./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:25,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:25,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:25,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:25,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:25,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:25,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:25,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:25,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:25,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:25,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:25,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:25,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:25,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:25,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:25,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:25,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:25,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:25,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:25,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:25,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:25,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:25,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:25,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:25,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:25,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:25,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:25,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:25,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:25,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:25,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:25,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:25,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:25,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:25,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:25,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:25,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:25,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:25,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:25,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:25,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:25,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:25,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:25,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:25,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:25,328 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:25,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:25,328 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:25,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:25,329 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:25,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:25,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:25,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:25,330 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:25,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:25,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:25,330 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:25,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:25,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:25,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:25,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:25,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:25,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:25,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:25,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:25,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:25,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:25,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:25,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:25,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:25,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:25,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:25,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:25,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:25,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:25,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:25,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:25,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:25,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:25,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:25,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:25,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:25,337 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_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b [2020-11-28 07:42:25,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:25,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:25,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:25,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:25,618 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:25,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-11-28 07:42:25,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/data/6eb47f0f6/dc43811ce58641118fe4e09e7427ab2d/FLAG7a49da651 [2020-11-28 07:42:26,213 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:26,214 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-11-28 07:42:26,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/data/6eb47f0f6/dc43811ce58641118fe4e09e7427ab2d/FLAG7a49da651 [2020-11-28 07:42:26,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/data/6eb47f0f6/dc43811ce58641118fe4e09e7427ab2d [2020-11-28 07:42:26,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:26,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:26,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:26,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:26,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:26,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f60da72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26, skipping insertion in model container [2020-11-28 07:42:26,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:26,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:26,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:26,949 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:27,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:27,049 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:27,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27 WrapperNode [2020-11-28 07:42:27,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:27,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:27,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:27,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:27,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:27,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:27,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:27,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:27,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... [2020-11-28 07:42:27,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:27,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:27,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:27,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:27,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/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 [2020-11-28 07:42:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:27,379 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 07:42:28,348 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-28 07:42:28,349 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-28 07:42:28,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:28,794 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:28,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:28 BoogieIcfgContainer [2020-11-28 07:42:28,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:28,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:28,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:28,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:28,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:26" (1/3) ... [2020-11-28 07:42:28,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6411fd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:28, skipping insertion in model container [2020-11-28 07:42:28,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:27" (2/3) ... [2020-11-28 07:42:28,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6411fd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:28, skipping insertion in model container [2020-11-28 07:42:28,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:28" (3/3) ... [2020-11-28 07:42:28,806 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-11-28 07:42:28,818 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:28,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:28,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:28,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:28,864 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:28,864 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:28,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:28,865 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:28,865 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:28,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:28,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-11-28 07:42:28,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:42:28,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:28,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:28,891 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash 2146354376, now seen corresponding path program 1 times [2020-11-28 07:42:28,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:28,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523675506] [2020-11-28 07:42:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:29,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523675506] [2020-11-28 07:42:29,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:29,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:29,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619094209] [2020-11-28 07:42:29,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:29,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:29,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:29,160 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2020-11-28 07:42:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:29,441 INFO L93 Difference]: Finished difference Result 247 states and 429 transitions. [2020-11-28 07:42:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:29,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 07:42:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:29,469 INFO L225 Difference]: With dead ends: 247 [2020-11-28 07:42:29,469 INFO L226 Difference]: Without dead ends: 129 [2020-11-28 07:42:29,472 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 [2020-11-28 07:42:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-28 07:42:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-11-28 07:42:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-28 07:42:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2020-11-28 07:42:29,563 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 19 [2020-11-28 07:42:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:29,563 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2020-11-28 07:42:29,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2020-11-28 07:42:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:42:29,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:29,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:29,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:29,565 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:29,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:29,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1515612529, now seen corresponding path program 1 times [2020-11-28 07:42:29,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:29,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019746013] [2020-11-28 07:42:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:29,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019746013] [2020-11-28 07:42:29,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:29,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:29,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147558716] [2020-11-28 07:42:29,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:29,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:29,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:29,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:29,658 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand 3 states. [2020-11-28 07:42:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:29,861 INFO L93 Difference]: Finished difference Result 265 states and 397 transitions. [2020-11-28 07:42:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:29,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 07:42:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:29,864 INFO L225 Difference]: With dead ends: 265 [2020-11-28 07:42:29,864 INFO L226 Difference]: Without dead ends: 138 [2020-11-28 07:42:29,866 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 [2020-11-28 07:42:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-28 07:42:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-11-28 07:42:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 07:42:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 195 transitions. [2020-11-28 07:42:29,891 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 195 transitions. Word has length 21 [2020-11-28 07:42:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:29,892 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 195 transitions. [2020-11-28 07:42:29,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 195 transitions. [2020-11-28 07:42:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:42:29,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:29,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:29,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:29,894 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:29,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:29,894 INFO L82 PathProgramCache]: Analyzing trace with hash 103097799, now seen corresponding path program 1 times [2020-11-28 07:42:29,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:29,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477933653] [2020-11-28 07:42:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:29,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477933653] [2020-11-28 07:42:29,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:29,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:29,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90245045] [2020-11-28 07:42:29,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:29,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:29,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:29,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:29,992 INFO L87 Difference]: Start difference. First operand 130 states and 195 transitions. Second operand 3 states. [2020-11-28 07:42:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:30,185 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-11-28 07:42:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:30,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 07:42:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:30,188 INFO L225 Difference]: With dead ends: 276 [2020-11-28 07:42:30,188 INFO L226 Difference]: Without dead ends: 148 [2020-11-28 07:42:30,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-28 07:42:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-11-28 07:42:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 07:42:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2020-11-28 07:42:30,214 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 21 [2020-11-28 07:42:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:30,214 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2020-11-28 07:42:30,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2020-11-28 07:42:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:42:30,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:30,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:30,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:30,218 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:30,220 INFO L82 PathProgramCache]: Analyzing trace with hash -889708936, now seen corresponding path program 1 times [2020-11-28 07:42:30,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:30,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368656876] [2020-11-28 07:42:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:30,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368656876] [2020-11-28 07:42:30,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:30,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:30,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771841481] [2020-11-28 07:42:30,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:30,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:30,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:30,333 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand 3 states. [2020-11-28 07:42:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:30,510 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2020-11-28 07:42:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:30,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 07:42:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:30,512 INFO L225 Difference]: With dead ends: 296 [2020-11-28 07:42:30,512 INFO L226 Difference]: Without dead ends: 152 [2020-11-28 07:42:30,514 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 [2020-11-28 07:42:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-28 07:42:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-11-28 07:42:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-28 07:42:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-11-28 07:42:30,539 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 21 [2020-11-28 07:42:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:30,540 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-11-28 07:42:30,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-11-28 07:42:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:42:30,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:30,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:30,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:30,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:30,545 INFO L82 PathProgramCache]: Analyzing trace with hash -899497850, now seen corresponding path program 1 times [2020-11-28 07:42:30,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:30,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764265256] [2020-11-28 07:42:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:30,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764265256] [2020-11-28 07:42:30,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:30,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:30,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227288361] [2020-11-28 07:42:30,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:30,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:30,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:30,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:30,614 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 3 states. [2020-11-28 07:42:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:30,787 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2020-11-28 07:42:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:30,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 07:42:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:30,789 INFO L225 Difference]: With dead ends: 310 [2020-11-28 07:42:30,789 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 07:42:30,790 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 [2020-11-28 07:42:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 07:42:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-11-28 07:42:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-28 07:42:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 228 transitions. [2020-11-28 07:42:30,800 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 228 transitions. Word has length 22 [2020-11-28 07:42:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:30,800 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 228 transitions. [2020-11-28 07:42:30,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 228 transitions. [2020-11-28 07:42:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:42:30,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:30,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:30,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:42:30,802 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:30,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:30,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1321732580, now seen corresponding path program 1 times [2020-11-28 07:42:30,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:30,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856135738] [2020-11-28 07:42:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:30,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856135738] [2020-11-28 07:42:30,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:30,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:30,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963397182] [2020-11-28 07:42:30,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:30,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:30,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:30,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:30,849 INFO L87 Difference]: Start difference. First operand 152 states and 228 transitions. Second operand 3 states. [2020-11-28 07:42:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,011 INFO L93 Difference]: Finished difference Result 304 states and 456 transitions. [2020-11-28 07:42:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:31,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 07:42:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,013 INFO L225 Difference]: With dead ends: 304 [2020-11-28 07:42:31,013 INFO L226 Difference]: Without dead ends: 154 [2020-11-28 07:42:31,014 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 [2020-11-28 07:42:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-28 07:42:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-11-28 07:42:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-28 07:42:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 227 transitions. [2020-11-28 07:42:31,031 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 227 transitions. Word has length 22 [2020-11-28 07:42:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,034 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 227 transitions. [2020-11-28 07:42:31,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 227 transitions. [2020-11-28 07:42:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:42:31,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:31,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:42:31,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:31,042 INFO L82 PathProgramCache]: Analyzing trace with hash -281894378, now seen corresponding path program 1 times [2020-11-28 07:42:31,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:31,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220584561] [2020-11-28 07:42:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220584561] [2020-11-28 07:42:31,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:31,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:31,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211764400] [2020-11-28 07:42:31,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:31,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:31,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:31,083 INFO L87 Difference]: Start difference. First operand 152 states and 227 transitions. Second operand 3 states. [2020-11-28 07:42:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,237 INFO L93 Difference]: Finished difference Result 310 states and 461 transitions. [2020-11-28 07:42:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:31,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 07:42:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,239 INFO L225 Difference]: With dead ends: 310 [2020-11-28 07:42:31,239 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 07:42:31,240 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 [2020-11-28 07:42:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 07:42:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-11-28 07:42:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-28 07:42:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2020-11-28 07:42:31,250 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 23 [2020-11-28 07:42:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,250 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2020-11-28 07:42:31,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2020-11-28 07:42:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:42:31,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:31,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:42:31,252 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash -139442037, now seen corresponding path program 1 times [2020-11-28 07:42:31,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:31,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907329057] [2020-11-28 07:42:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907329057] [2020-11-28 07:42:31,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:31,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:31,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002490515] [2020-11-28 07:42:31,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:31,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:31,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:31,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:31,311 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand 3 states. [2020-11-28 07:42:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,449 INFO L93 Difference]: Finished difference Result 310 states and 457 transitions. [2020-11-28 07:42:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:31,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 07:42:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,450 INFO L225 Difference]: With dead ends: 310 [2020-11-28 07:42:31,450 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 07:42:31,451 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 [2020-11-28 07:42:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 07:42:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-11-28 07:42:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-28 07:42:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 223 transitions. [2020-11-28 07:42:31,462 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 223 transitions. Word has length 24 [2020-11-28 07:42:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,462 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 223 transitions. [2020-11-28 07:42:31,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 223 transitions. [2020-11-28 07:42:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:42:31,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:31,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:42:31,469 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:31,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1127250806, now seen corresponding path program 1 times [2020-11-28 07:42:31,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:31,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104794367] [2020-11-28 07:42:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104794367] [2020-11-28 07:42:31,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:31,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:31,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469901862] [2020-11-28 07:42:31,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:31,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:31,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:31,557 INFO L87 Difference]: Start difference. First operand 152 states and 223 transitions. Second operand 4 states. [2020-11-28 07:42:31,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,830 INFO L93 Difference]: Finished difference Result 441 states and 647 transitions. [2020-11-28 07:42:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:31,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 07:42:31,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,833 INFO L225 Difference]: With dead ends: 441 [2020-11-28 07:42:31,833 INFO L226 Difference]: Without dead ends: 291 [2020-11-28 07:42:31,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-28 07:42:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 259. [2020-11-28 07:42:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-11-28 07:42:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 381 transitions. [2020-11-28 07:42:31,853 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 381 transitions. Word has length 24 [2020-11-28 07:42:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,857 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 381 transitions. [2020-11-28 07:42:31,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 381 transitions. [2020-11-28 07:42:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:42:31,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:31,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:42:31,859 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:31,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1174219302, now seen corresponding path program 1 times [2020-11-28 07:42:31,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:31,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961469626] [2020-11-28 07:42:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961469626] [2020-11-28 07:42:31,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:31,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:31,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264561360] [2020-11-28 07:42:31,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:31,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:31,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:31,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:31,910 INFO L87 Difference]: Start difference. First operand 259 states and 381 transitions. Second operand 3 states. [2020-11-28 07:42:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:32,100 INFO L93 Difference]: Finished difference Result 591 states and 881 transitions. [2020-11-28 07:42:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:32,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-28 07:42:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:32,103 INFO L225 Difference]: With dead ends: 591 [2020-11-28 07:42:32,103 INFO L226 Difference]: Without dead ends: 334 [2020-11-28 07:42:32,104 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 [2020-11-28 07:42:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-11-28 07:42:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2020-11-28 07:42:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-11-28 07:42:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 466 transitions. [2020-11-28 07:42:32,127 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 466 transitions. Word has length 28 [2020-11-28 07:42:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:32,129 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 466 transitions. [2020-11-28 07:42:32,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 466 transitions. [2020-11-28 07:42:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 07:42:32,130 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:32,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:32,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:42:32,130 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:32,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1065639025, now seen corresponding path program 1 times [2020-11-28 07:42:32,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:32,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535744204] [2020-11-28 07:42:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:32,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535744204] [2020-11-28 07:42:32,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:32,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:32,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973014024] [2020-11-28 07:42:32,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:32,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:32,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:32,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:32,184 INFO L87 Difference]: Start difference. First operand 314 states and 466 transitions. Second operand 3 states. [2020-11-28 07:42:32,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:32,365 INFO L93 Difference]: Finished difference Result 648 states and 967 transitions. [2020-11-28 07:42:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:32,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-28 07:42:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:32,368 INFO L225 Difference]: With dead ends: 648 [2020-11-28 07:42:32,368 INFO L226 Difference]: Without dead ends: 336 [2020-11-28 07:42:32,369 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 [2020-11-28 07:42:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-11-28 07:42:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 325. [2020-11-28 07:42:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-11-28 07:42:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 485 transitions. [2020-11-28 07:42:32,389 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 485 transitions. Word has length 29 [2020-11-28 07:42:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:32,389 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 485 transitions. [2020-11-28 07:42:32,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 485 transitions. [2020-11-28 07:42:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 07:42:32,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:32,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:32,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:42:32,391 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 411074125, now seen corresponding path program 1 times [2020-11-28 07:42:32,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:32,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44458552] [2020-11-28 07:42:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:32,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44458552] [2020-11-28 07:42:32,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:32,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:32,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350921428] [2020-11-28 07:42:32,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:32,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:32,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:32,445 INFO L87 Difference]: Start difference. First operand 325 states and 485 transitions. Second operand 3 states. [2020-11-28 07:42:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:32,649 INFO L93 Difference]: Finished difference Result 709 states and 1064 transitions. [2020-11-28 07:42:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:32,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-11-28 07:42:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:32,652 INFO L225 Difference]: With dead ends: 709 [2020-11-28 07:42:32,652 INFO L226 Difference]: Without dead ends: 386 [2020-11-28 07:42:32,653 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 [2020-11-28 07:42:32,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-11-28 07:42:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 378. [2020-11-28 07:42:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-11-28 07:42:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 570 transitions. [2020-11-28 07:42:32,678 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 570 transitions. Word has length 35 [2020-11-28 07:42:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:32,680 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 570 transitions. [2020-11-28 07:42:32,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 570 transitions. [2020-11-28 07:42:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 07:42:32,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:32,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:32,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:42:32,682 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:32,682 INFO L82 PathProgramCache]: Analyzing trace with hash -148612451, now seen corresponding path program 1 times [2020-11-28 07:42:32,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:32,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737383714] [2020-11-28 07:42:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:32,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737383714] [2020-11-28 07:42:32,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:32,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:32,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410912368] [2020-11-28 07:42:32,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:32,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:32,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:32,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:32,733 INFO L87 Difference]: Start difference. First operand 378 states and 570 transitions. Second operand 3 states. [2020-11-28 07:42:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:32,926 INFO L93 Difference]: Finished difference Result 760 states and 1145 transitions. [2020-11-28 07:42:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:32,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-28 07:42:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:32,930 INFO L225 Difference]: With dead ends: 760 [2020-11-28 07:42:32,931 INFO L226 Difference]: Without dead ends: 384 [2020-11-28 07:42:32,931 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 [2020-11-28 07:42:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-11-28 07:42:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2020-11-28 07:42:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-11-28 07:42:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2020-11-28 07:42:32,956 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 36 [2020-11-28 07:42:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:32,957 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2020-11-28 07:42:32,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2020-11-28 07:42:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-28 07:42:32,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:32,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:32,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:42:32,958 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1262608608, now seen corresponding path program 1 times [2020-11-28 07:42:32,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:32,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864752492] [2020-11-28 07:42:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:33,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864752492] [2020-11-28 07:42:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:33,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:33,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52607045] [2020-11-28 07:42:33,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:33,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:33,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:33,030 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand 3 states. [2020-11-28 07:42:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:33,221 INFO L93 Difference]: Finished difference Result 752 states and 1132 transitions. [2020-11-28 07:42:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:33,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-11-28 07:42:33,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:33,225 INFO L225 Difference]: With dead ends: 752 [2020-11-28 07:42:33,225 INFO L226 Difference]: Without dead ends: 375 [2020-11-28 07:42:33,227 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 [2020-11-28 07:42:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-11-28 07:42:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2020-11-28 07:42:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-11-28 07:42:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 544 transitions. [2020-11-28 07:42:33,253 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 544 transitions. Word has length 54 [2020-11-28 07:42:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:33,254 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 544 transitions. [2020-11-28 07:42:33,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 544 transitions. [2020-11-28 07:42:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-28 07:42:33,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:33,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:33,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:42:33,255 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1561790016, now seen corresponding path program 1 times [2020-11-28 07:42:33,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:33,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484485143] [2020-11-28 07:42:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:42:33,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484485143] [2020-11-28 07:42:33,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:33,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:33,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304903262] [2020-11-28 07:42:33,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:33,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:33,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:33,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:33,312 INFO L87 Difference]: Start difference. First operand 365 states and 544 transitions. Second operand 3 states. [2020-11-28 07:42:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:33,471 INFO L93 Difference]: Finished difference Result 764 states and 1136 transitions. [2020-11-28 07:42:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:33,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-11-28 07:42:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:33,475 INFO L225 Difference]: With dead ends: 764 [2020-11-28 07:42:33,475 INFO L226 Difference]: Without dead ends: 401 [2020-11-28 07:42:33,476 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 [2020-11-28 07:42:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-11-28 07:42:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2020-11-28 07:42:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-28 07:42:33,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 580 transitions. [2020-11-28 07:42:33,499 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 580 transitions. Word has length 55 [2020-11-28 07:42:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:33,500 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 580 transitions. [2020-11-28 07:42:33,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 580 transitions. [2020-11-28 07:42:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-28 07:42:33,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:33,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:33,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:42:33,501 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2004988885, now seen corresponding path program 1 times [2020-11-28 07:42:33,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:33,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913663675] [2020-11-28 07:42:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:42:33,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913663675] [2020-11-28 07:42:33,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:33,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:33,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480142370] [2020-11-28 07:42:33,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:33,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:33,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:33,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:33,553 INFO L87 Difference]: Start difference. First operand 393 states and 580 transitions. Second operand 3 states. [2020-11-28 07:42:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:33,722 INFO L93 Difference]: Finished difference Result 788 states and 1163 transitions. [2020-11-28 07:42:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:33,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-28 07:42:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:33,726 INFO L225 Difference]: With dead ends: 788 [2020-11-28 07:42:33,726 INFO L226 Difference]: Without dead ends: 397 [2020-11-28 07:42:33,727 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 [2020-11-28 07:42:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-28 07:42:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 393. [2020-11-28 07:42:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-28 07:42:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 576 transitions. [2020-11-28 07:42:33,750 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 576 transitions. Word has length 56 [2020-11-28 07:42:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:33,751 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 576 transitions. [2020-11-28 07:42:33,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 576 transitions. [2020-11-28 07:42:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-28 07:42:33,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:33,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:33,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:42:33,752 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:33,753 INFO L82 PathProgramCache]: Analyzing trace with hash 879081452, now seen corresponding path program 1 times [2020-11-28 07:42:33,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:33,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168507404] [2020-11-28 07:42:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:33,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168507404] [2020-11-28 07:42:33,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:33,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:33,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548772301] [2020-11-28 07:42:33,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:33,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:33,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:33,800 INFO L87 Difference]: Start difference. First operand 393 states and 576 transitions. Second operand 3 states. [2020-11-28 07:42:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:33,977 INFO L93 Difference]: Finished difference Result 820 states and 1200 transitions. [2020-11-28 07:42:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:33,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-28 07:42:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:33,980 INFO L225 Difference]: With dead ends: 820 [2020-11-28 07:42:33,981 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:42:33,982 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 [2020-11-28 07:42:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:42:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:42:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:42:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2020-11-28 07:42:34,007 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 56 [2020-11-28 07:42:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:34,008 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2020-11-28 07:42:34,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2020-11-28 07:42:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 07:42:34,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:34,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:34,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:42:34,010 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 142073737, now seen corresponding path program 1 times [2020-11-28 07:42:34,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:34,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606029327] [2020-11-28 07:42:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:34,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606029327] [2020-11-28 07:42:34,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:34,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:34,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412730621] [2020-11-28 07:42:34,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:34,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:34,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:34,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:34,060 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand 3 states. [2020-11-28 07:42:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:34,250 INFO L93 Difference]: Finished difference Result 901 states and 1307 transitions. [2020-11-28 07:42:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:34,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-28 07:42:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:34,254 INFO L225 Difference]: With dead ends: 901 [2020-11-28 07:42:34,254 INFO L226 Difference]: Without dead ends: 474 [2020-11-28 07:42:34,255 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 [2020-11-28 07:42:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-11-28 07:42:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2020-11-28 07:42:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-11-28 07:42:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 679 transitions. [2020-11-28 07:42:34,283 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 679 transitions. Word has length 68 [2020-11-28 07:42:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:34,283 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 679 transitions. [2020-11-28 07:42:34,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 679 transitions. [2020-11-28 07:42:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-28 07:42:34,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:34,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:34,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:42:34,285 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:34,285 INFO L82 PathProgramCache]: Analyzing trace with hash -406283111, now seen corresponding path program 1 times [2020-11-28 07:42:34,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:34,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241029786] [2020-11-28 07:42:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:34,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241029786] [2020-11-28 07:42:34,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:34,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:34,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941262912] [2020-11-28 07:42:34,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:34,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:34,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:34,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:34,325 INFO L87 Difference]: Start difference. First operand 470 states and 679 transitions. Second operand 3 states. [2020-11-28 07:42:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:34,527 INFO L93 Difference]: Finished difference Result 940 states and 1358 transitions. [2020-11-28 07:42:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:34,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-11-28 07:42:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:34,531 INFO L225 Difference]: With dead ends: 940 [2020-11-28 07:42:34,531 INFO L226 Difference]: Without dead ends: 472 [2020-11-28 07:42:34,532 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 [2020-11-28 07:42:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-28 07:42:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2020-11-28 07:42:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-11-28 07:42:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 676 transitions. [2020-11-28 07:42:34,559 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 676 transitions. Word has length 69 [2020-11-28 07:42:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:34,559 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 676 transitions. [2020-11-28 07:42:34,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 676 transitions. [2020-11-28 07:42:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-28 07:42:34,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:34,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:34,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 07:42:34,567 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:34,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:34,567 INFO L82 PathProgramCache]: Analyzing trace with hash 866625324, now seen corresponding path program 1 times [2020-11-28 07:42:34,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:34,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598737227] [2020-11-28 07:42:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-28 07:42:34,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598737227] [2020-11-28 07:42:34,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:34,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:34,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821722203] [2020-11-28 07:42:34,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:34,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:34,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:34,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:34,608 INFO L87 Difference]: Start difference. First operand 470 states and 676 transitions. Second operand 3 states. [2020-11-28 07:42:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:34,774 INFO L93 Difference]: Finished difference Result 968 states and 1390 transitions. [2020-11-28 07:42:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:34,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-11-28 07:42:34,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:34,777 INFO L225 Difference]: With dead ends: 968 [2020-11-28 07:42:34,778 INFO L226 Difference]: Without dead ends: 500 [2020-11-28 07:42:34,779 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 [2020-11-28 07:42:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-28 07:42:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2020-11-28 07:42:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-28 07:42:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 705 transitions. [2020-11-28 07:42:34,809 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 705 transitions. Word has length 73 [2020-11-28 07:42:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:34,810 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 705 transitions. [2020-11-28 07:42:34,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 705 transitions. [2020-11-28 07:42:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-28 07:42:34,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:34,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:34,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 07:42:34,812 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1555670815, now seen corresponding path program 1 times [2020-11-28 07:42:34,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:34,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539435110] [2020-11-28 07:42:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-28 07:42:34,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539435110] [2020-11-28 07:42:34,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:34,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:34,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024769085] [2020-11-28 07:42:34,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:34,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:34,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:34,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:34,846 INFO L87 Difference]: Start difference. First operand 496 states and 705 transitions. Second operand 3 states. [2020-11-28 07:42:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:35,031 INFO L93 Difference]: Finished difference Result 992 states and 1410 transitions. [2020-11-28 07:42:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:35,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-11-28 07:42:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:35,034 INFO L225 Difference]: With dead ends: 992 [2020-11-28 07:42:35,035 INFO L226 Difference]: Without dead ends: 498 [2020-11-28 07:42:35,036 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 [2020-11-28 07:42:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-11-28 07:42:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2020-11-28 07:42:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-28 07:42:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 698 transitions. [2020-11-28 07:42:35,070 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 698 transitions. Word has length 74 [2020-11-28 07:42:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:35,071 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 698 transitions. [2020-11-28 07:42:35,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 698 transitions. [2020-11-28 07:42:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-28 07:42:35,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:35,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:35,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 07:42:35,073 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:35,074 INFO L82 PathProgramCache]: Analyzing trace with hash -104816172, now seen corresponding path program 1 times [2020-11-28 07:42:35,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:35,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307827990] [2020-11-28 07:42:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-28 07:42:35,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307827990] [2020-11-28 07:42:35,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:35,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:35,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676442866] [2020-11-28 07:42:35,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:35,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:35,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:35,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:35,108 INFO L87 Difference]: Start difference. First operand 496 states and 698 transitions. Second operand 3 states. [2020-11-28 07:42:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:35,294 INFO L93 Difference]: Finished difference Result 1028 states and 1442 transitions. [2020-11-28 07:42:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:35,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-11-28 07:42:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:35,299 INFO L225 Difference]: With dead ends: 1028 [2020-11-28 07:42:35,299 INFO L226 Difference]: Without dead ends: 534 [2020-11-28 07:42:35,302 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 [2020-11-28 07:42:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-11-28 07:42:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2020-11-28 07:42:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-11-28 07:42:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 737 transitions. [2020-11-28 07:42:35,334 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 737 transitions. Word has length 82 [2020-11-28 07:42:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:35,334 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 737 transitions. [2020-11-28 07:42:35,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 737 transitions. [2020-11-28 07:42:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 07:42:35,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:35,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:35,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 07:42:35,336 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:35,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:35,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2126670143, now seen corresponding path program 1 times [2020-11-28 07:42:35,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:35,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227156733] [2020-11-28 07:42:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-28 07:42:35,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227156733] [2020-11-28 07:42:35,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:35,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:35,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612119846] [2020-11-28 07:42:35,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:35,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:35,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:35,378 INFO L87 Difference]: Start difference. First operand 530 states and 737 transitions. Second operand 3 states. [2020-11-28 07:42:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:35,559 INFO L93 Difference]: Finished difference Result 1060 states and 1474 transitions. [2020-11-28 07:42:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:35,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-28 07:42:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:35,562 INFO L225 Difference]: With dead ends: 1060 [2020-11-28 07:42:35,563 INFO L226 Difference]: Without dead ends: 532 [2020-11-28 07:42:35,564 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 [2020-11-28 07:42:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-11-28 07:42:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2020-11-28 07:42:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-11-28 07:42:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 732 transitions. [2020-11-28 07:42:35,594 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 732 transitions. Word has length 83 [2020-11-28 07:42:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:35,595 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 732 transitions. [2020-11-28 07:42:35,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 732 transitions. [2020-11-28 07:42:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-28 07:42:35,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:35,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:35,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-28 07:42:35,597 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash -97967580, now seen corresponding path program 1 times [2020-11-28 07:42:35,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:35,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398851487] [2020-11-28 07:42:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:35,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:35,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:35,748 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:42:35,748 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:35,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-28 07:42:35,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:35 BoogieIcfgContainer [2020-11-28 07:42:35,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:35,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:35,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:35,884 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:35,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:28" (3/4) ... [2020-11-28 07:42:35,888 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:42:35,990 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8542fd8e-5d40-4f2d-8d3e-f0899179f75b/bin/utaipan/witness.graphml [2020-11-28 07:42:35,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:35,992 INFO L168 Benchmark]: Toolchain (without parser) took 9444.54 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 62.7 MB in the beginning and 108.4 MB in the end (delta: -45.8 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,993 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:35,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.13 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 69.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.79 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 66.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,994 INFO L168 Benchmark]: Boogie Preprocessor took 50.26 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,995 INFO L168 Benchmark]: RCFGBuilder took 1615.31 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.7 MB in the beginning and 92.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,995 INFO L168 Benchmark]: TraceAbstraction took 7084.88 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 91.3 MB in the beginning and 120.0 MB in the end (delta: -28.7 MB). Peak memory consumption was 61.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,996 INFO L168 Benchmark]: Witness Printer took 106.70 ms. Allocated memory is still 207.6 MB. Free memory was 120.0 MB in the beginning and 108.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:35,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 501.13 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 69.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.79 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 66.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.26 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1615.31 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.7 MB in the beginning and 92.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7084.88 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 91.3 MB in the beginning and 120.0 MB in the end (delta: -28.7 MB). Peak memory consumption was 61.1 MB. Max. memory is 16.1 GB. * Witness Printer took 106.70 ms. Allocated memory is still 207.6 MB. Free memory was 120.0 MB in the beginning and 108.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND FALSE !(s__info_callback != 0) [L85] COND FALSE !(s__ctx__info_callback != 0) [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L3] __assert_fail("0", "s3_srvr_13.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.8s, OverallIterations: 24, TraceHistogramMax: 4, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2461 SDtfs, 3105 SDslu, 525 SDs, 0 SdLazy, 2013 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 152 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 108490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 352/352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...