./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0237d7665f4c4183d0858d7577c1caaad788a36b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:44,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:44,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:44,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:44,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:44,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:44,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:44,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:44,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:44,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:44,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:44,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:44,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:44,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:44,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:44,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:44,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:44,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:44,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:44,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:44,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:44,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:44,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:44,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:45,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:45,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:45,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:45,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:45,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:45,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:45,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:45,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:45,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:45,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:45,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:45,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:45,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:45,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:45,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:45,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:45,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:45,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:45,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:45,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:45,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:45,057 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:45,058 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:45,058 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:45,058 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:45,058 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:45,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:45,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:45,059 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:45,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:45,059 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:45,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:45,060 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:45,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:45,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:45,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:45,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:45,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:45,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:45,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:45,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:45,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:45,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:45,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:45,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:45,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:45,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:45,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:45,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:45,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:45,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:45,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:45,065 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:45,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:45,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:45,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:45,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:45,067 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0237d7665f4c4183d0858d7577c1caaad788a36b [2021-10-11 02:20:45,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:45,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:45,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:45,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:45,386 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:45,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2021-10-11 02:20:45,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/data/60effdc03/378205ce52544b3387ed798f2f82e042/FLAGca2e7c8a4 [2021-10-11 02:20:45,940 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:45,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2021-10-11 02:20:45,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/data/60effdc03/378205ce52544b3387ed798f2f82e042/FLAGca2e7c8a4 [2021-10-11 02:20:46,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/data/60effdc03/378205ce52544b3387ed798f2f82e042 [2021-10-11 02:20:46,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:46,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:46,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:46,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:46,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:46,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77232eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46, skipping insertion in model container [2021-10-11 02:20:46,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:46,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:46,572 WARN L226 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_8e5266f8-6b61-4bb2-9952-b857f19f09ea/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[34967,34980] [2021-10-11 02:20:46,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:46,587 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:46,669 WARN L226 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_8e5266f8-6b61-4bb2-9952-b857f19f09ea/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[34967,34980] [2021-10-11 02:20:46,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:46,699 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:46,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46 WrapperNode [2021-10-11 02:20:46,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:46,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:46,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:46,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:46,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:46,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:46,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:46,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:46,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... [2021-10-11 02:20:46,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:46,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:46,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:46,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:46,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:47,106 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 02:20:47,750 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-11 02:20:47,750 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-11 02:20:48,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:48,191 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:20:48,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:48 BoogieIcfgContainer [2021-10-11 02:20:48,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:48,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:48,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:48,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:48,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:46" (1/3) ... [2021-10-11 02:20:48,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308d34f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:48, skipping insertion in model container [2021-10-11 02:20:48,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:46" (2/3) ... [2021-10-11 02:20:48,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308d34f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:48, skipping insertion in model container [2021-10-11 02:20:48,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:48" (3/3) ... [2021-10-11 02:20:48,202 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-1.c [2021-10-11 02:20:48,215 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:48,219 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:48,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:48,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:48,255 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:48,255 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:48,255 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:48,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:48,255 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:48,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:48,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2021-10-11 02:20:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:20:48,275 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:48,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:48,276 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:48,281 INFO L82 PathProgramCache]: Analyzing trace with hash -642240666, now seen corresponding path program 1 times [2021-10-11 02:20:48,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:48,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735313501] [2021-10-11 02:20:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:48,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735313501] [2021-10-11 02:20:48,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:48,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:48,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462900780] [2021-10-11 02:20:48,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:48,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:48,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:48,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:48,547 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2021-10-11 02:20:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:48,785 INFO L93 Difference]: Finished difference Result 196 states and 338 transitions. [2021-10-11 02:20:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:48,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:20:48,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:48,811 INFO L225 Difference]: With dead ends: 196 [2021-10-11 02:20:48,814 INFO L226 Difference]: Without dead ends: 107 [2021-10-11 02:20:48,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-11 02:20:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2021-10-11 02:20:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-10-11 02:20:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 155 transitions. [2021-10-11 02:20:48,883 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 155 transitions. Word has length 19 [2021-10-11 02:20:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:48,884 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 155 transitions. [2021-10-11 02:20:48,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 155 transitions. [2021-10-11 02:20:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:20:48,888 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:48,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:48,889 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:48,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1560868595, now seen corresponding path program 1 times [2021-10-11 02:20:48,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:48,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729431776] [2021-10-11 02:20:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:48,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729431776] [2021-10-11 02:20:49,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:49,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:49,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732655399] [2021-10-11 02:20:49,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:49,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:49,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,003 INFO L87 Difference]: Start difference. First operand 102 states and 155 transitions. Second operand 3 states. [2021-10-11 02:20:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:49,178 INFO L93 Difference]: Finished difference Result 230 states and 354 transitions. [2021-10-11 02:20:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:49,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-10-11 02:20:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:49,187 INFO L225 Difference]: With dead ends: 230 [2021-10-11 02:20:49,187 INFO L226 Difference]: Without dead ends: 129 [2021-10-11 02:20:49,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-11 02:20:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2021-10-11 02:20:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-10-11 02:20:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 194 transitions. [2021-10-11 02:20:49,237 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 194 transitions. Word has length 20 [2021-10-11 02:20:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:49,237 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 194 transitions. [2021-10-11 02:20:49,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 194 transitions. [2021-10-11 02:20:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 02:20:49,240 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:49,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:20:49,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:49,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:49,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1709113557, now seen corresponding path program 1 times [2021-10-11 02:20:49,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:49,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160032712] [2021-10-11 02:20:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:49,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160032712] [2021-10-11 02:20:49,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:49,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:49,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949719834] [2021-10-11 02:20:49,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:49,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:49,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:49,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,304 INFO L87 Difference]: Start difference. First operand 124 states and 194 transitions. Second operand 3 states. [2021-10-11 02:20:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:49,424 INFO L93 Difference]: Finished difference Result 268 states and 423 transitions. [2021-10-11 02:20:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:49,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-10-11 02:20:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:49,425 INFO L225 Difference]: With dead ends: 268 [2021-10-11 02:20:49,426 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:20:49,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:20:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-10-11 02:20:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-10-11 02:20:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 226 transitions. [2021-10-11 02:20:49,436 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 226 transitions. Word has length 37 [2021-10-11 02:20:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:49,436 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 226 transitions. [2021-10-11 02:20:49,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 226 transitions. [2021-10-11 02:20:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:20:49,439 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:49,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:49,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:49,439 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1517239234, now seen corresponding path program 1 times [2021-10-11 02:20:49,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:49,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50337615] [2021-10-11 02:20:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:49,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50337615] [2021-10-11 02:20:49,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:49,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:49,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486943222] [2021-10-11 02:20:49,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:49,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:49,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:49,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,489 INFO L87 Difference]: Start difference. First operand 143 states and 226 transitions. Second operand 3 states. [2021-10-11 02:20:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:49,603 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2021-10-11 02:20:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:49,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-10-11 02:20:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:49,605 INFO L225 Difference]: With dead ends: 287 [2021-10-11 02:20:49,605 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:20:49,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:20:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-10-11 02:20:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-10-11 02:20:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 224 transitions. [2021-10-11 02:20:49,615 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 224 transitions. Word has length 38 [2021-10-11 02:20:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:49,615 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 224 transitions. [2021-10-11 02:20:49,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 224 transitions. [2021-10-11 02:20:49,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:20:49,617 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:49,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:49,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:49,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:49,618 INFO L82 PathProgramCache]: Analyzing trace with hash 621720273, now seen corresponding path program 1 times [2021-10-11 02:20:49,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:49,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204602913] [2021-10-11 02:20:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-11 02:20:49,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204602913] [2021-10-11 02:20:49,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:49,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:49,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100649273] [2021-10-11 02:20:49,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:49,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,665 INFO L87 Difference]: Start difference. First operand 143 states and 224 transitions. Second operand 3 states. [2021-10-11 02:20:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:49,790 INFO L93 Difference]: Finished difference Result 305 states and 481 transitions. [2021-10-11 02:20:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:49,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-10-11 02:20:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:49,792 INFO L225 Difference]: With dead ends: 305 [2021-10-11 02:20:49,793 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:20:49,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:20:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2021-10-11 02:20:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-10-11 02:20:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 251 transitions. [2021-10-11 02:20:49,803 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 251 transitions. Word has length 52 [2021-10-11 02:20:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:49,803 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 251 transitions. [2021-10-11 02:20:49,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 251 transitions. [2021-10-11 02:20:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-11 02:20:49,805 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:49,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:49,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:20:49,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:49,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1103947868, now seen corresponding path program 1 times [2021-10-11 02:20:49,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:49,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451335260] [2021-10-11 02:20:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-11 02:20:49,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451335260] [2021-10-11 02:20:49,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:49,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:49,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051505690] [2021-10-11 02:20:49,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:49,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:49,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:49,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:49,868 INFO L87 Difference]: Start difference. First operand 160 states and 251 transitions. Second operand 3 states. [2021-10-11 02:20:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:50,017 INFO L93 Difference]: Finished difference Result 322 states and 505 transitions. [2021-10-11 02:20:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:50,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2021-10-11 02:20:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:50,019 INFO L225 Difference]: With dead ends: 322 [2021-10-11 02:20:50,019 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:20:50,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:20:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2021-10-11 02:20:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-10-11 02:20:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 248 transitions. [2021-10-11 02:20:50,039 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 248 transitions. Word has length 53 [2021-10-11 02:20:50,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:50,040 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 248 transitions. [2021-10-11 02:20:50,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 248 transitions. [2021-10-11 02:20:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:20:50,043 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:50,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:50,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:20:50,044 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:50,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:50,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1985003595, now seen corresponding path program 1 times [2021-10-11 02:20:50,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:50,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693470334] [2021-10-11 02:20:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:50,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693470334] [2021-10-11 02:20:50,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:50,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:50,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348891017] [2021-10-11 02:20:50,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:50,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:50,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:50,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,149 INFO L87 Difference]: Start difference. First operand 160 states and 248 transitions. Second operand 3 states. [2021-10-11 02:20:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:50,328 INFO L93 Difference]: Finished difference Result 358 states and 562 transitions. [2021-10-11 02:20:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:50,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:20:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:50,330 INFO L225 Difference]: With dead ends: 358 [2021-10-11 02:20:50,330 INFO L226 Difference]: Without dead ends: 198 [2021-10-11 02:20:50,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-11 02:20:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-11 02:20:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-10-11 02:20:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 313 transitions. [2021-10-11 02:20:50,339 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 313 transitions. Word has length 56 [2021-10-11 02:20:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:50,339 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 313 transitions. [2021-10-11 02:20:50,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 313 transitions. [2021-10-11 02:20:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-11 02:20:50,340 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:50,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:50,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:20:50,341 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1379473108, now seen corresponding path program 1 times [2021-10-11 02:20:50,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:50,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669415623] [2021-10-11 02:20:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:20:50,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669415623] [2021-10-11 02:20:50,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:50,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:50,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451046525] [2021-10-11 02:20:50,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:50,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,430 INFO L87 Difference]: Start difference. First operand 198 states and 313 transitions. Second operand 3 states. [2021-10-11 02:20:50,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:50,555 INFO L93 Difference]: Finished difference Result 412 states and 653 transitions. [2021-10-11 02:20:50,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:50,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-10-11 02:20:50,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:50,560 INFO L225 Difference]: With dead ends: 412 [2021-10-11 02:20:50,560 INFO L226 Difference]: Without dead ends: 215 [2021-10-11 02:20:50,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-11 02:20:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2021-10-11 02:20:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-10-11 02:20:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 334 transitions. [2021-10-11 02:20:50,570 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 334 transitions. Word has length 65 [2021-10-11 02:20:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:50,570 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 334 transitions. [2021-10-11 02:20:50,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 334 transitions. [2021-10-11 02:20:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-11 02:20:50,572 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:50,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:50,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:20:50,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1971122215, now seen corresponding path program 1 times [2021-10-11 02:20:50,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:50,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449017377] [2021-10-11 02:20:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:20:50,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449017377] [2021-10-11 02:20:50,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:50,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:50,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223890198] [2021-10-11 02:20:50,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:50,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:50,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:50,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,651 INFO L87 Difference]: Start difference. First operand 213 states and 334 transitions. Second operand 3 states. [2021-10-11 02:20:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:50,789 INFO L93 Difference]: Finished difference Result 427 states and 669 transitions. [2021-10-11 02:20:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:50,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-10-11 02:20:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:50,792 INFO L225 Difference]: With dead ends: 427 [2021-10-11 02:20:50,792 INFO L226 Difference]: Without dead ends: 215 [2021-10-11 02:20:50,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-11 02:20:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2021-10-11 02:20:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-10-11 02:20:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 329 transitions. [2021-10-11 02:20:50,803 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 329 transitions. Word has length 66 [2021-10-11 02:20:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:50,806 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 329 transitions. [2021-10-11 02:20:50,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 329 transitions. [2021-10-11 02:20:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:20:50,807 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:50,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2021-10-11 02:20:50,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:20:50,807 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:50,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:50,807 INFO L82 PathProgramCache]: Analyzing trace with hash 15467357, now seen corresponding path program 1 times [2021-10-11 02:20:50,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:50,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562854146] [2021-10-11 02:20:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:20:50,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562854146] [2021-10-11 02:20:50,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:50,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:50,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986579933] [2021-10-11 02:20:50,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:50,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:50,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,863 INFO L87 Difference]: Start difference. First operand 213 states and 329 transitions. Second operand 3 states. [2021-10-11 02:20:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:50,989 INFO L93 Difference]: Finished difference Result 440 states and 681 transitions. [2021-10-11 02:20:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:50,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:20:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:50,994 INFO L225 Difference]: With dead ends: 440 [2021-10-11 02:20:50,994 INFO L226 Difference]: Without dead ends: 228 [2021-10-11 02:20:50,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-11 02:20:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2021-10-11 02:20:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-10-11 02:20:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 345 transitions. [2021-10-11 02:20:51,007 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 345 transitions. Word has length 76 [2021-10-11 02:20:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:51,007 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 345 transitions. [2021-10-11 02:20:51,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 345 transitions. [2021-10-11 02:20:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:20:51,011 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:51,011 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-10-11 02:20:51,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:20:51,012 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:51,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1331398128, now seen corresponding path program 1 times [2021-10-11 02:20:51,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:51,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052076810] [2021-10-11 02:20:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:20:51,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052076810] [2021-10-11 02:20:51,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:51,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:51,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786366604] [2021-10-11 02:20:51,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:51,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:51,073 INFO L87 Difference]: Start difference. First operand 226 states and 345 transitions. Second operand 3 states. [2021-10-11 02:20:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:51,199 INFO L93 Difference]: Finished difference Result 453 states and 691 transitions. [2021-10-11 02:20:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:51,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:20:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:51,202 INFO L225 Difference]: With dead ends: 453 [2021-10-11 02:20:51,202 INFO L226 Difference]: Without dead ends: 228 [2021-10-11 02:20:51,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:51,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-11 02:20:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2021-10-11 02:20:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-10-11 02:20:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 339 transitions. [2021-10-11 02:20:51,215 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 339 transitions. Word has length 77 [2021-10-11 02:20:51,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:51,215 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 339 transitions. [2021-10-11 02:20:51,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 339 transitions. [2021-10-11 02:20:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-11 02:20:51,220 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:51,220 INFO L422 BasicCegarLoop]: trace histogram [6, 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] [2021-10-11 02:20:51,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:20:51,221 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:51,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1242830316, now seen corresponding path program 1 times [2021-10-11 02:20:51,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:51,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035048928] [2021-10-11 02:20:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-11 02:20:51,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035048928] [2021-10-11 02:20:51,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286675343] [2021-10-11 02:20:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:51,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:20:51,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:20:51,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-11 02:20:51,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:20:51,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 5 [2021-10-11 02:20:51,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122553879] [2021-10-11 02:20:51,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:51,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:51,856 INFO L87 Difference]: Start difference. First operand 226 states and 339 transitions. Second operand 3 states. [2021-10-11 02:20:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:51,893 INFO L93 Difference]: Finished difference Result 450 states and 676 transitions. [2021-10-11 02:20:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:51,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2021-10-11 02:20:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:51,897 INFO L225 Difference]: With dead ends: 450 [2021-10-11 02:20:51,897 INFO L226 Difference]: Without dead ends: 448 [2021-10-11 02:20:51,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-11 02:20:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2021-10-11 02:20:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2021-10-11 02:20:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 673 transitions. [2021-10-11 02:20:51,921 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 673 transitions. Word has length 85 [2021-10-11 02:20:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:51,921 INFO L481 AbstractCegarLoop]: Abstraction has 447 states and 673 transitions. [2021-10-11 02:20:51,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 673 transitions. [2021-10-11 02:20:51,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-11 02:20:51,925 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:51,925 INFO L422 BasicCegarLoop]: trace histogram [7, 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] [2021-10-11 02:20:52,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:20:52,138 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:52,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:52,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2138752152, now seen corresponding path program 1 times [2021-10-11 02:20:52,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:52,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945202822] [2021-10-11 02:20:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-11 02:20:52,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945202822] [2021-10-11 02:20:52,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:52,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:52,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605483377] [2021-10-11 02:20:52,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:52,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:52,198 INFO L87 Difference]: Start difference. First operand 447 states and 673 transitions. Second operand 3 states. [2021-10-11 02:20:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:52,354 INFO L93 Difference]: Finished difference Result 722 states and 1081 transitions. [2021-10-11 02:20:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:52,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2021-10-11 02:20:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:52,358 INFO L225 Difference]: With dead ends: 722 [2021-10-11 02:20:52,358 INFO L226 Difference]: Without dead ends: 497 [2021-10-11 02:20:52,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-10-11 02:20:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 495. [2021-10-11 02:20:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2021-10-11 02:20:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 737 transitions. [2021-10-11 02:20:52,383 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 737 transitions. Word has length 106 [2021-10-11 02:20:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:52,384 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 737 transitions. [2021-10-11 02:20:52,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 737 transitions. [2021-10-11 02:20:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:20:52,387 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:52,387 INFO L422 BasicCegarLoop]: trace histogram [7, 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] [2021-10-11 02:20:52,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:20:52,387 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1661160923, now seen corresponding path program 1 times [2021-10-11 02:20:52,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:52,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272575932] [2021-10-11 02:20:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-11 02:20:52,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272575932] [2021-10-11 02:20:52,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:52,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:52,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158926012] [2021-10-11 02:20:52,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:52,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:52,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:52,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:52,467 INFO L87 Difference]: Start difference. First operand 495 states and 737 transitions. Second operand 3 states. [2021-10-11 02:20:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:52,629 INFO L93 Difference]: Finished difference Result 748 states and 1113 transitions. [2021-10-11 02:20:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:52,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:20:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:52,633 INFO L225 Difference]: With dead ends: 748 [2021-10-11 02:20:52,633 INFO L226 Difference]: Without dead ends: 499 [2021-10-11 02:20:52,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-11 02:20:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2021-10-11 02:20:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2021-10-11 02:20:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 737 transitions. [2021-10-11 02:20:52,656 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 737 transitions. Word has length 107 [2021-10-11 02:20:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:52,657 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 737 transitions. [2021-10-11 02:20:52,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 737 transitions. [2021-10-11 02:20:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-11 02:20:52,660 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:52,660 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 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, 1, 1] [2021-10-11 02:20:52,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:20:52,660 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:52,661 INFO L82 PathProgramCache]: Analyzing trace with hash -968145497, now seen corresponding path program 1 times [2021-10-11 02:20:52,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:52,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356565917] [2021-10-11 02:20:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-10-11 02:20:52,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356565917] [2021-10-11 02:20:52,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:52,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:52,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822224233] [2021-10-11 02:20:52,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:52,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:52,727 INFO L87 Difference]: Start difference. First operand 497 states and 737 transitions. Second operand 3 states. [2021-10-11 02:20:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:52,907 INFO L93 Difference]: Finished difference Result 1089 states and 1629 transitions. [2021-10-11 02:20:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:52,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2021-10-11 02:20:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:52,911 INFO L225 Difference]: With dead ends: 1089 [2021-10-11 02:20:52,912 INFO L226 Difference]: Without dead ends: 593 [2021-10-11 02:20:52,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-10-11 02:20:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 589. [2021-10-11 02:20:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2021-10-11 02:20:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 885 transitions. [2021-10-11 02:20:52,954 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 885 transitions. Word has length 176 [2021-10-11 02:20:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:52,954 INFO L481 AbstractCegarLoop]: Abstraction has 589 states and 885 transitions. [2021-10-11 02:20:52,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 885 transitions. [2021-10-11 02:20:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-11 02:20:52,957 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:52,957 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:52,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:20:52,958 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:52,958 INFO L82 PathProgramCache]: Analyzing trace with hash -437708390, now seen corresponding path program 1 times [2021-10-11 02:20:52,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:52,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718444995] [2021-10-11 02:20:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-10-11 02:20:53,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718444995] [2021-10-11 02:20:53,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:53,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:53,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37940873] [2021-10-11 02:20:53,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:53,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:53,036 INFO L87 Difference]: Start difference. First operand 589 states and 885 transitions. Second operand 3 states. [2021-10-11 02:20:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:53,224 INFO L93 Difference]: Finished difference Result 1183 states and 1777 transitions. [2021-10-11 02:20:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:53,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2021-10-11 02:20:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:53,228 INFO L225 Difference]: With dead ends: 1183 [2021-10-11 02:20:53,228 INFO L226 Difference]: Without dead ends: 595 [2021-10-11 02:20:53,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-10-11 02:20:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 591. [2021-10-11 02:20:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2021-10-11 02:20:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 885 transitions. [2021-10-11 02:20:53,253 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 885 transitions. Word has length 177 [2021-10-11 02:20:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:53,253 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 885 transitions. [2021-10-11 02:20:53,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 885 transitions. [2021-10-11 02:20:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-11 02:20:53,256 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:53,257 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:53,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:20:53,257 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash 122905980, now seen corresponding path program 1 times [2021-10-11 02:20:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:53,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651063497] [2021-10-11 02:20:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-10-11 02:20:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651063497] [2021-10-11 02:20:53,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:53,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:53,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036389787] [2021-10-11 02:20:53,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:53,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:53,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:53,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:53,358 INFO L87 Difference]: Start difference. First operand 591 states and 885 transitions. Second operand 3 states. [2021-10-11 02:20:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:53,557 INFO L93 Difference]: Finished difference Result 1281 states and 1913 transitions. [2021-10-11 02:20:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:53,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2021-10-11 02:20:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:53,561 INFO L225 Difference]: With dead ends: 1281 [2021-10-11 02:20:53,562 INFO L226 Difference]: Without dead ends: 673 [2021-10-11 02:20:53,563 INFO L677 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 [2021-10-11 02:20:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-10-11 02:20:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 653. [2021-10-11 02:20:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2021-10-11 02:20:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 919 transitions. [2021-10-11 02:20:53,591 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 919 transitions. Word has length 192 [2021-10-11 02:20:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:53,592 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 919 transitions. [2021-10-11 02:20:53,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 919 transitions. [2021-10-11 02:20:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-11 02:20:53,595 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:53,595 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:53,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:20:53,595 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1105866763, now seen corresponding path program 1 times [2021-10-11 02:20:53,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:53,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232516189] [2021-10-11 02:20:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-10-11 02:20:53,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232516189] [2021-10-11 02:20:53,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:53,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:53,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983960409] [2021-10-11 02:20:53,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:53,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:53,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:53,703 INFO L87 Difference]: Start difference. First operand 653 states and 919 transitions. Second operand 3 states. [2021-10-11 02:20:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:53,900 INFO L93 Difference]: Finished difference Result 1427 states and 2007 transitions. [2021-10-11 02:20:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:53,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2021-10-11 02:20:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:53,905 INFO L225 Difference]: With dead ends: 1427 [2021-10-11 02:20:53,905 INFO L226 Difference]: Without dead ends: 775 [2021-10-11 02:20:53,907 INFO L677 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 [2021-10-11 02:20:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-10-11 02:20:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 677. [2021-10-11 02:20:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2021-10-11 02:20:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2021-10-11 02:20:53,938 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 194 [2021-10-11 02:20:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:53,939 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2021-10-11 02:20:53,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2021-10-11 02:20:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-10-11 02:20:53,942 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:53,943 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:53,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-11 02:20:53,943 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:53,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:53,944 INFO L82 PathProgramCache]: Analyzing trace with hash 798770342, now seen corresponding path program 1 times [2021-10-11 02:20:53,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:53,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808863777] [2021-10-11 02:20:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-11 02:20:54,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808863777] [2021-10-11 02:20:54,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:54,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:54,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629426935] [2021-10-11 02:20:54,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:54,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:54,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:54,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:54,060 INFO L87 Difference]: Start difference. First operand 677 states and 947 transitions. Second operand 3 states. [2021-10-11 02:20:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:54,288 INFO L93 Difference]: Finished difference Result 1426 states and 1993 transitions. [2021-10-11 02:20:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:54,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2021-10-11 02:20:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:54,293 INFO L225 Difference]: With dead ends: 1426 [2021-10-11 02:20:54,294 INFO L226 Difference]: Without dead ends: 740 [2021-10-11 02:20:54,295 INFO L677 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 [2021-10-11 02:20:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-11 02:20:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 720. [2021-10-11 02:20:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2021-10-11 02:20:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 997 transitions. [2021-10-11 02:20:54,330 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 997 transitions. Word has length 219 [2021-10-11 02:20:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:54,331 INFO L481 AbstractCegarLoop]: Abstraction has 720 states and 997 transitions. [2021-10-11 02:20:54,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 997 transitions. [2021-10-11 02:20:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-10-11 02:20:54,336 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:54,336 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:54,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-11 02:20:54,336 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:54,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:54,337 INFO L82 PathProgramCache]: Analyzing trace with hash 205455096, now seen corresponding path program 1 times [2021-10-11 02:20:54,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:54,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97528112] [2021-10-11 02:20:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2021-10-11 02:20:54,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97528112] [2021-10-11 02:20:54,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:54,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:54,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998837240] [2021-10-11 02:20:54,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:54,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:54,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:54,480 INFO L87 Difference]: Start difference. First operand 720 states and 997 transitions. Second operand 3 states. [2021-10-11 02:20:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:54,673 INFO L93 Difference]: Finished difference Result 1454 states and 2009 transitions. [2021-10-11 02:20:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:54,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2021-10-11 02:20:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:54,678 INFO L225 Difference]: With dead ends: 1454 [2021-10-11 02:20:54,678 INFO L226 Difference]: Without dead ends: 740 [2021-10-11 02:20:54,679 INFO L677 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 [2021-10-11 02:20:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-11 02:20:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 720. [2021-10-11 02:20:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2021-10-11 02:20:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 989 transitions. [2021-10-11 02:20:54,726 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 989 transitions. Word has length 252 [2021-10-11 02:20:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:54,727 INFO L481 AbstractCegarLoop]: Abstraction has 720 states and 989 transitions. [2021-10-11 02:20:54,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 989 transitions. [2021-10-11 02:20:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-10-11 02:20:54,731 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:54,732 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:54,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-11 02:20:54,732 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1538258157, now seen corresponding path program 1 times [2021-10-11 02:20:54,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:54,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051612388] [2021-10-11 02:20:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 291 proven. 266 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-10-11 02:20:54,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051612388] [2021-10-11 02:20:54,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325010944] [2021-10-11 02:20:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:55,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:20:55,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 308 proven. 17 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-10-11 02:20:55,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 308 proven. 17 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-10-11 02:20:55,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891610378] [2021-10-11 02:20:55,773 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-10-11 02:20:55,774 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:20:55,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:20:55,785 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:20:55,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:21:13,640 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2021-10-11 02:21:13,951 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2021-10-11 02:21:14,303 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2021-10-11 02:21:14,558 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2021-10-11 02:21:15,070 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-10-11 02:21:15,202 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-10-11 02:21:15,391 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 228 [2021-10-11 02:21:15,611 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:21:15,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:21:15,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2021-10-11 02:21:15,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234028911] [2021-10-11 02:21:15,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:21:15,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:15,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:21:15,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:21:15,616 INFO L87 Difference]: Start difference. First operand 720 states and 989 transitions. Second operand 10 states. [2021-10-11 02:21:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:17,325 INFO L93 Difference]: Finished difference Result 2783 states and 3771 transitions. [2021-10-11 02:21:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-11 02:21:17,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 256 [2021-10-11 02:21:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:17,336 INFO L225 Difference]: With dead ends: 2783 [2021-10-11 02:21:17,336 INFO L226 Difference]: Without dead ends: 1809 [2021-10-11 02:21:17,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-10-11 02:21:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-10-11 02:21:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 827. [2021-10-11 02:21:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2021-10-11 02:21:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1085 transitions. [2021-10-11 02:21:17,387 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1085 transitions. Word has length 256 [2021-10-11 02:21:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:17,387 INFO L481 AbstractCegarLoop]: Abstraction has 827 states and 1085 transitions. [2021-10-11 02:21:17,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:21:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1085 transitions. [2021-10-11 02:21:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-10-11 02:21:17,393 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:17,393 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:17,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:17,614 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:17,615 INFO L82 PathProgramCache]: Analyzing trace with hash 25813171, now seen corresponding path program 1 times [2021-10-11 02:21:17,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:17,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950992177] [2021-10-11 02:21:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 847 proven. 42 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-10-11 02:21:17,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950992177] [2021-10-11 02:21:17,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598135622] [2021-10-11 02:21:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:21:17,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 769 proven. 120 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-10-11 02:21:18,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 847 proven. 42 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-10-11 02:21:18,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1212939281] [2021-10-11 02:21:18,720 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-10-11 02:21:18,720 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:21:18,721 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:21:18,721 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:21:18,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:21:22,863 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2021-10-11 02:21:23,179 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2021-10-11 02:21:23,563 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2021-10-11 02:21:23,710 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2021-10-11 02:21:24,056 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2021-10-11 02:21:24,551 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2021-10-11 02:21:24,708 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 233 [2021-10-11 02:21:24,730 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:21:24,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:21:24,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-10-11 02:21:24,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647685635] [2021-10-11 02:21:24,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:21:24,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:24,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:21:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:24,737 INFO L87 Difference]: Start difference. First operand 827 states and 1085 transitions. Second operand 9 states. [2021-10-11 02:21:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:25,708 INFO L93 Difference]: Finished difference Result 1816 states and 2362 transitions. [2021-10-11 02:21:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:21:25,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2021-10-11 02:21:25,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:25,710 INFO L225 Difference]: With dead ends: 1816 [2021-10-11 02:21:25,710 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:25,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:21:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:25,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 287 [2021-10-11 02:21:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:25,714 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:25,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:21:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:25,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:25,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-11 02:21:25,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:21:26,110 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 105 [2021-10-11 02:21:26,232 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 104 [2021-10-11 02:21:26,600 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 12 [2021-10-11 02:21:27,350 WARN L197 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2021-10-11 02:21:28,180 WARN L197 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-10-11 02:21:28,302 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 14 [2021-10-11 02:21:28,496 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2021-10-11 02:21:28,709 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 23 [2021-10-11 02:21:28,812 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2021-10-11 02:21:28,942 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 14 [2021-10-11 02:21:29,082 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2021-10-11 02:21:29,279 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-10-11 02:21:29,401 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 14 [2021-10-11 02:21:29,441 INFO L258 CegarLoopResult]: At program point L168(lines 164 494) the Hoare annotation is: (let ((.cse0 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512))) (or (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse1))) [2021-10-11 02:21:29,442 INFO L262 CegarLoopResult]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-10-11 02:21:29,442 INFO L262 CegarLoopResult]: For program point L367(lines 367 369) no Hoare annotation was computed. [2021-10-11 02:21:29,442 INFO L262 CegarLoopResult]: For program point L170(lines 170 492) no Hoare annotation was computed. [2021-10-11 02:21:29,442 INFO L262 CegarLoopResult]: For program point L137(lines 137 503) no Hoare annotation was computed. [2021-10-11 02:21:29,442 INFO L262 CegarLoopResult]: For program point L104(lines 104 514) no Hoare annotation was computed. [2021-10-11 02:21:29,443 INFO L258 CegarLoopResult]: At program point L138(lines 134 504) the Hoare annotation is: (and (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433)) (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384)) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448)) (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2021-10-11 02:21:29,443 INFO L265 CegarLoopResult]: At program point L535(lines 97 536) the Hoare annotation is: true [2021-10-11 02:21:29,443 INFO L262 CegarLoopResult]: For program point L238(lines 238 241) no Hoare annotation was computed. [2021-10-11 02:21:29,443 INFO L262 CegarLoopResult]: For program point L305(lines 305 308) no Hoare annotation was computed. [2021-10-11 02:21:29,443 INFO L258 CegarLoopResult]: At program point L206(lines 104 514) the Hoare annotation is: (and (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433)) (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384)) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4529 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448)) (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416)) (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0))) [2021-10-11 02:21:29,444 INFO L262 CegarLoopResult]: For program point L173(lines 173 491) no Hoare annotation was computed. [2021-10-11 02:21:29,444 INFO L262 CegarLoopResult]: For program point L140(lines 140 502) no Hoare annotation was computed. [2021-10-11 02:21:29,444 INFO L262 CegarLoopResult]: For program point L107(lines 107 513) no Hoare annotation was computed. [2021-10-11 02:21:29,444 INFO L258 CegarLoopResult]: At program point L174(lines 170 492) the Hoare annotation is: (let ((.cse0 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512))) (or (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse1))) [2021-10-11 02:21:29,444 INFO L262 CegarLoopResult]: For program point L440(lines 440 451) no Hoare annotation was computed. [2021-10-11 02:21:29,445 INFO L262 CegarLoopResult]: For program point L440-2(lines 440 451) no Hoare annotation was computed. [2021-10-11 02:21:29,445 INFO L262 CegarLoopResult]: For program point L176(lines 176 490) no Hoare annotation was computed. [2021-10-11 02:21:29,445 INFO L262 CegarLoopResult]: For program point L143(lines 143 501) no Hoare annotation was computed. [2021-10-11 02:21:29,445 INFO L262 CegarLoopResult]: For program point L110(lines 110 512) no Hoare annotation was computed. [2021-10-11 02:21:29,445 INFO L258 CegarLoopResult]: At program point L144(lines 140 502) the Hoare annotation is: (and (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384)) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448)) (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416)) (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2021-10-11 02:21:29,445 INFO L262 CegarLoopResult]: For program point L343(lines 343 345) no Hoare annotation was computed. [2021-10-11 02:21:29,446 INFO L262 CegarLoopResult]: For program point L377(lines 377 379) no Hoare annotation was computed. [2021-10-11 02:21:29,446 INFO L262 CegarLoopResult]: For program point L179(lines 179 489) no Hoare annotation was computed. [2021-10-11 02:21:29,446 INFO L262 CegarLoopResult]: For program point L146(lines 146 500) no Hoare annotation was computed. [2021-10-11 02:21:29,446 INFO L262 CegarLoopResult]: For program point L113(lines 113 511) no Hoare annotation was computed. [2021-10-11 02:21:29,446 INFO L258 CegarLoopResult]: At program point L180(lines 176 490) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4528))) (.cse2 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)))) [2021-10-11 02:21:29,446 INFO L262 CegarLoopResult]: For program point L445(lines 445 448) no Hoare annotation was computed. [2021-10-11 02:21:29,447 INFO L262 CegarLoopResult]: For program point L313(lines 313 315) no Hoare annotation was computed. [2021-10-11 02:21:29,447 INFO L262 CegarLoopResult]: For program point L280-1(lines 280 290) no Hoare annotation was computed. [2021-10-11 02:21:29,447 INFO L265 CegarLoopResult]: At program point L545(lines 12 547) the Hoare annotation is: true [2021-10-11 02:21:29,447 INFO L258 CegarLoopResult]: At program point L314(lines 76 546) the Hoare annotation is: false [2021-10-11 02:21:29,447 INFO L262 CegarLoopResult]: For program point L182(lines 182 488) no Hoare annotation was computed. [2021-10-11 02:21:29,447 INFO L262 CegarLoopResult]: For program point L149(lines 149 499) no Hoare annotation was computed. [2021-10-11 02:21:29,447 INFO L262 CegarLoopResult]: For program point L116(lines 116 510) no Hoare annotation was computed. [2021-10-11 02:21:29,448 INFO L262 CegarLoopResult]: For program point L216(lines 216 219) no Hoare annotation was computed. [2021-10-11 02:21:29,448 INFO L258 CegarLoopResult]: At program point L150(lines 146 500) the Hoare annotation is: (and (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433)) (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384)) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416)) (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2021-10-11 02:21:29,448 INFO L258 CegarLoopResult]: At program point L481(lines 98 534) the Hoare annotation is: (let ((.cse15 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (.cse16 (= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) (.cse14 (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0))) (let ((.cse10 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse11 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse6 (not .cse14)) (.cse12 (or (= 3 ULTIMATE.start_ssl3_connect_~s__state~0) .cse16)) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (.cse0 (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433))) (.cse17 (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse4 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512)) (.cse18 (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse3 (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse5 (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse19 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448))) (.cse7 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse20 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416))) (.cse13 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse15)) (.cse8 (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse10 .cse11 .cse9) (and .cse1 .cse12 .cse13) (and .cse10 .cse11 .cse1) (and .cse14 .cse15 .cse9) (and (not .cse9) .cse1 .cse16) (and .cse0 .cse2 .cse17 .cse4 .cse18 .cse1 .cse3 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) .cse5 .cse19 .cse6 .cse7 .cse20 .cse8) (and .cse12 .cse15 .cse9) (and .cse0 .cse2 .cse17 .cse4 .cse18 .cse1 .cse3 .cse5 .cse19 .cse7 .cse20 .cse13 .cse8)))) [2021-10-11 02:21:29,449 INFO L262 CegarLoopResult]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-10-11 02:21:29,449 INFO L262 CegarLoopResult]: For program point L250-2(lines 201 480) no Hoare annotation was computed. [2021-10-11 02:21:29,449 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:21:29,449 INFO L262 CegarLoopResult]: For program point L383-2(lines 201 480) no Hoare annotation was computed. [2021-10-11 02:21:29,449 INFO L262 CegarLoopResult]: For program point L284-2(lines 282 290) no Hoare annotation was computed. [2021-10-11 02:21:29,449 INFO L262 CegarLoopResult]: For program point L185(lines 185 487) no Hoare annotation was computed. [2021-10-11 02:21:29,450 INFO L262 CegarLoopResult]: For program point L152(lines 152 498) no Hoare annotation was computed. [2021-10-11 02:21:29,450 INFO L262 CegarLoopResult]: For program point L119(lines 119 509) no Hoare annotation was computed. [2021-10-11 02:21:29,450 INFO L262 CegarLoopResult]: For program point L516(lines 516 532) no Hoare annotation was computed. [2021-10-11 02:21:29,450 INFO L258 CegarLoopResult]: At program point L186(lines 182 488) the Hoare annotation is: (let ((.cse0 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)))) [2021-10-11 02:21:29,450 INFO L258 CegarLoopResult]: At program point L120(lines 116 510) the Hoare annotation is: (and (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433)) (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384)) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448)) (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416))) [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L517(lines 517 531) no Hoare annotation was computed. [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L352(lines 352 354) no Hoare annotation was computed. [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L518(lines 518 523) no Hoare annotation was computed. [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L518-2(lines 517 531) no Hoare annotation was computed. [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L188(lines 188 486) no Hoare annotation was computed. [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L155(lines 155 497) no Hoare annotation was computed. [2021-10-11 02:21:29,451 INFO L262 CegarLoopResult]: For program point L122(lines 122 508) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point L222(lines 222 233) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point L222-2(lines 201 480) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point L520(lines 520 522) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point L224(lines 224 227) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point L191(lines 191 485) no Hoare annotation was computed. [2021-10-11 02:21:29,452 INFO L262 CegarLoopResult]: For program point L158(lines 158 496) no Hoare annotation was computed. [2021-10-11 02:21:29,453 INFO L262 CegarLoopResult]: For program point L125(lines 125 507) no Hoare annotation was computed. [2021-10-11 02:21:29,453 INFO L258 CegarLoopResult]: At program point L192(lines 188 486) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4528))) (.cse1 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (not (= 4529 ULTIMATE.start_ssl3_connect_~s__state~0)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse3) (and (or (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) .cse3) .cse0 .cse1 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse2))) [2021-10-11 02:21:29,453 INFO L258 CegarLoopResult]: At program point L126(lines 122 508) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433)) (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448)) (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416)) (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0))) [2021-10-11 02:21:29,453 INFO L262 CegarLoopResult]: For program point L325-2(lines 201 480) no Hoare annotation was computed. [2021-10-11 02:21:29,453 INFO L262 CegarLoopResult]: For program point L392(lines 392 395) no Hoare annotation was computed. [2021-10-11 02:21:29,454 INFO L258 CegarLoopResult]: At program point L194(lines 194 484) the Hoare annotation is: (let ((.cse0 (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433))) (.cse3 (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse4 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse6 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416)))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) .cse4 .cse5) (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse1 .cse3 .cse2 .cse4 .cse5 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse6)) (and .cse0 .cse1 .cse3 .cse2 .cse4 .cse6 .cse5 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)))) [2021-10-11 02:21:29,454 INFO L262 CegarLoopResult]: For program point L161(lines 161 495) no Hoare annotation was computed. [2021-10-11 02:21:29,454 INFO L262 CegarLoopResult]: For program point L128(lines 128 506) no Hoare annotation was computed. [2021-10-11 02:21:29,454 INFO L262 CegarLoopResult]: For program point L228(lines 228 231) no Hoare annotation was computed. [2021-10-11 02:21:29,454 INFO L258 CegarLoopResult]: At program point L162(lines 152 498) the Hoare annotation is: (let ((.cse0 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480))) (or (and .cse0 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)))) [2021-10-11 02:21:29,454 INFO L262 CegarLoopResult]: For program point L427(lines 427 429) no Hoare annotation was computed. [2021-10-11 02:21:29,455 INFO L262 CegarLoopResult]: For program point L164(lines 164 494) no Hoare annotation was computed. [2021-10-11 02:21:29,455 INFO L262 CegarLoopResult]: For program point L131(lines 131 505) no Hoare annotation was computed. [2021-10-11 02:21:29,455 INFO L262 CegarLoopResult]: For program point L98-1(lines 76 546) no Hoare annotation was computed. [2021-10-11 02:21:29,455 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 544) no Hoare annotation was computed. [2021-10-11 02:21:29,455 INFO L262 CegarLoopResult]: For program point L297-2(lines 201 480) no Hoare annotation was computed. [2021-10-11 02:21:29,455 INFO L258 CegarLoopResult]: At program point L132(lines 128 506) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2021-10-11 02:21:29,456 INFO L262 CegarLoopResult]: For program point L265-2(lines 201 480) no Hoare annotation was computed. [2021-10-11 02:21:29,456 INFO L262 CegarLoopResult]: For program point L167(lines 167 493) no Hoare annotation was computed. [2021-10-11 02:21:29,456 INFO L262 CegarLoopResult]: For program point L134(lines 134 504) no Hoare annotation was computed. [2021-10-11 02:21:29,456 INFO L258 CegarLoopResult]: At program point L101(lines 101 515) the Hoare annotation is: (let ((.cse11 (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0))) (let ((.cse9 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse10 (<= 4464 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse5 (not .cse11)) (.cse8 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (.cse0 (not (= 4385 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4433))) (.cse13 (not (= 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse14 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512)) (.cse15 (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse3 (not (= 4417 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse4 (not (= 4449 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse16 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4448))) (.cse6 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse17 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4416))) (.cse12 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (.cse7 (not (= 4369 ULTIMATE.start_ssl3_connect_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= 4529 ULTIMATE.start_ssl3_connect_~s__state~0)) .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse10 .cse8) (and .cse9 .cse10 .cse1) (and .cse1 (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse11 .cse12 .cse8) (and .cse0 .cse2 .cse13 .cse14 .cse15 .cse1 .cse3 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) .cse4 .cse16 .cse5 .cse6 .cse17 .cse7) (and (or (= 3 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) .cse12 .cse8) (and .cse0 .cse2 .cse13 .cse14 .cse15 .cse1 .cse3 .cse4 .cse16 .cse6 .cse17 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse12) .cse7)))) [2021-10-11 02:21:29,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:29 BoogieIcfgContainer [2021-10-11 02:21:29,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:29,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:29,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:29,490 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:29,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:48" (3/4) ... [2021-10-11 02:21:29,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:29,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2021-10-11 02:21:29,513 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:21:29,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:21:29,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:29,613 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5266f8-6b61-4bb2-9952-b857f19f09ea/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:29,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:29,615 INFO L168 Benchmark]: Toolchain (without parser) took 43314.58 ms. Allocated memory was 125.8 MB in the beginning and 7.6 GB in the end (delta: 7.5 GB). Free memory was 97.7 MB in the beginning and 2.8 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.8 GB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,615 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory was 80.7 MB in the beginning and 80.7 MB in the end (delta: 61.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:29,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.87 ms. Allocated memory is still 125.8 MB. Free memory was 97.5 MB in the beginning and 95.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.53 ms. Allocated memory is still 125.8 MB. Free memory was 95.7 MB in the beginning and 93.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,616 INFO L168 Benchmark]: Boogie Preprocessor took 82.07 ms. Allocated memory is still 125.8 MB. Free memory was 93.0 MB in the beginning and 91.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,617 INFO L168 Benchmark]: RCFGBuilder took 1338.95 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 91.1 MB in the beginning and 112.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,617 INFO L168 Benchmark]: TraceAbstraction took 41293.95 ms. Allocated memory was 151.0 MB in the beginning and 7.6 GB in the end (delta: 7.5 GB). Free memory was 112.7 MB in the beginning and 2.8 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,618 INFO L168 Benchmark]: Witness Printer took 124.21 ms. Allocated memory is still 7.6 GB. Free memory was 2.8 GB in the beginning and 2.8 GB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory was 80.7 MB in the beginning and 80.7 MB in the end (delta: 61.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.87 ms. Allocated memory is still 125.8 MB. Free memory was 97.5 MB in the beginning and 95.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.53 ms. Allocated memory is still 125.8 MB. Free memory was 95.7 MB in the beginning and 93.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.07 ms. Allocated memory is still 125.8 MB. Free memory was 93.0 MB in the beginning and 91.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1338.95 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 91.1 MB in the beginning and 112.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 41293.95 ms. Allocated memory was 151.0 MB in the beginning and 7.6 GB in the end (delta: 7.5 GB). Free memory was 112.7 MB in the beginning and 2.8 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.1 GB. * Witness Printer took 124.21 ms. Allocated memory is still 7.6 GB. Free memory was 2.8 GB in the beginning and 2.8 GB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 544]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (4464 <= s__state && blastFlag <= 4) || (4464 <= s__state && s__hit == 0) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((((((((!(4385 == s__state) && blastFlag <= 4) && !(s__state == 4433)) && !(4417 == s__state)) && !(4529 == s__state)) && !(4449 == s__state)) && !(4352 == s__state)) && !(4401 == s__state)) && !(4369 == s__state)) && s__hit == 0) || ((s__state <= 4528 && 4464 <= s__state) && s__hit == 0)) || ((s__state <= 4528 && 4464 <= s__state) && blastFlag <= 4)) || (blastFlag <= 4 && 4560 <= s__state)) || ((4352 == s__state && s__s3__tmp__next_state___0 == 4560) && s__hit == 0)) || (((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4512) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && 4352 <= s__state) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(4401 == s__state)) && !(s__state == 4416)) && !(4369 == s__state))) || (((3 == s__state || s__state == 4560) && s__s3__tmp__next_state___0 == 4560) && s__hit == 0)) || ((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4512) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && !(4449 == s__state)) && !(s__state == 4448)) && !(4401 == s__state)) && !(s__state == 4416)) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) && !(4369 == s__state)) - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: (((((((((((((!(4385 == s__state) && s__state <= 4480) && !(s__state == 4384)) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && 4352 <= s__state) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(s__state == 4368)) && !(4401 == s__state)) && !(s__state == 4416)) && !(4369 == s__state)) && s__hit == 0 - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: ((((((((((((((((!(4385 == s__state) && blastFlag <= 4) && !(s__state == 4433)) && !(4417 == s__state)) && s__state <= 4512) && !(4449 == s__state)) && !(4352 == s__state)) && !(4401 == s__state)) && !(4369 == s__state)) && s__hit == 0) || ((s__state <= 4528 && 4464 <= s__state) && s__hit == 0)) || ((blastFlag <= 4 && (3 == s__state || s__state == 4560)) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560))) || ((s__state <= 4528 && 4464 <= s__state) && blastFlag <= 4)) || ((4352 == s__state && s__s3__tmp__next_state___0 == 4560) && s__hit == 0)) || ((!(s__hit == 0) && blastFlag <= 4) && s__state == 4560)) || (((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4512) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && 4352 <= s__state) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(4401 == s__state)) && !(s__state == 4416)) && !(4369 == s__state))) || (((3 == s__state || s__state == 4560) && s__s3__tmp__next_state___0 == 4560) && s__hit == 0)) || ((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4512) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && !(4449 == s__state)) && !(s__state == 4448)) && !(4401 == s__state)) && !(s__state == 4416)) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) && !(4369 == s__state)) - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((4464 <= s__state && s__state <= 4512) && s__hit == 0) || ((4464 <= s__state && blastFlag <= 4) && s__state <= 4512) - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4433) && !(4432 == s__state)) && s__state <= 4480) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && 4352 <= s__state) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(4401 == s__state)) && !(s__state == 4368)) && !(s__state == 4416)) && !(4369 == s__state) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((s__state <= 4528 && !(s__state == 4528)) && 4464 <= s__state) && blastFlag <= 4) || (((s__state <= 4528 && !(s__state == 4528)) && 4464 <= s__state) && s__hit == 0) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4480) && !(s__state == 4384)) && !(4400 == s__state)) && blastFlag <= 4) && 4352 <= s__state) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(s__state == 4368)) && !(4401 == s__state)) && !(4369 == s__state)) && s__hit == 0 - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: ((((!(s__state == 4528) && 4464 <= s__state) && !(4529 == s__state)) && s__s3__tmp__next_state___0 == 4560) && s__hit == 0) || (((((4560 <= s__state || s__hit == 0) && !(s__state == 4528)) && 4464 <= s__state) && blastFlag <= 4) && !(4529 == s__state)) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4480) && !(s__state == 4384)) && !(4400 == s__state)) && !(4417 == s__state)) && 4352 <= s__state) && !(4352 == s__state)) && !(s__state == 4368)) && !(4401 == s__state)) && !(s__state == 4416)) && !(4369 == s__state)) && s__hit == 0 - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: ((4464 <= s__state && blastFlag <= 4) && s__state <= 4480) || ((4464 <= s__state && s__state <= 4480) && s__hit == 0) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: (((((((!(4400 == s__state) && !(s__state == 4433)) && !(4417 == s__state)) && !(4432 == s__state)) && !(4352 == s__state)) && !(4401 == s__state)) && !(s__state == 4416)) || (((((((!(4400 == s__state) && blastFlag <= 4) && !(s__state == 4433)) && !(4432 == s__state)) && !(4417 == s__state)) && !(4401 == s__state)) && !(s__state == 4416)) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560))) || (((((((!(4400 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && !(4417 == s__state)) && !(4401 == s__state)) && s__s3__tmp__next_state___0 == 4560) && !(s__state == 4416)) && s__hit == 0) - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: ((((((((((((!(4385 == s__state) && !(s__state == 4433)) && !(4432 == s__state)) && s__state <= 4480) && !(s__state == 4384)) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && 4352 <= s__state) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(4401 == s__state)) && !(s__state == 4416) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((((((((((((!(4385 == s__state) && !(s__state == 4528)) && !(s__state == 4433)) && !(4432 == s__state)) && !(s__state == 4384)) && !(4400 == s__state)) && blastFlag <= 4) && !(4417 == s__state)) && !(4529 == s__state)) && !(4449 == s__state)) && !(s__state == 4448)) && !(4352 == s__state)) && !(s__state == 4368)) && !(4401 == s__state)) && !(s__state == 4416)) && !(4369 == s__state) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((4464 <= s__state && s__state <= 4512) && s__hit == 0) || ((4464 <= s__state && blastFlag <= 4) && s__state <= 4512) - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (blastFlag <= 4 && 4400 == s__state) && s__hit == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.6s, OverallIterations: 22, TraceHistogramMax: 16, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1645 SDtfs, 2847 SDslu, 1126 SDs, 0 SdLazy, 3726 SolverSat, 916 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1349 GetRequests, 1288 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=827occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 1181 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 19 PreInvPairs, 144 NumberOfFragments, 1016 HoareAnnotationTreeSize, 19 FomulaSimplifications, 43975 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 19 FomulaSimplificationsInter, 4713 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 3238 NumberOfCodeBlocks, 3238 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3838 ConstructedInterpolants, 0 QuantifiedInterpolants, 1499329 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1327 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 28 InterpolantComputations, 20 PerfectInterpolantSequences, 11102/11788 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 proved your program to be correct! Received shutdown request...