./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.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_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/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 f7047f55ac2887c2060382be67f6b237af9da492 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:56:13,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:56:13,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:56:13,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:56:13,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:56:13,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:56:13,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:56:13,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:56:13,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:56:13,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:56:13,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:56:13,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:56:13,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:56:13,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:56:13,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:56:13,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:56:13,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:56:13,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:56:13,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:56:13,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:56:13,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:56:13,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:56:13,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:56:13,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:56:13,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:56:13,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:56:13,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:56:13,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:56:13,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:56:13,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:56:13,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:56:13,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:56:13,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:56:13,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:56:13,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:56:13,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:56:13,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:56:13,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:56:13,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:56:13,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:56:14,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:56:14,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:56:14,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:56:14,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:56:14,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:56:14,036 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:56:14,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:56:14,037 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:56:14,037 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:56:14,037 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:56:14,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:56:14,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:56:14,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:56:14,038 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:56:14,038 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:56:14,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:56:14,038 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:56:14,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:56:14,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:56:14,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:56:14,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:56:14,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:56:14,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:56:14,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:56:14,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:56:14,040 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:56:14,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:56:14,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:56:14,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:56:14,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:56:14,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:56:14,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:56:14,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:56:14,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:56:14,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:56:14,043 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_2ebb0683-af17-41e4-ad03-3dd7d19aff88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7047f55ac2887c2060382be67f6b237af9da492 [2020-12-09 19:56:14,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:56:14,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:56:14,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:56:14,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:56:14,224 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:56:14,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c [2020-12-09 19:56:14,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/data/e5d09d4ea/e8f1719c852e499a81622cdcae696bf6/FLAGd186d7856 [2020-12-09 19:56:14,664 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:56:14,664 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c [2020-12-09 19:56:14,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/data/e5d09d4ea/e8f1719c852e499a81622cdcae696bf6/FLAGd186d7856 [2020-12-09 19:56:14,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/data/e5d09d4ea/e8f1719c852e499a81622cdcae696bf6 [2020-12-09 19:56:14,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:56:14,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:56:14,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:56:14,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:56:14,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:56:14,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:14,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c6480ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14, skipping insertion in model container [2020-12-09 19:56:14,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:14,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:56:14,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:56:14,884 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_2ebb0683-af17-41e4-ad03-3dd7d19aff88/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c[42399,42412] [2020-12-09 19:56:14,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:56:14,900 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:56:14,949 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_2ebb0683-af17-41e4-ad03-3dd7d19aff88/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c[42399,42412] [2020-12-09 19:56:14,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:56:14,965 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:56:14,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14 WrapperNode [2020-12-09 19:56:14,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:56:14,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:56:14,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:56:14,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:56:14,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:14,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:56:15,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:56:15,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:56:15,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:56:15,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... [2020-12-09 19:56:15,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:56:15,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:56:15,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:56:15,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:56:15,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/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 19:56:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:56:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:56:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:56:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:56:15,215 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 19:56:15,578 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-09 19:56:15,578 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-09 19:56:15,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:56:15,807 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 19:56:15,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:56:15 BoogieIcfgContainer [2020-12-09 19:56:15,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:56:15,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:56:15,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:56:15,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:56:15,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:56:14" (1/3) ... [2020-12-09 19:56:15,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2f9ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:56:15, skipping insertion in model container [2020-12-09 19:56:15,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:14" (2/3) ... [2020-12-09 19:56:15,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2f9ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:56:15, skipping insertion in model container [2020-12-09 19:56:15,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:56:15" (3/3) ... [2020-12-09 19:56:15,815 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-12-09 19:56:15,824 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:56:15,827 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:56:15,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:56:15,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:56:15,852 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:56:15,852 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:56:15,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:56:15,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:56:15,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:56:15,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:56:15,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:56:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-12-09 19:56:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 19:56:15,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:15,868 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, 1, 1, 1] [2020-12-09 19:56:15,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1369161449, now seen corresponding path program 1 times [2020-12-09 19:56:15,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:15,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415620089] [2020-12-09 19:56:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:16,042 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 19:56:16,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415620089] [2020-12-09 19:56:16,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:16,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:16,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470897411] [2020-12-09 19:56:16,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:16,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:16,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:16,057 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-12-09 19:56:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:16,242 INFO L93 Difference]: Finished difference Result 258 states and 452 transitions. [2020-12-09 19:56:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:16,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 19:56:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:16,255 INFO L225 Difference]: With dead ends: 258 [2020-12-09 19:56:16,255 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 19:56:16,258 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 19:56:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 19:56:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2020-12-09 19:56:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-09 19:56:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 230 transitions. [2020-12-09 19:56:16,296 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 230 transitions. Word has length 39 [2020-12-09 19:56:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:16,296 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 230 transitions. [2020-12-09 19:56:16,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 230 transitions. [2020-12-09 19:56:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-09 19:56:16,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:16,298 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, 1, 1, 1, 1] [2020-12-09 19:56:16,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:56:16,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:16,299 INFO L82 PathProgramCache]: Analyzing trace with hash 498513343, now seen corresponding path program 1 times [2020-12-09 19:56:16,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:16,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56285432] [2020-12-09 19:56:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:16,355 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 19:56:16,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56285432] [2020-12-09 19:56:16,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:16,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:16,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135462035] [2020-12-09 19:56:16,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:16,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:16,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:16,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:16,358 INFO L87 Difference]: Start difference. First operand 143 states and 230 transitions. Second operand 3 states. [2020-12-09 19:56:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:16,506 INFO L93 Difference]: Finished difference Result 330 states and 540 transitions. [2020-12-09 19:56:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:16,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-09 19:56:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:16,508 INFO L225 Difference]: With dead ends: 330 [2020-12-09 19:56:16,508 INFO L226 Difference]: Without dead ends: 187 [2020-12-09 19:56:16,509 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 19:56:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-09 19:56:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2020-12-09 19:56:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-09 19:56:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 303 transitions. [2020-12-09 19:56:16,520 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 303 transitions. Word has length 40 [2020-12-09 19:56:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:16,521 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 303 transitions. [2020-12-09 19:56:16,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:16,521 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 303 transitions. [2020-12-09 19:56:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-09 19:56:16,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:16,523 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, 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 19:56:16,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:56:16,523 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:16,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash -725421733, now seen corresponding path program 1 times [2020-12-09 19:56:16,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:16,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390022770] [2020-12-09 19:56:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:56:16,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390022770] [2020-12-09 19:56:16,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:16,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:16,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764234590] [2020-12-09 19:56:16,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:16,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:16,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:16,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:16,579 INFO L87 Difference]: Start difference. First operand 182 states and 303 transitions. Second operand 3 states. [2020-12-09 19:56:16,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:16,688 INFO L93 Difference]: Finished difference Result 391 states and 658 transitions. [2020-12-09 19:56:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:16,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-09 19:56:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:16,690 INFO L225 Difference]: With dead ends: 391 [2020-12-09 19:56:16,690 INFO L226 Difference]: Without dead ends: 211 [2020-12-09 19:56:16,691 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 19:56:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-12-09 19:56:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-12-09 19:56:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-12-09 19:56:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 355 transitions. [2020-12-09 19:56:16,706 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 355 transitions. Word has length 66 [2020-12-09 19:56:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:16,706 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 355 transitions. [2020-12-09 19:56:16,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 355 transitions. [2020-12-09 19:56:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 19:56:16,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:16,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:16,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:56:16,711 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:16,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1243135150, now seen corresponding path program 1 times [2020-12-09 19:56:16,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:16,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080153493] [2020-12-09 19:56:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 19:56:16,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080153493] [2020-12-09 19:56:16,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:16,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:16,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527415543] [2020-12-09 19:56:16,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:16,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:16,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:16,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:16,760 INFO L87 Difference]: Start difference. First operand 211 states and 355 transitions. Second operand 3 states. [2020-12-09 19:56:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:16,841 INFO L93 Difference]: Finished difference Result 435 states and 732 transitions. [2020-12-09 19:56:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:16,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 19:56:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:16,842 INFO L225 Difference]: With dead ends: 435 [2020-12-09 19:56:16,842 INFO L226 Difference]: Without dead ends: 226 [2020-12-09 19:56:16,843 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 19:56:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-09 19:56:16,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2020-12-09 19:56:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-09 19:56:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 374 transitions. [2020-12-09 19:56:16,852 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 374 transitions. Word has length 77 [2020-12-09 19:56:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:16,853 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 374 transitions. [2020-12-09 19:56:16,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 374 transitions. [2020-12-09 19:56:16,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 19:56:16,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:16,854 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:16,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:56:16,854 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:16,855 INFO L82 PathProgramCache]: Analyzing trace with hash -890373956, now seen corresponding path program 1 times [2020-12-09 19:56:16,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:16,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495488522] [2020-12-09 19:56:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:56:16,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495488522] [2020-12-09 19:56:16,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:16,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:16,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349117600] [2020-12-09 19:56:16,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:16,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:16,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:16,902 INFO L87 Difference]: Start difference. First operand 224 states and 374 transitions. Second operand 3 states. [2020-12-09 19:56:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,008 INFO L93 Difference]: Finished difference Result 487 states and 819 transitions. [2020-12-09 19:56:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 19:56:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,010 INFO L225 Difference]: With dead ends: 487 [2020-12-09 19:56:17,010 INFO L226 Difference]: Without dead ends: 265 [2020-12-09 19:56:17,011 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 19:56:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-12-09 19:56:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2020-12-09 19:56:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-09 19:56:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 442 transitions. [2020-12-09 19:56:17,020 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 442 transitions. Word has length 77 [2020-12-09 19:56:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,020 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 442 transitions. [2020-12-09 19:56:17,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 442 transitions. [2020-12-09 19:56:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 19:56:17,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:17,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 19:56:17,022 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1231568959, now seen corresponding path program 1 times [2020-12-09 19:56:17,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159926985] [2020-12-09 19:56:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 19:56:17,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159926985] [2020-12-09 19:56:17,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370858508] [2020-12-09 19:56:17,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,063 INFO L87 Difference]: Start difference. First operand 262 states and 442 transitions. Second operand 3 states. [2020-12-09 19:56:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,150 INFO L93 Difference]: Finished difference Result 524 states and 884 transitions. [2020-12-09 19:56:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 19:56:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,152 INFO L225 Difference]: With dead ends: 524 [2020-12-09 19:56:17,152 INFO L226 Difference]: Without dead ends: 264 [2020-12-09 19:56:17,153 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 19:56:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-09 19:56:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-12-09 19:56:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-09 19:56:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 438 transitions. [2020-12-09 19:56:17,167 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 438 transitions. Word has length 78 [2020-12-09 19:56:17,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,167 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 438 transitions. [2020-12-09 19:56:17,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 438 transitions. [2020-12-09 19:56:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 19:56:17,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,169 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:17,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 19:56:17,169 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,170 INFO L82 PathProgramCache]: Analyzing trace with hash -433423356, now seen corresponding path program 1 times [2020-12-09 19:56:17,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660792216] [2020-12-09 19:56:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:56:17,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660792216] [2020-12-09 19:56:17,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601703932] [2020-12-09 19:56:17,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,218 INFO L87 Difference]: Start difference. First operand 262 states and 438 transitions. Second operand 3 states. [2020-12-09 19:56:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,346 INFO L93 Difference]: Finished difference Result 525 states and 877 transitions. [2020-12-09 19:56:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 19:56:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,348 INFO L225 Difference]: With dead ends: 525 [2020-12-09 19:56:17,348 INFO L226 Difference]: Without dead ends: 263 [2020-12-09 19:56:17,349 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 19:56:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-09 19:56:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2020-12-09 19:56:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-09 19:56:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 433 transitions. [2020-12-09 19:56:17,356 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 433 transitions. Word has length 78 [2020-12-09 19:56:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,357 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 433 transitions. [2020-12-09 19:56:17,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 433 transitions. [2020-12-09 19:56:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 19:56:17,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,358 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:17,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 19:56:17,358 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash 130623586, now seen corresponding path program 1 times [2020-12-09 19:56:17,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270197504] [2020-12-09 19:56:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 19:56:17,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270197504] [2020-12-09 19:56:17,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699522073] [2020-12-09 19:56:17,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,390 INFO L87 Difference]: Start difference. First operand 260 states and 433 transitions. Second operand 3 states. [2020-12-09 19:56:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,468 INFO L93 Difference]: Finished difference Result 525 states and 873 transitions. [2020-12-09 19:56:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 19:56:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,470 INFO L225 Difference]: With dead ends: 525 [2020-12-09 19:56:17,470 INFO L226 Difference]: Without dead ends: 267 [2020-12-09 19:56:17,471 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 19:56:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-09 19:56:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-12-09 19:56:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-12-09 19:56:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 436 transitions. [2020-12-09 19:56:17,479 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 436 transitions. Word has length 86 [2020-12-09 19:56:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,479 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 436 transitions. [2020-12-09 19:56:17,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 436 transitions. [2020-12-09 19:56:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 19:56:17,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 19:56:17,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 19:56:17,480 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2115729227, now seen corresponding path program 1 times [2020-12-09 19:56:17,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854432122] [2020-12-09 19:56:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 19:56:17,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854432122] [2020-12-09 19:56:17,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737432043] [2020-12-09 19:56:17,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,510 INFO L87 Difference]: Start difference. First operand 267 states and 436 transitions. Second operand 3 states. [2020-12-09 19:56:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,622 INFO L93 Difference]: Finished difference Result 561 states and 919 transitions. [2020-12-09 19:56:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 19:56:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,624 INFO L225 Difference]: With dead ends: 561 [2020-12-09 19:56:17,624 INFO L226 Difference]: Without dead ends: 296 [2020-12-09 19:56:17,625 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 19:56:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-09 19:56:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 294. [2020-12-09 19:56:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-12-09 19:56:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 479 transitions. [2020-12-09 19:56:17,633 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 479 transitions. Word has length 91 [2020-12-09 19:56:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,633 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 479 transitions. [2020-12-09 19:56:17,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 479 transitions. [2020-12-09 19:56:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 19:56:17,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 19:56:17,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 19:56:17,634 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,635 INFO L82 PathProgramCache]: Analyzing trace with hash -349900990, now seen corresponding path program 1 times [2020-12-09 19:56:17,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266104772] [2020-12-09 19:56:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 19:56:17,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266104772] [2020-12-09 19:56:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082149521] [2020-12-09 19:56:17,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,661 INFO L87 Difference]: Start difference. First operand 294 states and 479 transitions. Second operand 3 states. [2020-12-09 19:56:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,763 INFO L93 Difference]: Finished difference Result 588 states and 958 transitions. [2020-12-09 19:56:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 19:56:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,765 INFO L225 Difference]: With dead ends: 588 [2020-12-09 19:56:17,765 INFO L226 Difference]: Without dead ends: 296 [2020-12-09 19:56:17,765 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 19:56:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-09 19:56:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 294. [2020-12-09 19:56:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-12-09 19:56:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 475 transitions. [2020-12-09 19:56:17,773 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 475 transitions. Word has length 92 [2020-12-09 19:56:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,774 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 475 transitions. [2020-12-09 19:56:17,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 475 transitions. [2020-12-09 19:56:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-09 19:56:17,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:17,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 19:56:17,775 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1571049317, now seen corresponding path program 1 times [2020-12-09 19:56:17,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984120443] [2020-12-09 19:56:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 19:56:17,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984120443] [2020-12-09 19:56:17,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546771906] [2020-12-09 19:56:17,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,801 INFO L87 Difference]: Start difference. First operand 294 states and 475 transitions. Second operand 3 states. [2020-12-09 19:56:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:17,909 INFO L93 Difference]: Finished difference Result 619 states and 1004 transitions. [2020-12-09 19:56:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:17,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-09 19:56:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:17,911 INFO L225 Difference]: With dead ends: 619 [2020-12-09 19:56:17,911 INFO L226 Difference]: Without dead ends: 327 [2020-12-09 19:56:17,912 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 19:56:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-09 19:56:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-12-09 19:56:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-12-09 19:56:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 513 transitions. [2020-12-09 19:56:17,920 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 513 transitions. Word has length 93 [2020-12-09 19:56:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:17,921 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 513 transitions. [2020-12-09 19:56:17,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 513 transitions. [2020-12-09 19:56:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 19:56:17,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:17,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:17,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 19:56:17,922 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1140946036, now seen corresponding path program 1 times [2020-12-09 19:56:17,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:17,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709453294] [2020-12-09 19:56:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 19:56:17,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709453294] [2020-12-09 19:56:17,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:17,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:17,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152459374] [2020-12-09 19:56:17,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:17,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:17,950 INFO L87 Difference]: Start difference. First operand 319 states and 513 transitions. Second operand 3 states. [2020-12-09 19:56:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:18,058 INFO L93 Difference]: Finished difference Result 657 states and 1057 transitions. [2020-12-09 19:56:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:18,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 19:56:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:18,060 INFO L225 Difference]: With dead ends: 657 [2020-12-09 19:56:18,060 INFO L226 Difference]: Without dead ends: 340 [2020-12-09 19:56:18,060 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 19:56:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-09 19:56:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-12-09 19:56:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-09 19:56:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 538 transitions. [2020-12-09 19:56:18,070 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 538 transitions. Word has length 94 [2020-12-09 19:56:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:18,070 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 538 transitions. [2020-12-09 19:56:18,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 538 transitions. [2020-12-09 19:56:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 19:56:18,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:18,071 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:18,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 19:56:18,071 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2098544146, now seen corresponding path program 1 times [2020-12-09 19:56:18,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:18,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361289025] [2020-12-09 19:56:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 19:56:18,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361289025] [2020-12-09 19:56:18,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:18,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:18,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324104855] [2020-12-09 19:56:18,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:18,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:18,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:18,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:18,105 INFO L87 Difference]: Start difference. First operand 338 states and 538 transitions. Second operand 3 states. [2020-12-09 19:56:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:18,207 INFO L93 Difference]: Finished difference Result 682 states and 1087 transitions. [2020-12-09 19:56:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:18,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 19:56:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:18,209 INFO L225 Difference]: With dead ends: 682 [2020-12-09 19:56:18,209 INFO L226 Difference]: Without dead ends: 346 [2020-12-09 19:56:18,210 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 19:56:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-09 19:56:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 338. [2020-12-09 19:56:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-09 19:56:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 533 transitions. [2020-12-09 19:56:18,220 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 533 transitions. Word has length 94 [2020-12-09 19:56:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:18,220 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 533 transitions. [2020-12-09 19:56:18,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 533 transitions. [2020-12-09 19:56:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 19:56:18,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:18,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:18,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 19:56:18,222 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:18,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:18,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1664923321, now seen corresponding path program 1 times [2020-12-09 19:56:18,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:18,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345940916] [2020-12-09 19:56:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:56:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 19:56:18,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345940916] [2020-12-09 19:56:18,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:56:18,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:56:18,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057970265] [2020-12-09 19:56:18,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:56:18,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:56:18,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:56:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:56:18,247 INFO L87 Difference]: Start difference. First operand 338 states and 533 transitions. Second operand 3 states. [2020-12-09 19:56:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:56:18,359 INFO L93 Difference]: Finished difference Result 676 states and 1066 transitions. [2020-12-09 19:56:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:56:18,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 19:56:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:56:18,361 INFO L225 Difference]: With dead ends: 676 [2020-12-09 19:56:18,361 INFO L226 Difference]: Without dead ends: 340 [2020-12-09 19:56:18,361 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 19:56:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-09 19:56:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-12-09 19:56:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-09 19:56:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 527 transitions. [2020-12-09 19:56:18,374 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 527 transitions. Word has length 95 [2020-12-09 19:56:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:56:18,374 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 527 transitions. [2020-12-09 19:56:18,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:56:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 527 transitions. [2020-12-09 19:56:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 19:56:18,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:56:18,376 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:56:18,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 19:56:18,376 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:56:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:56:18,376 INFO L82 PathProgramCache]: Analyzing trace with hash -41415129, now seen corresponding path program 1 times [2020-12-09 19:56:18,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:56:18,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187370343] [2020-12-09 19:56:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:56:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:56:18,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:56:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:56:18,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:56:18,474 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:56:18,474 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:56:18,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 19:56:18,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:56:18 BoogieIcfgContainer [2020-12-09 19:56:18,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:56:18,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:56:18,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:56:18,543 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:56:18,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:56:15" (3/4) ... [2020-12-09 19:56:18,545 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:56:18,609 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2ebb0683-af17-41e4-ad03-3dd7d19aff88/bin/utaipan/witness.graphml [2020-12-09 19:56:18,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:56:18,610 INFO L168 Benchmark]: Toolchain (without parser) took 3921.12 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 81.3 MB in the beginning and 103.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,610 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:56:18,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.47 ms. Allocated memory is still 102.8 MB. Free memory was 81.1 MB in the beginning and 66.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.80 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 63.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,611 INFO L168 Benchmark]: Boogie Preprocessor took 38.00 ms. Allocated memory is still 102.8 MB. Free memory was 63.3 MB in the beginning and 61.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,611 INFO L168 Benchmark]: RCFGBuilder took 753.65 ms. Allocated memory is still 102.8 MB. Free memory was 61.2 MB in the beginning and 46.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,611 INFO L168 Benchmark]: TraceAbstraction took 2732.03 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 45.4 MB in the beginning and 117.2 MB in the end (delta: -71.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,612 INFO L168 Benchmark]: Witness Printer took 65.90 ms. Allocated memory is still 180.4 MB. Free memory was 117.2 MB in the beginning and 103.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:56:18,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.47 ms. Allocated memory is still 102.8 MB. Free memory was 81.1 MB in the beginning and 66.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.80 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 63.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.00 ms. Allocated memory is still 102.8 MB. Free memory was 63.3 MB in the beginning and 61.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 753.65 ms. Allocated memory is still 102.8 MB. Free memory was 61.2 MB in the beginning and 46.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2732.03 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 45.4 MB in the beginning and 117.2 MB in the end (delta: -71.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 65.90 ms. Allocated memory is still 180.4 MB. Free memory was 117.2 MB in the beginning and 103.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 609]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L614] int s ; [L615] int tmp ; [L619] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [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 ; [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 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] tmp = __VERIFIER_nondet_int() [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND TRUE tmp___1 + 12288 [L92] COND TRUE tmp___2 + 16384 [L96] COND FALSE !(s__cert == 0) [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND TRUE s__state == 8464 [L273] s__shutdown = 0 [L274] ret = __VERIFIER_nondet_int() [L275] COND TRUE blastFlag == 0 [L276] blastFlag = 1 [L278] COND FALSE !(ret <= 0) [L281] got_new_session = 1 [L282] s__state = 8496 [L283] s__init_num = 0 [L581] COND FALSE !(! s__s3__tmp__reuse_message) [L598] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND TRUE s__state == 8496 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L295] COND FALSE !(ret <= 0) [L298] COND TRUE \read(s__hit) [L299] s__state = 8656 [L303] s__init_num = 0 [L581] COND FALSE !(! s__s3__tmp__reuse_message) [L598] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND FALSE !(s__state == 8448) [L169] COND FALSE !(s__state == 8576) [L172] COND FALSE !(s__state == 8577) [L175] COND FALSE !(s__state == 8592) [L178] COND FALSE !(s__state == 8593) [L181] COND FALSE !(s__state == 8608) [L184] COND FALSE !(s__state == 8609) [L187] COND FALSE !(s__state == 8640) [L190] COND FALSE !(s__state == 8641) [L193] COND TRUE s__state == 8656 [L492] s__session__cipher = s__s3__tmp__new_cipher [L493] COND FALSE !(! tmp___9) [L497] ret = __VERIFIER_nondet_int() [L498] COND TRUE blastFlag == 2 [L499] blastFlag = 3 [L501] COND FALSE !(ret <= 0) [L504] s__state = 8672 [L505] s__init_num = 0 [L506] COND FALSE !(! tmp___10) [L581] COND FALSE !(! s__s3__tmp__reuse_message) [L598] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND FALSE !(s__state == 8448) [L169] COND FALSE !(s__state == 8576) [L172] COND FALSE !(s__state == 8577) [L175] COND FALSE !(s__state == 8592) [L178] COND FALSE !(s__state == 8593) [L181] COND FALSE !(s__state == 8608) [L184] COND FALSE !(s__state == 8609) [L187] COND FALSE !(s__state == 8640) [L190] COND FALSE !(s__state == 8641) [L193] COND FALSE !(s__state == 8656) [L196] COND FALSE !(s__state == 8657) [L199] COND TRUE s__state == 8672 [L513] ret = __VERIFIER_nondet_int() [L514] COND TRUE blastFlag == 3 [L609] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 106 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 15, TraceHistogramMax: 4, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1247 SDtfs, 1552 SDslu, 164 SDs, 0 SdLazy, 1291 SolverSat, 569 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 44 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 1208 NumberOfCodeBlocks, 1208 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1086 ConstructedInterpolants, 0 QuantifiedInterpolants, 153466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 603/603 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...