./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.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-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan --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 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:42:21,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:42:21,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:42:21,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:42:21,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:42:21,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:42:21,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:42:21,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:42:21,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:42:21,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:42:21,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:42:21,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:42:21,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:42:22,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:42:22,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:42:22,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:42:22,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:42:22,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:42:22,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:42:22,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:42:22,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:42:22,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:42:22,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:42:22,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:42:22,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:42:22,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:42:22,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:42:22,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:42:22,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:42:22,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:42:22,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:42:22,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:42:22,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:42:22,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:42:22,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:42:22,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:42:22,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:42:22,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:42:22,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:42:22,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:42:22,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:42:22,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:42:22,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:42:22,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:42:22,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:42:22,055 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:42:22,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:42:22,055 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:42:22,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:42:22,056 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:42:22,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:42:22,056 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:42:22,056 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:42:22,057 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:42:22,057 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:42:22,057 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:42:22,057 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:42:22,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:42:22,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:42:22,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:42:22,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:42:22,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:42:22,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:42:22,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:42:22,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:42:22,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:42:22,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:42:22,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:42:22,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:42:22,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:42:22,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:42:22,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:42:22,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:42:22,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:42:22,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:42:22,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:42:22,061 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:42:22,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:42:22,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:42:22,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:42:22,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:42:22,062 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-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b [2020-12-09 10:42:22,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:42:22,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:42:22,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:42:22,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:42:22,272 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:42:22,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-12-09 10:42:22,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/data/5375fcbc3/db873cb3770a4f83997feafcb70dafb4/FLAG9e4d736be [2020-12-09 10:42:22,699 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:42:22,699 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-12-09 10:42:22,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/data/5375fcbc3/db873cb3770a4f83997feafcb70dafb4/FLAG9e4d736be [2020-12-09 10:42:22,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/data/5375fcbc3/db873cb3770a4f83997feafcb70dafb4 [2020-12-09 10:42:22,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:42:22,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:42:22,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:42:22,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:42:22,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:42:22,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:22,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcf025b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22, skipping insertion in model container [2020-12-09 10:42:22,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:22,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:42:22,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:42:22,912 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[44554,44567] [2020-12-09 10:42:22,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:42:22,924 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:42:22,964 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[44554,44567] [2020-12-09 10:42:22,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:42:22,976 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:42:22,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22 WrapperNode [2020-12-09 10:42:22,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:42:22,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:42:22,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:42:22,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:42:22,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:22,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:42:23,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:42:23,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:42:23,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:42:23,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... [2020-12-09 10:42:23,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:42:23,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:42:23,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:42:23,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:42:23,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/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 [2020-12-09 10:42:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:42:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:42:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:42:23,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:42:23,191 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 10:42:23,549 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-09 10:42:23,549 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-09 10:42:23,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:42:23,773 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 10:42:23,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:42:23 BoogieIcfgContainer [2020-12-09 10:42:23,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:42:23,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:42:23,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:42:23,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:42:23,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:42:22" (1/3) ... [2020-12-09 10:42:23,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a52be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:42:23, skipping insertion in model container [2020-12-09 10:42:23,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:42:22" (2/3) ... [2020-12-09 10:42:23,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a52be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:42:23, skipping insertion in model container [2020-12-09 10:42:23,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:42:23" (3/3) ... [2020-12-09 10:42:23,781 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-12-09 10:42:23,790 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:42:23,793 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:42:23,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:42:23,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:42:23,817 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:42:23,817 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:42:23,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:42:23,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:42:23,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:42:23,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:42:23,818 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:42:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-12-09 10:42:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 10:42:23,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:23,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:23,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:23,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1413221121, now seen corresponding path program 1 times [2020-12-09 10:42:23,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:23,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124465247] [2020-12-09 10:42:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:23,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124465247] [2020-12-09 10:42:23,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:23,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:23,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329382559] [2020-12-09 10:42:23,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:23,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:23,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:23,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:23,988 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2020-12-09 10:42:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,117 INFO L93 Difference]: Finished difference Result 247 states and 429 transitions. [2020-12-09 10:42:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 10:42:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,126 INFO L225 Difference]: With dead ends: 247 [2020-12-09 10:42:24,126 INFO L226 Difference]: Without dead ends: 129 [2020-12-09 10:42:24,128 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 [2020-12-09 10:42:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-09 10:42:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-12-09 10:42:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 10:42:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2020-12-09 10:42:24,161 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 19 [2020-12-09 10:42:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,161 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2020-12-09 10:42:24,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2020-12-09 10:42:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:42:24,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,163 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, 1] [2020-12-09 10:42:24,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:42:24,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash 651610638, now seen corresponding path program 1 times [2020-12-09 10:42:24,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:24,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847480505] [2020-12-09 10:42:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:24,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847480505] [2020-12-09 10:42:24,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:24,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:24,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750264657] [2020-12-09 10:42:24,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:24,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:24,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:24,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:24,208 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand 3 states. [2020-12-09 10:42:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,310 INFO L93 Difference]: Finished difference Result 265 states and 397 transitions. [2020-12-09 10:42:24,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-09 10:42:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,313 INFO L225 Difference]: With dead ends: 265 [2020-12-09 10:42:24,313 INFO L226 Difference]: Without dead ends: 138 [2020-12-09 10:42:24,314 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 [2020-12-09 10:42:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-09 10:42:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-12-09 10:42:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 10:42:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 195 transitions. [2020-12-09 10:42:24,326 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 195 transitions. Word has length 21 [2020-12-09 10:42:24,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,327 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 195 transitions. [2020-12-09 10:42:24,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 195 transitions. [2020-12-09 10:42:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:42:24,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,327 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, 1] [2020-12-09 10:42:24,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:42:24,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:24,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2002460673, now seen corresponding path program 1 times [2020-12-09 10:42:24,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:24,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219423294] [2020-12-09 10:42:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:24,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219423294] [2020-12-09 10:42:24,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:24,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:24,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250273802] [2020-12-09 10:42:24,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:24,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:24,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:24,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:24,388 INFO L87 Difference]: Start difference. First operand 130 states and 195 transitions. Second operand 3 states. [2020-12-09 10:42:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,487 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-12-09 10:42:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-09 10:42:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,488 INFO L225 Difference]: With dead ends: 276 [2020-12-09 10:42:24,489 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 10:42:24,489 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 [2020-12-09 10:42:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 10:42:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-12-09 10:42:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-09 10:42:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2020-12-09 10:42:24,498 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 21 [2020-12-09 10:42:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,498 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2020-12-09 10:42:24,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2020-12-09 10:42:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 10:42:24,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,499 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, 1] [2020-12-09 10:42:24,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:42:24,499 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:24,500 INFO L82 PathProgramCache]: Analyzing trace with hash 308589360, now seen corresponding path program 1 times [2020-12-09 10:42:24,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:24,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496557089] [2020-12-09 10:42:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:24,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496557089] [2020-12-09 10:42:24,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:24,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:24,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982498342] [2020-12-09 10:42:24,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:24,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:24,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:24,531 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand 3 states. [2020-12-09 10:42:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,626 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2020-12-09 10:42:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-09 10:42:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,627 INFO L225 Difference]: With dead ends: 296 [2020-12-09 10:42:24,627 INFO L226 Difference]: Without dead ends: 152 [2020-12-09 10:42:24,628 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 [2020-12-09 10:42:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-09 10:42:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-12-09 10:42:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 10:42:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-12-09 10:42:24,638 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 21 [2020-12-09 10:42:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,638 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-12-09 10:42:24,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-12-09 10:42:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 10:42:24,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,639 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, 1, 1] [2020-12-09 10:42:24,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:42:24,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash -617188369, now seen corresponding path program 1 times [2020-12-09 10:42:24,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:24,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842698496] [2020-12-09 10:42:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842698496] [2020-12-09 10:42:24,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:24,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:24,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381962440] [2020-12-09 10:42:24,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:24,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:24,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:24,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:24,674 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 3 states. [2020-12-09 10:42:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,767 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2020-12-09 10:42:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-09 10:42:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,769 INFO L225 Difference]: With dead ends: 310 [2020-12-09 10:42:24,769 INFO L226 Difference]: Without dead ends: 160 [2020-12-09 10:42:24,769 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 [2020-12-09 10:42:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-09 10:42:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-12-09 10:42:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 10:42:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 228 transitions. [2020-12-09 10:42:24,779 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 228 transitions. Word has length 22 [2020-12-09 10:42:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,779 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 228 transitions. [2020-12-09 10:42:24,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 228 transitions. [2020-12-09 10:42:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 10:42:24,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,780 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, 1, 1] [2020-12-09 10:42:24,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:42:24,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1723941666, now seen corresponding path program 1 times [2020-12-09 10:42:24,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:24,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875321859] [2020-12-09 10:42:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875321859] [2020-12-09 10:42:24,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:24,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:24,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162098988] [2020-12-09 10:42:24,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:24,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:24,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:24,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:24,812 INFO L87 Difference]: Start difference. First operand 152 states and 228 transitions. Second operand 3 states. [2020-12-09 10:42:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,884 INFO L93 Difference]: Finished difference Result 304 states and 456 transitions. [2020-12-09 10:42:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-09 10:42:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,885 INFO L225 Difference]: With dead ends: 304 [2020-12-09 10:42:24,886 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 10:42:24,886 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 [2020-12-09 10:42:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 10:42:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-12-09 10:42:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 10:42:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 227 transitions. [2020-12-09 10:42:24,892 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 227 transitions. Word has length 22 [2020-12-09 10:42:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,892 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 227 transitions. [2020-12-09 10:42:24,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 227 transitions. [2020-12-09 10:42:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 10:42:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,893 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, 1, 1, 1] [2020-12-09 10:42:24,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:42:24,893 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:24,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1176329267, now seen corresponding path program 1 times [2020-12-09 10:42:24,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:24,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533247224] [2020-12-09 10:42:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:24,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533247224] [2020-12-09 10:42:24,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:24,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:24,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233201866] [2020-12-09 10:42:24,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:24,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:24,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:24,915 INFO L87 Difference]: Start difference. First operand 152 states and 227 transitions. Second operand 3 states. [2020-12-09 10:42:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:24,991 INFO L93 Difference]: Finished difference Result 310 states and 461 transitions. [2020-12-09 10:42:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:24,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-09 10:42:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:24,993 INFO L225 Difference]: With dead ends: 310 [2020-12-09 10:42:24,993 INFO L226 Difference]: Without dead ends: 160 [2020-12-09 10:42:24,993 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 [2020-12-09 10:42:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-09 10:42:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-12-09 10:42:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 10:42:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2020-12-09 10:42:24,998 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 23 [2020-12-09 10:42:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:24,998 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2020-12-09 10:42:24,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2020-12-09 10:42:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 10:42:24,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:24,999 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, 1, 1, 1, 1] [2020-12-09 10:42:24,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:42:25,000 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:25,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:25,000 INFO L82 PathProgramCache]: Analyzing trace with hash -882584972, now seen corresponding path program 1 times [2020-12-09 10:42:25,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:25,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205265372] [2020-12-09 10:42:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:25,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205265372] [2020-12-09 10:42:25,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:25,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:25,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365358111] [2020-12-09 10:42:25,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:25,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:25,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:25,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:25,020 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand 3 states. [2020-12-09 10:42:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:25,104 INFO L93 Difference]: Finished difference Result 310 states and 457 transitions. [2020-12-09 10:42:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:25,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-09 10:42:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:25,105 INFO L225 Difference]: With dead ends: 310 [2020-12-09 10:42:25,105 INFO L226 Difference]: Without dead ends: 160 [2020-12-09 10:42:25,105 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 [2020-12-09 10:42:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-09 10:42:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-12-09 10:42:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 10:42:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 223 transitions. [2020-12-09 10:42:25,111 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 223 transitions. Word has length 24 [2020-12-09 10:42:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:25,111 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 223 transitions. [2020-12-09 10:42:25,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 223 transitions. [2020-12-09 10:42:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 10:42:25,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:25,112 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, 1, 1, 1, 1] [2020-12-09 10:42:25,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 10:42:25,112 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:25,112 INFO L82 PathProgramCache]: Analyzing trace with hash 505722867, now seen corresponding path program 1 times [2020-12-09 10:42:25,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:25,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639377694] [2020-12-09 10:42:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:25,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639377694] [2020-12-09 10:42:25,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:25,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:42:25,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930192348] [2020-12-09 10:42:25,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:42:25,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:42:25,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:42:25,141 INFO L87 Difference]: Start difference. First operand 152 states and 223 transitions. Second operand 4 states. [2020-12-09 10:42:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:25,305 INFO L93 Difference]: Finished difference Result 441 states and 647 transitions. [2020-12-09 10:42:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:42:25,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-09 10:42:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:25,307 INFO L225 Difference]: With dead ends: 441 [2020-12-09 10:42:25,307 INFO L226 Difference]: Without dead ends: 291 [2020-12-09 10:42:25,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:42:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-12-09 10:42:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 259. [2020-12-09 10:42:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-12-09 10:42:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 381 transitions. [2020-12-09 10:42:25,318 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 381 transitions. Word has length 24 [2020-12-09 10:42:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:25,318 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 381 transitions. [2020-12-09 10:42:25,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:42:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 381 transitions. [2020-12-09 10:42:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 10:42:25,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:25,319 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:25,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 10:42:25,319 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1845369516, now seen corresponding path program 1 times [2020-12-09 10:42:25,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:25,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509033238] [2020-12-09 10:42:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:25,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509033238] [2020-12-09 10:42:25,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:25,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:25,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522511125] [2020-12-09 10:42:25,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:25,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:25,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:25,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:25,342 INFO L87 Difference]: Start difference. First operand 259 states and 381 transitions. Second operand 3 states. [2020-12-09 10:42:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:25,451 INFO L93 Difference]: Finished difference Result 591 states and 881 transitions. [2020-12-09 10:42:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:25,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-09 10:42:25,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:25,453 INFO L225 Difference]: With dead ends: 591 [2020-12-09 10:42:25,453 INFO L226 Difference]: Without dead ends: 334 [2020-12-09 10:42:25,453 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 [2020-12-09 10:42:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-12-09 10:42:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2020-12-09 10:42:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-12-09 10:42:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 466 transitions. [2020-12-09 10:42:25,469 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 466 transitions. Word has length 28 [2020-12-09 10:42:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:25,469 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 466 transitions. [2020-12-09 10:42:25,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 466 transitions. [2020-12-09 10:42:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 10:42:25,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:25,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:25,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 10:42:25,470 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:25,471 INFO L82 PathProgramCache]: Analyzing trace with hash 396459179, now seen corresponding path program 1 times [2020-12-09 10:42:25,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:25,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191434373] [2020-12-09 10:42:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:25,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191434373] [2020-12-09 10:42:25,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:25,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:25,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653915961] [2020-12-09 10:42:25,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:25,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:25,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:25,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:25,492 INFO L87 Difference]: Start difference. First operand 314 states and 466 transitions. Second operand 3 states. [2020-12-09 10:42:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:25,609 INFO L93 Difference]: Finished difference Result 648 states and 967 transitions. [2020-12-09 10:42:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:25,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-09 10:42:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:25,611 INFO L225 Difference]: With dead ends: 648 [2020-12-09 10:42:25,611 INFO L226 Difference]: Without dead ends: 336 [2020-12-09 10:42:25,612 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 [2020-12-09 10:42:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-12-09 10:42:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 325. [2020-12-09 10:42:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-09 10:42:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 485 transitions. [2020-12-09 10:42:25,629 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 485 transitions. Word has length 29 [2020-12-09 10:42:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:25,629 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 485 transitions. [2020-12-09 10:42:25,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:25,629 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 485 transitions. [2020-12-09 10:42:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 10:42:25,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:25,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:25,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 10:42:25,631 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1785662215, now seen corresponding path program 1 times [2020-12-09 10:42:25,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:25,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324645474] [2020-12-09 10:42:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:25,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324645474] [2020-12-09 10:42:25,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:25,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:25,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845934553] [2020-12-09 10:42:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:25,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:25,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:25,662 INFO L87 Difference]: Start difference. First operand 325 states and 485 transitions. Second operand 3 states. [2020-12-09 10:42:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:25,808 INFO L93 Difference]: Finished difference Result 709 states and 1064 transitions. [2020-12-09 10:42:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:25,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-09 10:42:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:25,811 INFO L225 Difference]: With dead ends: 709 [2020-12-09 10:42:25,812 INFO L226 Difference]: Without dead ends: 386 [2020-12-09 10:42:25,812 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 [2020-12-09 10:42:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-12-09 10:42:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 378. [2020-12-09 10:42:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-12-09 10:42:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 570 transitions. [2020-12-09 10:42:25,834 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 570 transitions. Word has length 35 [2020-12-09 10:42:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:25,834 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 570 transitions. [2020-12-09 10:42:25,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 570 transitions. [2020-12-09 10:42:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 10:42:25,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:25,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:25,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 10:42:25,836 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash -486054621, now seen corresponding path program 1 times [2020-12-09 10:42:25,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:25,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589748611] [2020-12-09 10:42:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:25,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589748611] [2020-12-09 10:42:25,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:25,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:25,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525391817] [2020-12-09 10:42:25,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:25,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:25,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:25,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:25,867 INFO L87 Difference]: Start difference. First operand 378 states and 570 transitions. Second operand 3 states. [2020-12-09 10:42:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:25,991 INFO L93 Difference]: Finished difference Result 760 states and 1145 transitions. [2020-12-09 10:42:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:25,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-09 10:42:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:25,993 INFO L225 Difference]: With dead ends: 760 [2020-12-09 10:42:25,993 INFO L226 Difference]: Without dead ends: 384 [2020-12-09 10:42:25,994 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 [2020-12-09 10:42:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-12-09 10:42:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2020-12-09 10:42:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-12-09 10:42:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2020-12-09 10:42:26,006 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 36 [2020-12-09 10:42:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,007 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2020-12-09 10:42:26,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2020-12-09 10:42:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-09 10:42:26,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,008 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 10:42:26,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 10:42:26,008 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,008 INFO L82 PathProgramCache]: Analyzing trace with hash 501846159, now seen corresponding path program 1 times [2020-12-09 10:42:26,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511254462] [2020-12-09 10:42:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:26,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511254462] [2020-12-09 10:42:26,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:26,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:26,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888049296] [2020-12-09 10:42:26,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:26,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:26,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:26,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:26,032 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand 3 states. [2020-12-09 10:42:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:26,152 INFO L93 Difference]: Finished difference Result 752 states and 1132 transitions. [2020-12-09 10:42:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:26,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-09 10:42:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:26,154 INFO L225 Difference]: With dead ends: 752 [2020-12-09 10:42:26,154 INFO L226 Difference]: Without dead ends: 375 [2020-12-09 10:42:26,155 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 [2020-12-09 10:42:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-12-09 10:42:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2020-12-09 10:42:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-12-09 10:42:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 544 transitions. [2020-12-09 10:42:26,166 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 544 transitions. Word has length 54 [2020-12-09 10:42:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,166 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 544 transitions. [2020-12-09 10:42:26,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 544 transitions. [2020-12-09 10:42:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-09 10:42:26,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:26,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 10:42:26,168 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash -943857641, now seen corresponding path program 1 times [2020-12-09 10:42:26,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427204872] [2020-12-09 10:42:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 10:42:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427204872] [2020-12-09 10:42:26,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:26,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:26,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846587450] [2020-12-09 10:42:26,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:26,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:26,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:26,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:26,198 INFO L87 Difference]: Start difference. First operand 365 states and 544 transitions. Second operand 3 states. [2020-12-09 10:42:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:26,297 INFO L93 Difference]: Finished difference Result 764 states and 1136 transitions. [2020-12-09 10:42:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:26,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-09 10:42:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:26,300 INFO L225 Difference]: With dead ends: 764 [2020-12-09 10:42:26,300 INFO L226 Difference]: Without dead ends: 401 [2020-12-09 10:42:26,301 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 [2020-12-09 10:42:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-12-09 10:42:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2020-12-09 10:42:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-12-09 10:42:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 580 transitions. [2020-12-09 10:42:26,318 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 580 transitions. Word has length 55 [2020-12-09 10:42:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,318 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 580 transitions. [2020-12-09 10:42:26,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 580 transitions. [2020-12-09 10:42:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-09 10:42:26,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:26,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 10:42:26,320 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1277153928, now seen corresponding path program 1 times [2020-12-09 10:42:26,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426031864] [2020-12-09 10:42:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 10:42:26,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426031864] [2020-12-09 10:42:26,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:26,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:26,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119269168] [2020-12-09 10:42:26,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:26,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:26,355 INFO L87 Difference]: Start difference. First operand 393 states and 580 transitions. Second operand 3 states. [2020-12-09 10:42:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:26,453 INFO L93 Difference]: Finished difference Result 788 states and 1163 transitions. [2020-12-09 10:42:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:26,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-09 10:42:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:26,455 INFO L225 Difference]: With dead ends: 788 [2020-12-09 10:42:26,455 INFO L226 Difference]: Without dead ends: 397 [2020-12-09 10:42:26,455 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 [2020-12-09 10:42:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-12-09 10:42:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 393. [2020-12-09 10:42:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-12-09 10:42:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 576 transitions. [2020-12-09 10:42:26,468 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 576 transitions. Word has length 56 [2020-12-09 10:42:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,468 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 576 transitions. [2020-12-09 10:42:26,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 576 transitions. [2020-12-09 10:42:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-09 10:42:26,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,469 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 10:42:26,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 10:42:26,469 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,469 INFO L82 PathProgramCache]: Analyzing trace with hash -589018603, now seen corresponding path program 1 times [2020-12-09 10:42:26,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933582087] [2020-12-09 10:42:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:26,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933582087] [2020-12-09 10:42:26,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:26,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:26,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905966882] [2020-12-09 10:42:26,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:26,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:26,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:26,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:26,489 INFO L87 Difference]: Start difference. First operand 393 states and 576 transitions. Second operand 3 states. [2020-12-09 10:42:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:26,596 INFO L93 Difference]: Finished difference Result 820 states and 1200 transitions. [2020-12-09 10:42:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:26,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-09 10:42:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:26,599 INFO L225 Difference]: With dead ends: 820 [2020-12-09 10:42:26,599 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 10:42:26,599 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 [2020-12-09 10:42:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 10:42:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-12-09 10:42:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 10:42:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2020-12-09 10:42:26,621 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 56 [2020-12-09 10:42:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,621 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2020-12-09 10:42:26,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2020-12-09 10:42:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-09 10:42:26,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,623 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 10:42:26,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 10:42:26,623 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2065178124, now seen corresponding path program 1 times [2020-12-09 10:42:26,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488661293] [2020-12-09 10:42:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:26,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488661293] [2020-12-09 10:42:26,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:26,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:26,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499360841] [2020-12-09 10:42:26,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:26,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:26,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:26,653 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand 3 states. [2020-12-09 10:42:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:26,770 INFO L93 Difference]: Finished difference Result 901 states and 1307 transitions. [2020-12-09 10:42:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:26,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-09 10:42:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:26,773 INFO L225 Difference]: With dead ends: 901 [2020-12-09 10:42:26,773 INFO L226 Difference]: Without dead ends: 474 [2020-12-09 10:42:26,774 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 [2020-12-09 10:42:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-12-09 10:42:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2020-12-09 10:42:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-12-09 10:42:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 679 transitions. [2020-12-09 10:42:26,788 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 679 transitions. Word has length 68 [2020-12-09 10:42:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,788 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 679 transitions. [2020-12-09 10:42:26,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 679 transitions. [2020-12-09 10:42:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-09 10:42:26,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,789 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:26,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 10:42:26,790 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash 117982928, now seen corresponding path program 1 times [2020-12-09 10:42:26,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152114491] [2020-12-09 10:42:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:42:26,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152114491] [2020-12-09 10:42:26,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:26,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:26,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401456515] [2020-12-09 10:42:26,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:26,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:26,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:26,812 INFO L87 Difference]: Start difference. First operand 470 states and 679 transitions. Second operand 3 states. [2020-12-09 10:42:26,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:26,953 INFO L93 Difference]: Finished difference Result 940 states and 1358 transitions. [2020-12-09 10:42:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:26,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-09 10:42:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:26,956 INFO L225 Difference]: With dead ends: 940 [2020-12-09 10:42:26,957 INFO L226 Difference]: Without dead ends: 472 [2020-12-09 10:42:26,958 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 [2020-12-09 10:42:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-12-09 10:42:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2020-12-09 10:42:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-12-09 10:42:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 676 transitions. [2020-12-09 10:42:26,982 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 676 transitions. Word has length 69 [2020-12-09 10:42:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:26,982 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 676 transitions. [2020-12-09 10:42:26,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 676 transitions. [2020-12-09 10:42:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-09 10:42:26,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:26,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:26,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-09 10:42:26,984 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:26,985 INFO L82 PathProgramCache]: Analyzing trace with hash 69292448, now seen corresponding path program 1 times [2020-12-09 10:42:26,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:26,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221969701] [2020-12-09 10:42:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 10:42:27,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221969701] [2020-12-09 10:42:27,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:27,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:27,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573915768] [2020-12-09 10:42:27,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:27,012 INFO L87 Difference]: Start difference. First operand 470 states and 676 transitions. Second operand 3 states. [2020-12-09 10:42:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:27,116 INFO L93 Difference]: Finished difference Result 968 states and 1390 transitions. [2020-12-09 10:42:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:27,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-09 10:42:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:27,120 INFO L225 Difference]: With dead ends: 968 [2020-12-09 10:42:27,120 INFO L226 Difference]: Without dead ends: 500 [2020-12-09 10:42:27,121 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 [2020-12-09 10:42:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-09 10:42:27,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2020-12-09 10:42:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-12-09 10:42:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 705 transitions. [2020-12-09 10:42:27,138 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 705 transitions. Word has length 73 [2020-12-09 10:42:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:27,138 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 705 transitions. [2020-12-09 10:42:27,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 705 transitions. [2020-12-09 10:42:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-09 10:42:27,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:27,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:27,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-09 10:42:27,139 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:27,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1674328031, now seen corresponding path program 1 times [2020-12-09 10:42:27,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:27,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636864651] [2020-12-09 10:42:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 10:42:27,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636864651] [2020-12-09 10:42:27,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:27,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:27,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167143432] [2020-12-09 10:42:27,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:27,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:27,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:27,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:27,161 INFO L87 Difference]: Start difference. First operand 496 states and 705 transitions. Second operand 3 states. [2020-12-09 10:42:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:27,266 INFO L93 Difference]: Finished difference Result 992 states and 1410 transitions. [2020-12-09 10:42:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:27,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-09 10:42:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:27,268 INFO L225 Difference]: With dead ends: 992 [2020-12-09 10:42:27,268 INFO L226 Difference]: Without dead ends: 498 [2020-12-09 10:42:27,269 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 [2020-12-09 10:42:27,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-12-09 10:42:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2020-12-09 10:42:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-12-09 10:42:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 698 transitions. [2020-12-09 10:42:27,284 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 698 transitions. Word has length 74 [2020-12-09 10:42:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:27,284 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 698 transitions. [2020-12-09 10:42:27,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 698 transitions. [2020-12-09 10:42:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-09 10:42:27,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:27,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:27,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 10:42:27,286 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:27,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2146679968, now seen corresponding path program 1 times [2020-12-09 10:42:27,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:27,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61656599] [2020-12-09 10:42:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 10:42:27,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61656599] [2020-12-09 10:42:27,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:27,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:27,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349101252] [2020-12-09 10:42:27,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:27,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:27,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:27,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:27,307 INFO L87 Difference]: Start difference. First operand 496 states and 698 transitions. Second operand 3 states. [2020-12-09 10:42:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:27,423 INFO L93 Difference]: Finished difference Result 1028 states and 1442 transitions. [2020-12-09 10:42:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:27,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-09 10:42:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:27,427 INFO L225 Difference]: With dead ends: 1028 [2020-12-09 10:42:27,427 INFO L226 Difference]: Without dead ends: 534 [2020-12-09 10:42:27,428 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 [2020-12-09 10:42:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-12-09 10:42:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2020-12-09 10:42:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-12-09 10:42:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 737 transitions. [2020-12-09 10:42:27,444 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 737 transitions. Word has length 82 [2020-12-09 10:42:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:27,444 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 737 transitions. [2020-12-09 10:42:27,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 737 transitions. [2020-12-09 10:42:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 10:42:27,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:27,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:27,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-09 10:42:27,445 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1828428609, now seen corresponding path program 1 times [2020-12-09 10:42:27,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:27,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035386791] [2020-12-09 10:42:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:42:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 10:42:27,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035386791] [2020-12-09 10:42:27,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:42:27,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:42:27,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787344666] [2020-12-09 10:42:27,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:42:27,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:42:27,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:42:27,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:42:27,471 INFO L87 Difference]: Start difference. First operand 530 states and 737 transitions. Second operand 3 states. [2020-12-09 10:42:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:42:27,571 INFO L93 Difference]: Finished difference Result 1060 states and 1474 transitions. [2020-12-09 10:42:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:42:27,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-09 10:42:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:42:27,574 INFO L225 Difference]: With dead ends: 1060 [2020-12-09 10:42:27,574 INFO L226 Difference]: Without dead ends: 532 [2020-12-09 10:42:27,575 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 [2020-12-09 10:42:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-12-09 10:42:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2020-12-09 10:42:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-12-09 10:42:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 732 transitions. [2020-12-09 10:42:27,591 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 732 transitions. Word has length 83 [2020-12-09 10:42:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:42:27,591 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 732 transitions. [2020-12-09 10:42:27,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:42:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 732 transitions. [2020-12-09 10:42:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-09 10:42:27,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:42:27,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:42:27,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-09 10:42:27,593 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:42:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:42:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1636560132, now seen corresponding path program 1 times [2020-12-09 10:42:27,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:42:27,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145856751] [2020-12-09 10:42:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:42:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:42:27,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:42:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:42:27,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:42:27,671 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 10:42:27,671 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 10:42:27,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-09 10:42:27,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:42:27 BoogieIcfgContainer [2020-12-09 10:42:27,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:42:27,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:42:27,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:42:27,735 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:42:27,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:42:23" (3/4) ... [2020-12-09 10:42:27,737 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 10:42:27,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_546d1e47-0ba3-4d68-8063-21ac5946cf33/bin/utaipan/witness.graphml [2020-12-09 10:42:27,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:42:27,807 INFO L168 Benchmark]: Toolchain (without parser) took 5085.77 ms. Allocated memory was 86.0 MB in the beginning and 182.5 MB in the end (delta: 96.5 MB). Free memory was 50.2 MB in the beginning and 66.5 MB in the end (delta: -16.3 MB). Peak memory consumption was 79.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,807 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:42:27,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.21 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.0 MB in the beginning and 75.3 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.38 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 72.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,808 INFO L168 Benchmark]: Boogie Preprocessor took 28.25 ms. Allocated memory is still 104.9 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,808 INFO L168 Benchmark]: RCFGBuilder took 729.11 ms. Allocated memory is still 104.9 MB. Free memory was 70.0 MB in the beginning and 60.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,808 INFO L168 Benchmark]: TraceAbstraction took 3958.62 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 60.4 MB in the beginning and 78.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,809 INFO L168 Benchmark]: Witness Printer took 70.60 ms. Allocated memory is still 182.5 MB. Free memory was 78.1 MB in the beginning and 66.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:42:27,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.21 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.0 MB in the beginning and 75.3 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.38 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 72.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.25 ms. Allocated memory is still 104.9 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 729.11 ms. Allocated memory is still 104.9 MB. Free memory was 70.0 MB in the beginning and 60.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3958.62 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 60.4 MB in the beginning and 78.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * Witness Printer took 70.60 ms. Allocated memory is still 182.5 MB. Free memory was 78.1 MB in the beginning and 66.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND FALSE !(s__info_callback != 0) [L85] COND FALSE !(s__ctx__info_callback != 0) [L89] s__in_handshake ++ [L90] COND TRUE tmp___1 + 12288 [L91] COND FALSE !(tmp___2 + 16384) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L644] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 24, TraceHistogramMax: 4, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2461 SDtfs, 3105 SDslu, 525 SDs, 0 SdLazy, 2013 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 152 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 108490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 352/352 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 incorrect! Received shutdown request...