-20 06:16:10,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:10,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408657658] [2021-11-20 06:16:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:10,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 06:16:11,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408657658] [2021-11-20 06:16:11,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408657658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:11,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:11,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:16:11,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881280530] [2021-11-20 06:16:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:11,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:11,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:11,063 INFO L87 Difference]: Start difference. First operand 886 states and 1298 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:13,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:15,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:15,302 INFO L93 Difference]: Finished difference Result 1832 states and 2659 transitions. [2021-11-20 06:16:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:15,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-20 06:16:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:15,308 INFO L225 Difference]: With dead ends: 1832 [2021-11-20 06:16:15,308 INFO L226 Difference]: Without dead ends: 956 [2021-11-20 06:16:15,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:15,310 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 43 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:15,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 488 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:16:15,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-11-20 06:16:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 886. [2021-11-20 06:16:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.4621468926553671) internal successors, (1294), 885 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1294 transitions. [2021-11-20 06:16:15,342 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1294 transitions. Word has length 133 [2021-11-20 06:16:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:15,343 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1294 transitions. [2021-11-20 06:16:15,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1294 transitions. [2021-11-20 06:16:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 06:16:15,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:15,346 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2021-11-20 06:16:15,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 06:16:15,346 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash 487188268, now seen corresponding path program 1 times [2021-11-20 06:16:15,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:15,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854130667] [2021-11-20 06:16:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:15,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-20 06:16:15,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:15,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854130667] [2021-11-20 06:16:15,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854130667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:15,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:15,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:16:15,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854860292] [2021-11-20 06:16:15,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:15,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:15,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:15,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:15,428 INFO L87 Difference]: Start difference. First operand 886 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:17,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:19,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:19,705 INFO L93 Difference]: Finished difference Result 1992 states and 2908 transitions. [2021-11-20 06:16:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-20 06:16:19,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:19,710 INFO L225 Difference]: With dead ends: 1992 [2021-11-20 06:16:19,710 INFO L226 Difference]: Without dead ends: 1116 [2021-11-20 06:16:19,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:19,712 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 43 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:19,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 501 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:16:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-20 06:16:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 996. [2021-11-20 06:16:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.491457286432161) internal successors, (1484), 995 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1484 transitions. [2021-11-20 06:16:19,740 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1484 transitions. Word has length 133 [2021-11-20 06:16:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:19,740 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1484 transitions. [2021-11-20 06:16:19,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1484 transitions. [2021-11-20 06:16:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 06:16:19,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:19,744 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2021-11-20 06:16:19,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 06:16:19,744 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-11-20 06:16:19,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:19,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403783582] [2021-11-20 06:16:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:19,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:16:20,311 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:16:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:16:20,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:16:20,751 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:16:20,752 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:16:20,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 06:16:20,764 INFO L732 BasicCegarLoop]: Path program histogram: [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] [2021-11-20 06:16:20,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:16:20,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:16:20 BoogieIcfgContainer [2021-11-20 06:16:20,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:16:20,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:16:20,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:16:20,961 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:16:20,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:14:01" (3/4) ... [2021-11-20 06:16:20,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:16:20,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:16:20,965 INFO L158 Benchmark]: Toolchain (without parser) took 143642.57ms. Allocated memory was 94.4MB in the beginning and 159.4MB in the end (delta: 65.0MB). Free memory was 70.2MB in the beginning and 70.9MB in the end (delta: -684.8kB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2021-11-20 06:16:20,969 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:16:20,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 773.10ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 48.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-20 06:16:20,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.08ms. Allocated memory is still 94.4MB. Free memory was 48.5MB in the beginning and 43.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:16:20,969 INFO L158 Benchmark]: Boogie Preprocessor took 97.33ms. Allocated memory is still 94.4MB. Free memory was 43.8MB in the beginning and 37.1MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 06:16:20,970 INFO L158 Benchmark]: RCFGBuilder took 3337.18ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 37.1MB in the beginning and 63.3MB in the end (delta: -26.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-11-20 06:16:20,970 INFO L158 Benchmark]: TraceAbstraction took 139303.48ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 62.5MB in the beginning and 70.9MB in the end (delta: -8.4MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2021-11-20 06:16:20,970 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 159.4MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:16:20,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 773.10ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 48.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.08ms. Allocated memory is still 94.4MB. Free memory was 48.5MB in the beginning and 43.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.33ms. Allocated memory is still 94.4MB. Free memory was 43.8MB in the beginning and 37.1MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3337.18ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 37.1MB in the beginning and 63.3MB in the end (delta: -26.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * TraceAbstraction took 139303.48ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 62.5MB in the beginning and 70.9MB in the end (delta: -8.4MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 159.4MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1668]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1353. Possible FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={4:0}] [L1077] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1081] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1082] s->ctx = malloc(sizeof(SSL_CTX)) [L1083] s->session = malloc(sizeof(SSL_SESSION)) [L1084] s->state = 12292 [L1085] s->version = __VERIFIER_nondet_int() [L1087] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1088] EXPR s->ctx [L1088] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1089] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1090] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1091] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->flags = __VERIFIER_nondet_long() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1094] EXPR s->s3 [L1094] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1096] EXPR s->s3 [L1096] (s->s3)->tmp.next_state = __VERIFIER_nondet_int() [L1098] CALL ssl3_connect(s) [L1104] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1105] unsigned long tmp ; [L1106] unsigned long l ; [L1107] long num1 ; [L1108] void (*cb)() ; [L1109] int ret ; [L1110] int new_state ; [L1111] int state ; [L1112] int skip ; [L1113] int tmp___1 = __VERIFIER_nondet_int() ; [L1114] int tmp___2 = __VERIFIER_nondet_int() ; [L1115] int tmp___3 ; [L1116] int tmp___4 ; [L1117] int tmp___5 ; [L1118] int tmp___6 ; [L1119] int tmp___7 ; [L1120] int tmp___8 ; [L1121] long tmp___9 ; [L1123] int blastFlag ; [L1126] blastFlag = 0 [L1127] s->hit=__VERIFIER_nondet_int () [L1128] s->state = 12292 [L1129] tmp = __VERIFIER_nondet_int() [L1130] cb = (void (*)())((void *)0) [L1131] ret = -1 [L1132] skip = 0 [L1133] EXPR s->info_callback VAL [={0:0}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->info_callback={0:6}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=0, tmp___2=0] [L1133] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1134] EXPR s->info_callback [L1134] cb = s->info_callback [L1142] EXPR s->in_handshake [L1142] s->in_handshake += 1 [L1143] COND FALSE !(tmp___1 & 12288) VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=0, tmp___2=0] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=0, tmp___2=0] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=12292, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0] [L1156] COND TRUE s->state == 12292 [L1259] s->new_session = 1 [L1260] s->state = 4096 [L1261] EXPR s->ctx [L1261] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1261] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1266] s->server = 0 VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0] [L1267] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0] [L1272] EXPR s->version VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->version=7, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0] [L1272] COND FALSE !((s->version & 65280) != 768) [L1278] s->type = 4096 [L1279] EXPR s->init_buf VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->init_buf={0:-14}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0] [L1279] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1291] tmp___4 = __VERIFIER_nondet_int() [L1292] COND FALSE !(! tmp___4) [L1298] tmp___5 = __VERIFIER_nondet_int() [L1299] COND FALSE !(! tmp___5) [L1305] s->state = 4368 [L1306] EXPR s->ctx [L1306] EXPR (s->ctx)->stats.sess_connect [L1306] (s->ctx)->stats.sess_connect += 1 [L1307] s->init_num = 0 VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] EXPR s->s3 [L1627] EXPR (s->s3)->tmp.reuse_message VAL [={0:6}, (s->s3)->tmp.reuse_message=4294967306, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1656] skip = 0 VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1156] COND FALSE !(s->state == 12292) [L1159] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1159] COND FALSE !(s->state == 16384) [L1162] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1162] COND FALSE !(s->state == 4096) [L1165] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1165] COND FALSE !(s->state == 20480) [L1168] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1168] COND FALSE !(s->state == 4099) [L1171] EXPR s->state VAL [={0:6}, blastFlag=0, buf={0:-3}, init=1, ret=-1, s={-9:0}, s={-9:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1171] COND TRUE s->state == 4368 [L1311] s->shutdown = 0 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 0 [L1314] blastFlag = 1 VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1318] COND FALSE !(ret <= 0) [L1323] s->state = 4384 [L1324] s->init_num = 0 [L1325] EXPR s->bbio [L1325] EXPR s->wbio VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->bbio={0:-13}, s->wbio={0:-12}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1325] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1627] EXPR s->s3 [L1627] EXPR (s->s3)->tmp.reuse_message VAL [={0:6}, (s->s3)->tmp.reuse_message=4294967306, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1656] skip = 0 VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1156] COND FALSE !(s->state == 12292) [L1159] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1159] COND FALSE !(s->state == 16384) [L1162] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1162] COND FALSE !(s->state == 4096) [L1165] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1165] COND FALSE !(s->state == 20480) [L1168] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1168] COND FALSE !(s->state == 4099) [L1171] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1171] COND FALSE !(s->state == 4368) [L1174] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1174] COND FALSE !(s->state == 4369) [L1177] EXPR s->state VAL [={0:6}, blastFlag=1, buf={0:-3}, init=1, ret=10, s={-9:0}, s={-9:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1177] COND TRUE s->state == 4384 [L1333] ret = __VERIFIER_nondet_int() [L1334] COND TRUE blastFlag == 1 [L1335] blastFlag = 2 VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1339] COND FALSE !(ret <= 0) [L1344] s->hit VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->hit=0, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1344] COND FALSE !(s->hit) [L1347] s->state = 4400 VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1349] s->init_num = 0 VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] EXPR s->s3 [L1627] EXPR (s->s3)->tmp.reuse_message VAL [={0:6}, (s->s3)->tmp.reuse_message=4294967306, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1656] skip = 0 VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1156] COND FALSE !(s->state == 12292) [L1159] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1159] COND FALSE !(s->state == 16384) [L1162] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1162] COND FALSE !(s->state == 4096) [L1165] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1165] COND FALSE !(s->state == 20480) [L1168] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1168] COND FALSE !(s->state == 4099) [L1171] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1171] COND FALSE !(s->state == 4368) [L1174] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1174] COND FALSE !(s->state == 4369) [L1177] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1177] COND FALSE !(s->state == 4384) [L1180] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1180] COND FALSE !(s->state == 4385) [L1183] EXPR s->state VAL [={0:6}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1183] COND TRUE s->state == 4400 [L1353] EXPR s->s3 [L1353] EXPR (s->s3)->tmp.new_cipher [L1353] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [={0:6}, ((s->s3)->tmp.new_cipher)->algorithms=4294967321, (s->s3)->tmp.new_cipher={-7:0}, blastFlag=2, buf={0:-3}, init=1, ret=18, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1353] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1356] ret = __VERIFIER_nondet_int() [L1357] COND TRUE blastFlag == 2 [L1358] blastFlag = 3 VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1362] COND FALSE !(ret <= 0) VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1368] s->state = 4416 [L1369] s->init_num = 0 VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] EXPR s->s3 [L1627] EXPR (s->s3)->tmp.reuse_message VAL [={0:6}, (s->s3)->tmp.reuse_message=4294967306, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1627] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1656] skip = 0 VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1156] COND FALSE !(s->state == 12292) [L1159] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1159] COND FALSE !(s->state == 16384) [L1162] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1162] COND FALSE !(s->state == 4096) [L1165] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1165] COND FALSE !(s->state == 20480) [L1168] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1168] COND FALSE !(s->state == 4099) [L1171] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1171] COND FALSE !(s->state == 4368) [L1174] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1174] COND FALSE !(s->state == 4369) [L1177] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1177] COND FALSE !(s->state == 4384) [L1180] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1180] COND FALSE !(s->state == 4385) [L1183] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1183] COND FALSE !(s->state == 4400) [L1186] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1186] COND FALSE !(s->state == 4401) [L1189] EXPR s->state VAL [={0:6}, blastFlag=3, buf={0:-3}, init=1, ret=21, s={-9:0}, s={-9:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1189] COND TRUE s->state == 4416 [L1373] ret = __VERIFIER_nondet_int() [L1374] COND TRUE blastFlag == 3 [L1375] blastFlag = 4 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1379] COND FALSE !(ret <= 0) [L1384] s->state = 4432 [L1385] s->init_num = 0 [L1386] tmp___6 = __VERIFIER_nondet_int() [L1387] COND FALSE !(! tmp___6) VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1627] EXPR s->s3 [L1627] EXPR (s->s3)->tmp.reuse_message VAL [={0:6}, (s->s3)->tmp.reuse_message=4294967306, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1627] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1656] skip = 0 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1156] COND FALSE !(s->state == 12292) [L1159] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1159] COND FALSE !(s->state == 16384) [L1162] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1162] COND FALSE !(s->state == 4096) [L1165] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1165] COND FALSE !(s->state == 20480) [L1168] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1168] COND FALSE !(s->state == 4099) [L1171] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1171] COND FALSE !(s->state == 4368) [L1174] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1174] COND FALSE !(s->state == 4369) [L1177] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1177] COND FALSE !(s->state == 4384) [L1180] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1180] COND FALSE !(s->state == 4385) [L1183] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1183] COND FALSE !(s->state == 4400) [L1186] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1186] COND FALSE !(s->state == 4401) [L1189] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1189] COND FALSE !(s->state == 4416) [L1192] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1192] COND FALSE !(s->state == 4417) [L1195] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1195] COND TRUE s->state == 4432 [L1396] ret = __VERIFIER_nondet_int() [L1397] COND FALSE !(blastFlag == 5) VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1402] COND FALSE !(ret <= 0) [L1407] s->state = 4448 [L1408] s->init_num = 0 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1627] EXPR s->s3 [L1627] EXPR (s->s3)->tmp.reuse_message VAL [={0:6}, (s->s3)->tmp.reuse_message=4294967306, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->s3={-6:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1627] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1656] skip = 0 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1153] COND TRUE 1 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1155] EXPR s->state [L1155] state = s->state [L1156] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1156] COND FALSE !(s->state == 12292) [L1159] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1159] COND FALSE !(s->state == 16384) [L1162] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1162] COND FALSE !(s->state == 4096) [L1165] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1165] COND FALSE !(s->state == 20480) [L1168] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1168] COND FALSE !(s->state == 4099) [L1171] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1171] COND FALSE !(s->state == 4368) [L1174] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1174] COND FALSE !(s->state == 4369) [L1177] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1177] COND FALSE !(s->state == 4384) [L1180] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1180] COND FALSE !(s->state == 4385) [L1183] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1183] COND FALSE !(s->state == 4400) [L1186] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1186] COND FALSE !(s->state == 4401) [L1189] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1189] COND FALSE !(s->state == 4416) [L1192] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1192] COND FALSE !(s->state == 4417) [L1195] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1195] COND FALSE !(s->state == 4432) [L1198] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1198] COND FALSE !(s->state == 4433) [L1201] EXPR s->state VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=1, s={-9:0}, s={-9:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1201] COND TRUE s->state == 4448 [L1412] ret = __VERIFIER_nondet_int() [L1413] COND TRUE blastFlag == 4 VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=-15, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1668] reach_error() VAL [={0:6}, blastFlag=4, buf={0:-3}, init=1, ret=-15, s={-9:0}, s={-9:0}, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 139.0s, OverallIterations: 35, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 133.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 61 mSolverCounterUnknown, 2403 SdHoareTripleChecker+Valid, 132.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2403 mSDsluCounter, 17140 SdHoareTripleChecker+Invalid, 129.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9478 mSDsCounter, 199 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5163 IncrementalHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 199 mSolverCounterUnsat, 7662 mSDtfsCounter, 5163 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 68 SyntacticMatches, 21 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=996occurred in iteration=34, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 34 MinimizatonAttempts, 2457 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 3271 NumberOfCodeBlocks, 3271 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3100 ConstructedInterpolants, 0 QuantifiedInterpolants, 7355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 3328/3328 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:16:21,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 781939b227b3ba0a20ad2d0323c2d13ae338349fb5c0bf292cccf74fd05cfb42 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:16:23,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:16:23,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:16:23,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:16:23,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:16:23,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:16:23,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:16:23,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:16:23,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:16:23,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:16:23,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:16:23,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:16:23,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:16:23,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:16:23,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:16:23,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:16:23,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:16:23,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:16:23,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:16:23,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:16:23,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:16:23,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:16:23,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:16:23,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:16:23,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:16:23,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:16:23,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:16:23,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:16:23,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:16:23,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:16:23,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:16:23,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:16:23,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:16:23,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:16:23,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:16:23,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:16:23,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:16:23,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:16:23,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:16:23,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:16:23,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:16:23,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 06:16:23,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:16:23,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:16:23,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:16:23,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:16:23,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:16:23,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:16:23,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:16:23,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:16:23,535 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:16:23,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:16:23,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:16:23,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:16:23,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:16:23,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:16:23,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:16:23,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:16:23,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:16:23,540 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:16:23,540 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:16:23,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:16:23,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:16:23,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:16:23,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:16:23,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:16:23,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:16:23,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:16:23,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:16:23,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:16:23,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:16:23,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:16:23,544 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:16:23,545 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:16:23,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:16:23,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:16:23,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:16:23,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:16:23,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:16:23,547 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781939b227b3ba0a20ad2d0323c2d13ae338349fb5c0bf292cccf74fd05cfb42 [2021-11-20 06:16:23,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:16:23,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:16:23,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:16:23,946 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:16:23,952 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:16:23,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2021-11-20 06:16:24,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/3efb1ded9/0a30e90b799046b390639b70a429225e/FLAGcd2a3ef4e [2021-11-20 06:16:24,736 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:16:24,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c [2021-11-20 06:16:24,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/3efb1ded9/0a30e90b799046b390639b70a429225e/FLAGcd2a3ef4e [2021-11-20 06:16:25,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/data/3efb1ded9/0a30e90b799046b390639b70a429225e [2021-11-20 06:16:25,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:16:25,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:16:25,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:16:25,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:16:25,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:16:25,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:25,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed5cdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25, skipping insertion in model container [2021-11-20 06:16:25,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:25,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:16:25,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:16:25,650 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c[65520,65533] [2021-11-20 06:16:25,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:25,685 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:16:25,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:16:25,861 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c[65520,65533] [2021-11-20 06:16:25,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:25,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:16:25,952 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_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/sv-benchmarks/c/openssl/s3_clnt.blast.01.i.cil-2.c[65520,65533] [2021-11-20 06:16:25,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:25,979 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:16:25,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25 WrapperNode [2021-11-20 06:16:25,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:16:25,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:16:25,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:16:25,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:16:25,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,095 INFO L137 Inliner]: procedures = 35, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 694 [2021-11-20 06:16:26,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:16:26,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:16:26,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:16:26,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:16:26,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:16:26,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:16:26,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:16:26,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:16:26,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (1/1) ... [2021-11-20 06:16:26,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:16:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:26,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:16:26,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:16:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:16:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:16:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:16:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:16:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:16:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:16:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:16:26,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:16:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:16:26,531 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:16:26,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:16:26,549 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 06:16:34,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-20 06:16:34,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-20 06:16:34,458 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:16:34,466 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:16:34,467 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:16:34,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:16:34 BoogieIcfgContainer [2021-11-20 06:16:34,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:16:34,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:16:34,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:16:34,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:16:34,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:16:25" (1/3) ... [2021-11-20 06:16:34,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb9949c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:16:34, skipping insertion in model container [2021-11-20 06:16:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:25" (2/3) ... [2021-11-20 06:16:34,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb9949c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:16:34, skipping insertion in model container [2021-11-20 06:16:34,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:16:34" (3/3) ... [2021-11-20 06:16:34,477 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-2.c [2021-11-20 06:16:34,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:16:34,483 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:16:34,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:16:34,539 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=PETRI_NET, 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 [2021-11-20 06:16:34,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:16:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:16:34,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:34,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:34,567 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-11-20 06:16:34,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:34,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530020845] [2021-11-20 06:16:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:34,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:34,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:34,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:34,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:16:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:34,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:16:34,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:35,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:35,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:35,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530020845] [2021-11-20 06:16:35,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530020845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:35,313 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:35,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:16:35,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130775892] [2021-11-20 06:16:35,316 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:35,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:35,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:35,388 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:35,540 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-11-20 06:16:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:16:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:35,571 INFO L225 Difference]: With dead ends: 375 [2021-11-20 06:16:35,571 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 06:16:35,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:35,585 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 363 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:35,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 397 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:16:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 06:16:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-20 06:16:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4814814814814814) internal successors, (320), 216 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2021-11-20 06:16:35,675 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2021-11-20 06:16:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:35,676 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-11-20 06:16:35,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2021-11-20 06:16:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-20 06:16:35,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:35,680 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:16:35,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:35,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:35,891 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:35,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2021-11-20 06:16:35,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:35,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657974352] [2021-11-20 06:16:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:35,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:35,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:35,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:16:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:16:36,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:36,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:36,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657974352] [2021-11-20 06:16:36,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657974352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:36,671 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:36,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:16:36,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677555432] [2021-11-20 06:16:36,671 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:36,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:36,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:36,674 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:38,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:38,876 INFO L93 Difference]: Finished difference Result 628 states and 933 transitions. [2021-11-20 06:16:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-20 06:16:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:38,881 INFO L225 Difference]: With dead ends: 628 [2021-11-20 06:16:38,882 INFO L226 Difference]: Without dead ends: 521 [2021-11-20 06:16:38,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:38,884 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 252 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:38,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 762 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 06:16:38,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-20 06:16:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 421. [2021-11-20 06:16:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.480952380952381) internal successors, (622), 420 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2021-11-20 06:16:38,937 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2021-11-20 06:16:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:38,937 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2021-11-20 06:16:38,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2021-11-20 06:16:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:16:38,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:38,944 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:38,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:39,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:39,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2021-11-20 06:16:39,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:39,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915243299] [2021-11-20 06:16:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:39,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:39,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:39,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:39,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:16:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:39,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:16:39,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:16:39,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:16:40,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:40,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915243299] [2021-11-20 06:16:40,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915243299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:40,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:40,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:16:40,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969404625] [2021-11-20 06:16:40,119 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:40,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:40,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:40,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:40,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:40,120 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:42,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:42,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:42,284 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2021-11-20 06:16:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:16:42,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 06:16:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:42,290 INFO L225 Difference]: With dead ends: 939 [2021-11-20 06:16:42,290 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 06:16:42,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:42,294 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 273 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:42,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 609 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:16:42,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 06:16:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-11-20 06:16:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.4784688995215312) internal successors, (927), 627 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2021-11-20 06:16:42,335 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2021-11-20 06:16:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:42,336 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2021-11-20 06:16:42,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2021-11-20 06:16:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 06:16:42,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:42,343 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-20 06:16:42,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:42,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:42,558 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2021-11-20 06:16:42,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:42,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995523955] [2021-11-20 06:16:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:42,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:42,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:42,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a8ea01-2fdc-4eeb-b261-d1ab8e4ba828/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:16:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:43,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:16:43,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:12,293 WARN L227 SmtUtils]: Spent 28.84s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:17:12,294 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:17:12,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 4938 treesize of output 4458 [2021-11-20 06:17:52,595 WARN L227 SmtUtils]: Spent 40.26s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:17:52,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:17:52,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4355 treesize of output 3963