./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.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_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/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 8822f5291178e45ba1da62c4d4636880280d6cc4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:44:41,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:41,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:41,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:41,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:41,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:41,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:41,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:41,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:41,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:41,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:41,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:41,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:41,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:41,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:41,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:41,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:41,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:41,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:41,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:41,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:41,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:41,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:41,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:41,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:41,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:41,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:41,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:41,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:41,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:41,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:41,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:41,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:41,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:41,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:41,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:41,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:41,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:41,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:41,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:41,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:41,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:44:41,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:41,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:41,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:41,368 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:41,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:41,368 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:41,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:44:41,369 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:41,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:41,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:44:41,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:44:41,371 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:41,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:44:41,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:44:41,371 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:44:41,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:41,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:41,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:44:41,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:41,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:41,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:41,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:41,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:41,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:41,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:41,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:41,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:41,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:41,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:41,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:41,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:41,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:41,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:41,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:41,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:41,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:44:41,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:44:41,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:41,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:41,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:41,380 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_6fa0af55-c7e8-4fde-8568-7efdf400b808/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8822f5291178e45ba1da62c4d4636880280d6cc4 [2020-11-28 07:44:41,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:41,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:41,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:41,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:41,662 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:41,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2020-11-28 07:44:41,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/data/6bdf72ba4/9970fac6beae42c69c8c412bca505fed/FLAGaa0ea430f [2020-11-28 07:44:42,239 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:42,240 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2020-11-28 07:44:42,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/data/6bdf72ba4/9970fac6beae42c69c8c412bca505fed/FLAGaa0ea430f [2020-11-28 07:44:42,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/data/6bdf72ba4/9970fac6beae42c69c8c412bca505fed [2020-11-28 07:44:42,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:42,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:42,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:42,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:42,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:42,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:42" (1/1) ... [2020-11-28 07:44:42,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25eb70f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:42, skipping insertion in model container [2020-11-28 07:44:42,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:42" (1/1) ... [2020-11-28 07:44:42,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:42,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:42,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:43,004 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:43,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:43,093 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:43,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43 WrapperNode [2020-11-28 07:44:43,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:43,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:43,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:43,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:43,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:43,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:43,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:43,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:43,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... [2020-11-28 07:44:43,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:43,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:43,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:43,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:43,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/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 07:44:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:44:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:43,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:43,561 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 07:44:44,491 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-28 07:44:44,492 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-28 07:44:44,989 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:44,989 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:44:44,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:44 BoogieIcfgContainer [2020-11-28 07:44:44,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:44,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:44,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:45,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:45,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:42" (1/3) ... [2020-11-28 07:44:45,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0b4c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:45, skipping insertion in model container [2020-11-28 07:44:45,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:43" (2/3) ... [2020-11-28 07:44:45,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0b4c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:45, skipping insertion in model container [2020-11-28 07:44:45,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:44" (3/3) ... [2020-11-28 07:44:45,004 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-11-28 07:44:45,017 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:45,022 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:45,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:45,062 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:45,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:45,062 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:45,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:45,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:45,062 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:45,062 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:45,063 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-11-28 07:44:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:44:45,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:45,090 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 07:44:45,091 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:45,097 INFO L82 PathProgramCache]: Analyzing trace with hash 67804971, now seen corresponding path program 1 times [2020-11-28 07:44:45,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:45,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288252262] [2020-11-28 07:44:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:45,286 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 07:44:45,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288252262] [2020-11-28 07:44:45,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:45,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:45,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107969755] [2020-11-28 07:44:45,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:45,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:45,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:45,310 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 3 states. [2020-11-28 07:44:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:45,560 INFO L93 Difference]: Finished difference Result 257 states and 449 transitions. [2020-11-28 07:44:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:45,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 07:44:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:45,580 INFO L225 Difference]: With dead ends: 257 [2020-11-28 07:44:45,580 INFO L226 Difference]: Without dead ends: 134 [2020-11-28 07:44:45,584 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 07:44:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-28 07:44:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-28 07:44:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-28 07:44:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 204 transitions. [2020-11-28 07:44:45,632 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 204 transitions. Word has length 21 [2020-11-28 07:44:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:45,632 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 204 transitions. [2020-11-28 07:44:45,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 204 transitions. [2020-11-28 07:44:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:44:45,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:45,635 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 07:44:45,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:44:45,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:45,638 INFO L82 PathProgramCache]: Analyzing trace with hash -851801969, now seen corresponding path program 1 times [2020-11-28 07:44:45,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:45,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188738017] [2020-11-28 07:44:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:45,756 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 07:44:45,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188738017] [2020-11-28 07:44:45,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:45,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:45,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706685836] [2020-11-28 07:44:45,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:45,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:45,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:45,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:45,759 INFO L87 Difference]: Start difference. First operand 134 states and 204 transitions. Second operand 3 states. [2020-11-28 07:44:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:45,935 INFO L93 Difference]: Finished difference Result 275 states and 417 transitions. [2020-11-28 07:44:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:45,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 07:44:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:45,937 INFO L225 Difference]: With dead ends: 275 [2020-11-28 07:44:45,937 INFO L226 Difference]: Without dead ends: 143 [2020-11-28 07:44:45,939 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 07:44:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-28 07:44:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2020-11-28 07:44:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-28 07:44:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 205 transitions. [2020-11-28 07:44:45,961 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 205 transitions. Word has length 23 [2020-11-28 07:44:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:45,961 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 205 transitions. [2020-11-28 07:44:45,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 205 transitions. [2020-11-28 07:44:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:44:45,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:45,963 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 07:44:45,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:44:45,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:45,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1079430145, now seen corresponding path program 1 times [2020-11-28 07:44:45,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:45,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084252221] [2020-11-28 07:44:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:46,063 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 07:44:46,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084252221] [2020-11-28 07:44:46,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:46,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:46,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684554815] [2020-11-28 07:44:46,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:46,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:46,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:46,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:46,065 INFO L87 Difference]: Start difference. First operand 135 states and 205 transitions. Second operand 3 states. [2020-11-28 07:44:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:46,261 INFO L93 Difference]: Finished difference Result 286 states and 435 transitions. [2020-11-28 07:44:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:46,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 07:44:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:46,264 INFO L225 Difference]: With dead ends: 286 [2020-11-28 07:44:46,264 INFO L226 Difference]: Without dead ends: 153 [2020-11-28 07:44:46,265 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 07:44:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-28 07:44:46,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2020-11-28 07:44:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-28 07:44:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 229 transitions. [2020-11-28 07:44:46,283 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 229 transitions. Word has length 23 [2020-11-28 07:44:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:46,284 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 229 transitions. [2020-11-28 07:44:46,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 229 transitions. [2020-11-28 07:44:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:44:46,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:46,287 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 07:44:46,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:44:46,287 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1892251717, now seen corresponding path program 1 times [2020-11-28 07:44:46,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:46,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745306016] [2020-11-28 07:44:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:46,368 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 07:44:46,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745306016] [2020-11-28 07:44:46,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:46,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:46,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89910363] [2020-11-28 07:44:46,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:46,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:46,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:46,371 INFO L87 Difference]: Start difference. First operand 151 states and 229 transitions. Second operand 3 states. [2020-11-28 07:44:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:46,577 INFO L93 Difference]: Finished difference Result 306 states and 468 transitions. [2020-11-28 07:44:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:46,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 07:44:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:46,579 INFO L225 Difference]: With dead ends: 306 [2020-11-28 07:44:46,579 INFO L226 Difference]: Without dead ends: 157 [2020-11-28 07:44:46,580 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 07:44:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-28 07:44:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-11-28 07:44:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 07:44:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 240 transitions. [2020-11-28 07:44:46,597 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 240 transitions. Word has length 23 [2020-11-28 07:44:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:46,597 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 240 transitions. [2020-11-28 07:44:46,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 240 transitions. [2020-11-28 07:44:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:44:46,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:46,600 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 07:44:46,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:44:46,601 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:46,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1821207586, now seen corresponding path program 1 times [2020-11-28 07:44:46,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:46,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964064720] [2020-11-28 07:44:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:46,669 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 07:44:46,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964064720] [2020-11-28 07:44:46,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:46,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:46,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439777631] [2020-11-28 07:44:46,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:46,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:46,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:46,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:46,671 INFO L87 Difference]: Start difference. First operand 157 states and 240 transitions. Second operand 3 states. [2020-11-28 07:44:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:46,864 INFO L93 Difference]: Finished difference Result 320 states and 487 transitions. [2020-11-28 07:44:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:46,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 07:44:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:46,866 INFO L225 Difference]: With dead ends: 320 [2020-11-28 07:44:46,866 INFO L226 Difference]: Without dead ends: 165 [2020-11-28 07:44:46,867 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 07:44:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-28 07:44:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-11-28 07:44:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 07:44:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 238 transitions. [2020-11-28 07:44:46,879 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 238 transitions. Word has length 24 [2020-11-28 07:44:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:46,880 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 238 transitions. [2020-11-28 07:44:46,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 238 transitions. [2020-11-28 07:44:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:44:46,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:46,881 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 07:44:46,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:44:46,882 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:46,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1928779988, now seen corresponding path program 1 times [2020-11-28 07:44:46,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:46,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636945086] [2020-11-28 07:44:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:46,922 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 07:44:46,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636945086] [2020-11-28 07:44:46,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:46,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:46,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131239428] [2020-11-28 07:44:46,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:46,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:46,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:46,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:46,925 INFO L87 Difference]: Start difference. First operand 157 states and 238 transitions. Second operand 3 states. [2020-11-28 07:44:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:47,101 INFO L93 Difference]: Finished difference Result 314 states and 476 transitions. [2020-11-28 07:44:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:47,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 07:44:47,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:47,102 INFO L225 Difference]: With dead ends: 314 [2020-11-28 07:44:47,102 INFO L226 Difference]: Without dead ends: 159 [2020-11-28 07:44:47,103 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 07:44:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-28 07:44:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-11-28 07:44:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 07:44:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 237 transitions. [2020-11-28 07:44:47,123 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 237 transitions. Word has length 24 [2020-11-28 07:44:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:47,125 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 237 transitions. [2020-11-28 07:44:47,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 237 transitions. [2020-11-28 07:44:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:44:47,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:47,127 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] [2020-11-28 07:44:47,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:44:47,127 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1142234188, now seen corresponding path program 1 times [2020-11-28 07:44:47,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:47,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917958668] [2020-11-28 07:44:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:47,174 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 07:44:47,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917958668] [2020-11-28 07:44:47,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:47,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:47,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52722600] [2020-11-28 07:44:47,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:47,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:47,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:47,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:47,176 INFO L87 Difference]: Start difference. First operand 157 states and 237 transitions. Second operand 3 states. [2020-11-28 07:44:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:47,336 INFO L93 Difference]: Finished difference Result 320 states and 481 transitions. [2020-11-28 07:44:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:47,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 07:44:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:47,338 INFO L225 Difference]: With dead ends: 320 [2020-11-28 07:44:47,338 INFO L226 Difference]: Without dead ends: 165 [2020-11-28 07:44:47,338 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 07:44:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-28 07:44:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-11-28 07:44:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 07:44:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 235 transitions. [2020-11-28 07:44:47,361 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 235 transitions. Word has length 25 [2020-11-28 07:44:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:47,361 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 235 transitions. [2020-11-28 07:44:47,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 235 transitions. [2020-11-28 07:44:47,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 07:44:47,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:47,370 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] [2020-11-28 07:44:47,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:44:47,370 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:47,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1552959271, now seen corresponding path program 1 times [2020-11-28 07:44:47,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:47,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454988361] [2020-11-28 07:44:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:47,421 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 07:44:47,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454988361] [2020-11-28 07:44:47,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:47,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:47,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563423487] [2020-11-28 07:44:47,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:47,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:47,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:47,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:47,423 INFO L87 Difference]: Start difference. First operand 157 states and 235 transitions. Second operand 3 states. [2020-11-28 07:44:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:47,587 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2020-11-28 07:44:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:47,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-28 07:44:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:47,589 INFO L225 Difference]: With dead ends: 320 [2020-11-28 07:44:47,589 INFO L226 Difference]: Without dead ends: 165 [2020-11-28 07:44:47,589 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 07:44:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-28 07:44:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-11-28 07:44:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 07:44:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 233 transitions. [2020-11-28 07:44:47,600 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 233 transitions. Word has length 26 [2020-11-28 07:44:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:47,601 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 233 transitions. [2020-11-28 07:44:47,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 233 transitions. [2020-11-28 07:44:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 07:44:47,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:47,602 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] [2020-11-28 07:44:47,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:44:47,602 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:47,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1810180417, now seen corresponding path program 1 times [2020-11-28 07:44:47,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:47,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072024656] [2020-11-28 07:44:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:47,654 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 07:44:47,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072024656] [2020-11-28 07:44:47,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:47,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:47,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21217257] [2020-11-28 07:44:47,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:47,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:47,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:47,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:47,656 INFO L87 Difference]: Start difference. First operand 157 states and 233 transitions. Second operand 4 states. [2020-11-28 07:44:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:47,975 INFO L93 Difference]: Finished difference Result 446 states and 659 transitions. [2020-11-28 07:44:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:44:47,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-28 07:44:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:47,977 INFO L225 Difference]: With dead ends: 446 [2020-11-28 07:44:47,977 INFO L226 Difference]: Without dead ends: 291 [2020-11-28 07:44:47,978 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 07:44:47,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-28 07:44:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 267. [2020-11-28 07:44:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-11-28 07:44:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 397 transitions. [2020-11-28 07:44:47,998 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 397 transitions. Word has length 26 [2020-11-28 07:44:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:48,003 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 397 transitions. [2020-11-28 07:44:48,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 397 transitions. [2020-11-28 07:44:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 07:44:48,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:48,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:48,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:44:48,008 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:48,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:48,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1633663458, now seen corresponding path program 1 times [2020-11-28 07:44:48,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:48,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854894176] [2020-11-28 07:44:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:48,057 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 07:44:48,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854894176] [2020-11-28 07:44:48,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:48,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:48,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963221018] [2020-11-28 07:44:48,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:48,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:48,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:48,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:48,059 INFO L87 Difference]: Start difference. First operand 267 states and 397 transitions. Second operand 3 states. [2020-11-28 07:44:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:48,304 INFO L93 Difference]: Finished difference Result 612 states and 929 transitions. [2020-11-28 07:44:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:48,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-28 07:44:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:48,307 INFO L225 Difference]: With dead ends: 612 [2020-11-28 07:44:48,307 INFO L226 Difference]: Without dead ends: 347 [2020-11-28 07:44:48,308 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 07:44:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-11-28 07:44:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 331. [2020-11-28 07:44:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-11-28 07:44:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 507 transitions. [2020-11-28 07:44:48,331 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 507 transitions. Word has length 39 [2020-11-28 07:44:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:48,332 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 507 transitions. [2020-11-28 07:44:48,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 507 transitions. [2020-11-28 07:44:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 07:44:48,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:48,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:48,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:44:48,335 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash 949334000, now seen corresponding path program 1 times [2020-11-28 07:44:48,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:48,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298339546] [2020-11-28 07:44:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:48,387 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 07:44:48,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298339546] [2020-11-28 07:44:48,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:48,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:48,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011693559] [2020-11-28 07:44:48,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:48,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:48,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:48,390 INFO L87 Difference]: Start difference. First operand 331 states and 507 transitions. Second operand 3 states. [2020-11-28 07:44:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:48,637 INFO L93 Difference]: Finished difference Result 670 states and 1027 transitions. [2020-11-28 07:44:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:48,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-28 07:44:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:48,640 INFO L225 Difference]: With dead ends: 670 [2020-11-28 07:44:48,640 INFO L226 Difference]: Without dead ends: 341 [2020-11-28 07:44:48,641 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 07:44:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-28 07:44:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 332. [2020-11-28 07:44:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-11-28 07:44:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 507 transitions. [2020-11-28 07:44:48,663 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 507 transitions. Word has length 40 [2020-11-28 07:44:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:48,665 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 507 transitions. [2020-11-28 07:44:48,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 507 transitions. [2020-11-28 07:44:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 07:44:48,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:48,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:48,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:44:48,669 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1058803859, now seen corresponding path program 1 times [2020-11-28 07:44:48,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:48,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006987716] [2020-11-28 07:44:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:44:48,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006987716] [2020-11-28 07:44:48,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:48,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:48,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215093306] [2020-11-28 07:44:48,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:48,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:48,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:48,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:48,711 INFO L87 Difference]: Start difference. First operand 332 states and 507 transitions. Second operand 3 states. [2020-11-28 07:44:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:48,926 INFO L93 Difference]: Finished difference Result 710 states and 1087 transitions. [2020-11-28 07:44:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:48,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-11-28 07:44:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:48,929 INFO L225 Difference]: With dead ends: 710 [2020-11-28 07:44:48,929 INFO L226 Difference]: Without dead ends: 380 [2020-11-28 07:44:48,930 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 07:44:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-11-28 07:44:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 364. [2020-11-28 07:44:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-11-28 07:44:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 553 transitions. [2020-11-28 07:44:48,959 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 553 transitions. Word has length 49 [2020-11-28 07:44:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:48,960 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 553 transitions. [2020-11-28 07:44:48,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 553 transitions. [2020-11-28 07:44:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 07:44:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:48,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:48,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:44:48,962 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1693285364, now seen corresponding path program 1 times [2020-11-28 07:44:48,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:48,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632970155] [2020-11-28 07:44:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:44:49,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632970155] [2020-11-28 07:44:49,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:49,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:49,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353909161] [2020-11-28 07:44:49,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:49,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:49,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:49,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:49,025 INFO L87 Difference]: Start difference. First operand 364 states and 553 transitions. Second operand 3 states. [2020-11-28 07:44:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:49,275 INFO L93 Difference]: Finished difference Result 791 states and 1210 transitions. [2020-11-28 07:44:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:49,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-11-28 07:44:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:49,279 INFO L225 Difference]: With dead ends: 791 [2020-11-28 07:44:49,279 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:44:49,280 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 07:44:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:44:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2020-11-28 07:44:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-28 07:44:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 649 transitions. [2020-11-28 07:44:49,301 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 649 transitions. Word has length 49 [2020-11-28 07:44:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:49,302 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 649 transitions. [2020-11-28 07:44:49,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 649 transitions. [2020-11-28 07:44:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-28 07:44:49,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:49,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:49,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:44:49,304 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash 676092453, now seen corresponding path program 1 times [2020-11-28 07:44:49,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:49,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408676748] [2020-11-28 07:44:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:44:49,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408676748] [2020-11-28 07:44:49,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:49,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:49,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085560880] [2020-11-28 07:44:49,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:49,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:49,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:49,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:49,379 INFO L87 Difference]: Start difference. First operand 427 states and 649 transitions. Second operand 3 states. [2020-11-28 07:44:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:49,626 INFO L93 Difference]: Finished difference Result 860 states and 1309 transitions. [2020-11-28 07:44:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:49,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-11-28 07:44:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:49,630 INFO L225 Difference]: With dead ends: 860 [2020-11-28 07:44:49,630 INFO L226 Difference]: Without dead ends: 435 [2020-11-28 07:44:49,631 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 07:44:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-11-28 07:44:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 427. [2020-11-28 07:44:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-28 07:44:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 645 transitions. [2020-11-28 07:44:49,655 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 645 transitions. Word has length 61 [2020-11-28 07:44:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:49,655 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 645 transitions. [2020-11-28 07:44:49,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 645 transitions. [2020-11-28 07:44:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-28 07:44:49,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:49,657 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, 1, 1, 1, 1] [2020-11-28 07:44:49,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:44:49,657 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:49,657 INFO L82 PathProgramCache]: Analyzing trace with hash 936732041, now seen corresponding path program 1 times [2020-11-28 07:44:49,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:49,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033746007] [2020-11-28 07:44:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:49,692 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 07:44:49,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033746007] [2020-11-28 07:44:49,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:49,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:49,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346651237] [2020-11-28 07:44:49,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:49,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:49,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:49,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:49,694 INFO L87 Difference]: Start difference. First operand 427 states and 645 transitions. Second operand 3 states. [2020-11-28 07:44:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:49,933 INFO L93 Difference]: Finished difference Result 897 states and 1354 transitions. [2020-11-28 07:44:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:49,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-11-28 07:44:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:49,937 INFO L225 Difference]: With dead ends: 897 [2020-11-28 07:44:49,937 INFO L226 Difference]: Without dead ends: 472 [2020-11-28 07:44:49,938 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 07:44:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-28 07:44:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 468. [2020-11-28 07:44:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-28 07:44:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 704 transitions. [2020-11-28 07:44:49,970 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 704 transitions. Word has length 72 [2020-11-28 07:44:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:49,971 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 704 transitions. [2020-11-28 07:44:49,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 704 transitions. [2020-11-28 07:44:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-28 07:44:49,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:49,973 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, 1, 1, 1, 1] [2020-11-28 07:44:49,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:44:49,973 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:49,974 INFO L82 PathProgramCache]: Analyzing trace with hash -715650917, now seen corresponding path program 1 times [2020-11-28 07:44:49,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:49,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122642242] [2020-11-28 07:44:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:50,024 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 07:44:50,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122642242] [2020-11-28 07:44:50,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:50,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:50,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523825810] [2020-11-28 07:44:50,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:50,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:50,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:50,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:50,027 INFO L87 Difference]: Start difference. First operand 468 states and 704 transitions. Second operand 3 states. [2020-11-28 07:44:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:50,260 INFO L93 Difference]: Finished difference Result 936 states and 1408 transitions. [2020-11-28 07:44:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:50,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-11-28 07:44:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:50,264 INFO L225 Difference]: With dead ends: 936 [2020-11-28 07:44:50,264 INFO L226 Difference]: Without dead ends: 470 [2020-11-28 07:44:50,265 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 07:44:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-11-28 07:44:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2020-11-28 07:44:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-28 07:44:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 701 transitions. [2020-11-28 07:44:50,287 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 701 transitions. Word has length 73 [2020-11-28 07:44:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:50,287 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 701 transitions. [2020-11-28 07:44:50,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 701 transitions. [2020-11-28 07:44:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:44:50,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:50,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:50,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:44:50,290 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:50,290 INFO L82 PathProgramCache]: Analyzing trace with hash -659279724, now seen corresponding path program 1 times [2020-11-28 07:44:50,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:50,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373488083] [2020-11-28 07:44:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-28 07:44:50,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373488083] [2020-11-28 07:44:50,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:50,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:50,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840807138] [2020-11-28 07:44:50,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:50,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:50,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:50,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:50,325 INFO L87 Difference]: Start difference. First operand 468 states and 701 transitions. Second operand 3 states. [2020-11-28 07:44:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:50,552 INFO L93 Difference]: Finished difference Result 934 states and 1400 transitions. [2020-11-28 07:44:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:50,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-28 07:44:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:50,556 INFO L225 Difference]: With dead ends: 934 [2020-11-28 07:44:50,556 INFO L226 Difference]: Without dead ends: 468 [2020-11-28 07:44:50,557 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 07:44:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-11-28 07:44:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2020-11-28 07:44:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-11-28 07:44:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 694 transitions. [2020-11-28 07:44:50,586 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 694 transitions. Word has length 78 [2020-11-28 07:44:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:50,587 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 694 transitions. [2020-11-28 07:44:50,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 694 transitions. [2020-11-28 07:44:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 07:44:50,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:50,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:50,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:44:50,590 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash 360300028, now seen corresponding path program 1 times [2020-11-28 07:44:50,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:50,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630364140] [2020-11-28 07:44:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 07:44:50,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630364140] [2020-11-28 07:44:50,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:50,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:50,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010915102] [2020-11-28 07:44:50,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:50,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:50,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:50,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:50,635 INFO L87 Difference]: Start difference. First operand 466 states and 694 transitions. Second operand 3 states. [2020-11-28 07:44:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:50,831 INFO L93 Difference]: Finished difference Result 980 states and 1462 transitions. [2020-11-28 07:44:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:50,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 07:44:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:50,834 INFO L225 Difference]: With dead ends: 980 [2020-11-28 07:44:50,835 INFO L226 Difference]: Without dead ends: 516 [2020-11-28 07:44:50,836 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 07:44:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-11-28 07:44:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 496. [2020-11-28 07:44:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-28 07:44:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 732 transitions. [2020-11-28 07:44:50,858 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 732 transitions. Word has length 85 [2020-11-28 07:44:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:50,858 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 732 transitions. [2020-11-28 07:44:50,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 732 transitions. [2020-11-28 07:44:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-28 07:44:50,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:50,861 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, 1, 1, 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 07:44:50,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:44:50,862 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:50,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash -988219729, now seen corresponding path program 1 times [2020-11-28 07:44:50,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:50,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297376129] [2020-11-28 07:44:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 07:44:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297376129] [2020-11-28 07:44:50,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:50,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:50,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457717939] [2020-11-28 07:44:50,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:50,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:50,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:50,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:50,920 INFO L87 Difference]: Start difference. First operand 496 states and 732 transitions. Second operand 3 states. [2020-11-28 07:44:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:51,119 INFO L93 Difference]: Finished difference Result 1000 states and 1478 transitions. [2020-11-28 07:44:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:51,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-28 07:44:51,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:51,122 INFO L225 Difference]: With dead ends: 1000 [2020-11-28 07:44:51,122 INFO L226 Difference]: Without dead ends: 506 [2020-11-28 07:44:51,126 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 07:44:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-11-28 07:44:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 496. [2020-11-28 07:44:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-28 07:44:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 726 transitions. [2020-11-28 07:44:51,152 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 726 transitions. Word has length 86 [2020-11-28 07:44:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:51,152 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 726 transitions. [2020-11-28 07:44:51,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 726 transitions. [2020-11-28 07:44:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-28 07:44:51,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:51,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:51,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 07:44:51,154 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:51,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:51,155 INFO L82 PathProgramCache]: Analyzing trace with hash -79895851, now seen corresponding path program 1 times [2020-11-28 07:44:51,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:51,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491062761] [2020-11-28 07:44:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-28 07:44:51,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491062761] [2020-11-28 07:44:51,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:51,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:51,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239719621] [2020-11-28 07:44:51,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:51,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:51,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:51,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:51,200 INFO L87 Difference]: Start difference. First operand 496 states and 726 transitions. Second operand 3 states. [2020-11-28 07:44:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:51,477 INFO L93 Difference]: Finished difference Result 1044 states and 1527 transitions. [2020-11-28 07:44:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:51,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-11-28 07:44:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:51,481 INFO L225 Difference]: With dead ends: 1044 [2020-11-28 07:44:51,482 INFO L226 Difference]: Without dead ends: 550 [2020-11-28 07:44:51,483 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 07:44:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-11-28 07:44:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2020-11-28 07:44:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-11-28 07:44:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 797 transitions. [2020-11-28 07:44:51,515 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 797 transitions. Word has length 90 [2020-11-28 07:44:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:51,515 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 797 transitions. [2020-11-28 07:44:51,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 797 transitions. [2020-11-28 07:44:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:44:51,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:51,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:51,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 07:44:51,518 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1319991481, now seen corresponding path program 1 times [2020-11-28 07:44:51,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:51,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263187562] [2020-11-28 07:44:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-28 07:44:51,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263187562] [2020-11-28 07:44:51,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:51,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308467489] [2020-11-28 07:44:51,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:51,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:51,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:51,565 INFO L87 Difference]: Start difference. First operand 546 states and 797 transitions. Second operand 3 states. [2020-11-28 07:44:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:51,814 INFO L93 Difference]: Finished difference Result 1093 states and 1595 transitions. [2020-11-28 07:44:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:51,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:44:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:51,817 INFO L225 Difference]: With dead ends: 1093 [2020-11-28 07:44:51,818 INFO L226 Difference]: Without dead ends: 545 [2020-11-28 07:44:51,819 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 07:44:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-11-28 07:44:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 543. [2020-11-28 07:44:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-11-28 07:44:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 791 transitions. [2020-11-28 07:44:51,844 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 791 transitions. Word has length 91 [2020-11-28 07:44:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:51,845 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 791 transitions. [2020-11-28 07:44:51,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 791 transitions. [2020-11-28 07:44:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:44:51,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:51,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 07:44:51,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 07:44:51,847 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1350920032, now seen corresponding path program 1 times [2020-11-28 07:44:51,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:51,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666469926] [2020-11-28 07:44:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-11-28 07:44:51,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666469926] [2020-11-28 07:44:51,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:51,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:51,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268041014] [2020-11-28 07:44:51,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:51,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:51,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:51,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:51,910 INFO L87 Difference]: Start difference. First operand 543 states and 791 transitions. Second operand 3 states. [2020-11-28 07:44:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:52,132 INFO L93 Difference]: Finished difference Result 1127 states and 1639 transitions. [2020-11-28 07:44:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:52,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 07:44:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:52,137 INFO L225 Difference]: With dead ends: 1127 [2020-11-28 07:44:52,138 INFO L226 Difference]: Without dead ends: 586 [2020-11-28 07:44:52,140 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 07:44:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-11-28 07:44:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 582. [2020-11-28 07:44:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-11-28 07:44:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 841 transitions. [2020-11-28 07:44:52,168 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 841 transitions. Word has length 103 [2020-11-28 07:44:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:52,169 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 841 transitions. [2020-11-28 07:44:52,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 841 transitions. [2020-11-28 07:44:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 07:44:52,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:52,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:44:52,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 07:44:52,172 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1490264082, now seen corresponding path program 1 times [2020-11-28 07:44:52,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:52,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016122365] [2020-11-28 07:44:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-11-28 07:44:52,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016122365] [2020-11-28 07:44:52,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:52,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:52,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042367421] [2020-11-28 07:44:52,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:52,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:52,242 INFO L87 Difference]: Start difference. First operand 582 states and 841 transitions. Second operand 3 states. [2020-11-28 07:44:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:52,459 INFO L93 Difference]: Finished difference Result 1164 states and 1682 transitions. [2020-11-28 07:44:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:52,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 07:44:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:52,464 INFO L225 Difference]: With dead ends: 1164 [2020-11-28 07:44:52,464 INFO L226 Difference]: Without dead ends: 584 [2020-11-28 07:44:52,465 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 07:44:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-11-28 07:44:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2020-11-28 07:44:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-11-28 07:44:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 836 transitions. [2020-11-28 07:44:52,509 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 836 transitions. Word has length 104 [2020-11-28 07:44:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:52,509 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 836 transitions. [2020-11-28 07:44:52,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 836 transitions. [2020-11-28 07:44:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-28 07:44:52,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:52,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:52,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-28 07:44:52,512 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash -478278066, now seen corresponding path program 1 times [2020-11-28 07:44:52,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:52,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009601274] [2020-11-28 07:44:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-28 07:44:52,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009601274] [2020-11-28 07:44:52,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:52,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:52,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008116644] [2020-11-28 07:44:52,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:52,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:52,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:52,562 INFO L87 Difference]: Start difference. First operand 582 states and 836 transitions. Second operand 3 states. [2020-11-28 07:44:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:52,774 INFO L93 Difference]: Finished difference Result 1198 states and 1720 transitions. [2020-11-28 07:44:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:52,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-28 07:44:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:52,778 INFO L225 Difference]: With dead ends: 1198 [2020-11-28 07:44:52,778 INFO L226 Difference]: Without dead ends: 618 [2020-11-28 07:44:52,779 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 07:44:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-11-28 07:44:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 610. [2020-11-28 07:44:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-11-28 07:44:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 867 transitions. [2020-11-28 07:44:52,812 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 867 transitions. Word has length 106 [2020-11-28 07:44:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:52,812 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 867 transitions. [2020-11-28 07:44:52,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 867 transitions. [2020-11-28 07:44:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:44:52,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:52,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:52,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-28 07:44:52,815 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1420101659, now seen corresponding path program 1 times [2020-11-28 07:44:52,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:52,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729444026] [2020-11-28 07:44:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-28 07:44:52,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729444026] [2020-11-28 07:44:52,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:52,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:52,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769078965] [2020-11-28 07:44:52,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:52,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:52,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:52,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:52,852 INFO L87 Difference]: Start difference. First operand 610 states and 867 transitions. Second operand 3 states. [2020-11-28 07:44:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:53,065 INFO L93 Difference]: Finished difference Result 1222 states and 1737 transitions. [2020-11-28 07:44:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:53,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:44:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:53,069 INFO L225 Difference]: With dead ends: 1222 [2020-11-28 07:44:53,069 INFO L226 Difference]: Without dead ends: 614 [2020-11-28 07:44:53,070 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 07:44:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-11-28 07:44:53,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 610. [2020-11-28 07:44:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-11-28 07:44:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 858 transitions. [2020-11-28 07:44:53,103 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 858 transitions. Word has length 107 [2020-11-28 07:44:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:53,103 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 858 transitions. [2020-11-28 07:44:53,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 858 transitions. [2020-11-28 07:44:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-28 07:44:53,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:53,106 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:53,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-28 07:44:53,106 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:53,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1294479363, now seen corresponding path program 1 times [2020-11-28 07:44:53,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:53,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620833507] [2020-11-28 07:44:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-11-28 07:44:53,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620833507] [2020-11-28 07:44:53,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:53,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:53,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922924744] [2020-11-28 07:44:53,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:53,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:53,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:53,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:53,157 INFO L87 Difference]: Start difference. First operand 610 states and 858 transitions. Second operand 3 states. [2020-11-28 07:44:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:53,355 INFO L93 Difference]: Finished difference Result 1248 states and 1754 transitions. [2020-11-28 07:44:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:53,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-11-28 07:44:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:53,359 INFO L225 Difference]: With dead ends: 1248 [2020-11-28 07:44:53,359 INFO L226 Difference]: Without dead ends: 640 [2020-11-28 07:44:53,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-11-28 07:44:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2020-11-28 07:44:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-11-28 07:44:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 884 transitions. [2020-11-28 07:44:53,400 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 884 transitions. Word has length 124 [2020-11-28 07:44:53,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:53,400 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 884 transitions. [2020-11-28 07:44:53,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:53,400 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 884 transitions. [2020-11-28 07:44:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-28 07:44:53,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:53,403 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:53,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-28 07:44:53,403 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:53,404 INFO L82 PathProgramCache]: Analyzing trace with hash 740054320, now seen corresponding path program 1 times [2020-11-28 07:44:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:53,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007112003] [2020-11-28 07:44:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-11-28 07:44:53,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007112003] [2020-11-28 07:44:53,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:53,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:53,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729615837] [2020-11-28 07:44:53,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:53,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:53,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:53,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:53,455 INFO L87 Difference]: Start difference. First operand 636 states and 884 transitions. Second operand 3 states. [2020-11-28 07:44:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:53,659 INFO L93 Difference]: Finished difference Result 1272 states and 1768 transitions. [2020-11-28 07:44:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:53,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-28 07:44:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:53,663 INFO L225 Difference]: With dead ends: 1272 [2020-11-28 07:44:53,664 INFO L226 Difference]: Without dead ends: 638 [2020-11-28 07:44:53,665 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 07:44:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-11-28 07:44:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2020-11-28 07:44:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-11-28 07:44:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 874 transitions. [2020-11-28 07:44:53,697 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 874 transitions. Word has length 125 [2020-11-28 07:44:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:53,697 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 874 transitions. [2020-11-28 07:44:53,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 874 transitions. [2020-11-28 07:44:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-28 07:44:53,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:53,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:53,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-28 07:44:53,700 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1975086101, now seen corresponding path program 1 times [2020-11-28 07:44:53,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:53,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658329711] [2020-11-28 07:44:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-28 07:44:53,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658329711] [2020-11-28 07:44:53,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:53,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:53,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979447334] [2020-11-28 07:44:53,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:53,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:53,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:53,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:53,744 INFO L87 Difference]: Start difference. First operand 636 states and 874 transitions. Second operand 3 states. [2020-11-28 07:44:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:54,008 INFO L93 Difference]: Finished difference Result 1321 states and 1809 transitions. [2020-11-28 07:44:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:54,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-11-28 07:44:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:54,012 INFO L225 Difference]: With dead ends: 1321 [2020-11-28 07:44:54,012 INFO L226 Difference]: Without dead ends: 687 [2020-11-28 07:44:54,013 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 07:44:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-11-28 07:44:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2020-11-28 07:44:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-11-28 07:44:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 928 transitions. [2020-11-28 07:44:54,046 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 928 transitions. Word has length 129 [2020-11-28 07:44:54,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:54,047 INFO L481 AbstractCegarLoop]: Abstraction has 681 states and 928 transitions. [2020-11-28 07:44:54,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 928 transitions. [2020-11-28 07:44:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-28 07:44:54,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:54,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:54,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-28 07:44:54,050 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:54,050 INFO L82 PathProgramCache]: Analyzing trace with hash -477607933, now seen corresponding path program 1 times [2020-11-28 07:44:54,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:54,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122346986] [2020-11-28 07:44:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-28 07:44:54,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122346986] [2020-11-28 07:44:54,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:54,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:54,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508061954] [2020-11-28 07:44:54,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:54,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:54,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:54,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:54,096 INFO L87 Difference]: Start difference. First operand 681 states and 928 transitions. Second operand 3 states. [2020-11-28 07:44:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:54,349 INFO L93 Difference]: Finished difference Result 1363 states and 1857 transitions. [2020-11-28 07:44:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:54,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-11-28 07:44:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:54,354 INFO L225 Difference]: With dead ends: 1363 [2020-11-28 07:44:54,354 INFO L226 Difference]: Without dead ends: 668 [2020-11-28 07:44:54,355 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 07:44:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-11-28 07:44:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 665. [2020-11-28 07:44:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-11-28 07:44:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 905 transitions. [2020-11-28 07:44:54,389 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 905 transitions. Word has length 130 [2020-11-28 07:44:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:54,389 INFO L481 AbstractCegarLoop]: Abstraction has 665 states and 905 transitions. [2020-11-28 07:44:54,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 905 transitions. [2020-11-28 07:44:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-28 07:44:54,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:54,392 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-28 07:44:54,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-28 07:44:54,392 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:54,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2144292112, now seen corresponding path program 1 times [2020-11-28 07:44:54,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:54,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889920212] [2020-11-28 07:44:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-11-28 07:44:54,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889920212] [2020-11-28 07:44:54,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:54,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:54,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767935797] [2020-11-28 07:44:54,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:54,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:54,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:54,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:54,442 INFO L87 Difference]: Start difference. First operand 665 states and 905 transitions. Second operand 3 states. [2020-11-28 07:44:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:54,671 INFO L93 Difference]: Finished difference Result 1332 states and 1813 transitions. [2020-11-28 07:44:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:54,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-11-28 07:44:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:54,674 INFO L225 Difference]: With dead ends: 1332 [2020-11-28 07:44:54,674 INFO L226 Difference]: Without dead ends: 669 [2020-11-28 07:44:54,675 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 07:44:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-11-28 07:44:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 665. [2020-11-28 07:44:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-11-28 07:44:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 898 transitions. [2020-11-28 07:44:54,709 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 898 transitions. Word has length 134 [2020-11-28 07:44:54,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:54,709 INFO L481 AbstractCegarLoop]: Abstraction has 665 states and 898 transitions. [2020-11-28 07:44:54,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 898 transitions. [2020-11-28 07:44:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-28 07:44:54,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:54,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:54,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-28 07:44:54,712 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1215831198, now seen corresponding path program 1 times [2020-11-28 07:44:54,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:54,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245901270] [2020-11-28 07:44:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-11-28 07:44:54,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245901270] [2020-11-28 07:44:54,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:54,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:54,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764415540] [2020-11-28 07:44:54,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:54,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:54,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:54,757 INFO L87 Difference]: Start difference. First operand 665 states and 898 transitions. Second operand 3 states. [2020-11-28 07:44:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:54,984 INFO L93 Difference]: Finished difference Result 1320 states and 1782 transitions. [2020-11-28 07:44:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:54,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-11-28 07:44:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:54,988 INFO L225 Difference]: With dead ends: 1320 [2020-11-28 07:44:54,988 INFO L226 Difference]: Without dead ends: 640 [2020-11-28 07:44:54,989 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 07:44:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-11-28 07:44:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2020-11-28 07:44:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-11-28 07:44:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 853 transitions. [2020-11-28 07:44:55,022 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 853 transitions. Word has length 135 [2020-11-28 07:44:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:55,022 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 853 transitions. [2020-11-28 07:44:55,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 853 transitions. [2020-11-28 07:44:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-28 07:44:55,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:55,024 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:55,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-28 07:44:55,024 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1177983175, now seen corresponding path program 1 times [2020-11-28 07:44:55,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:55,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882648868] [2020-11-28 07:44:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-11-28 07:44:55,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882648868] [2020-11-28 07:44:55,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:55,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:55,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304781441] [2020-11-28 07:44:55,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:55,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:55,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:55,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:55,081 INFO L87 Difference]: Start difference. First operand 636 states and 853 transitions. Second operand 3 states. [2020-11-28 07:44:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:55,166 INFO L93 Difference]: Finished difference Result 1885 states and 2523 transitions. [2020-11-28 07:44:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:55,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-28 07:44:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:55,173 INFO L225 Difference]: With dead ends: 1885 [2020-11-28 07:44:55,173 INFO L226 Difference]: Without dead ends: 1251 [2020-11-28 07:44:55,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-11-28 07:44:55,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2020-11-28 07:44:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-11-28 07:44:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1668 transitions. [2020-11-28 07:44:55,242 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1668 transitions. Word has length 139 [2020-11-28 07:44:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:55,243 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 1668 transitions. [2020-11-28 07:44:55,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1668 transitions. [2020-11-28 07:44:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-28 07:44:55,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:55,244 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:55,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-28 07:44:55,244 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1796155715, now seen corresponding path program 1 times [2020-11-28 07:44:55,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:55,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584576730] [2020-11-28 07:44:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:55,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:55,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:55,437 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:44:55,437 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:44:55,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-28 07:44:55,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:55 BoogieIcfgContainer [2020-11-28 07:44:55,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:55,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:55,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:55,602 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:55,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:44" (3/4) ... [2020-11-28 07:44:55,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:44:55,751 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6fa0af55-c7e8-4fde-8568-7efdf400b808/bin/utaipan/witness.graphml [2020-11-28 07:44:55,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:55,753 INFO L168 Benchmark]: Toolchain (without parser) took 13156.98 ms. Allocated memory was 83.9 MB in the beginning and 283.1 MB in the end (delta: 199.2 MB). Free memory was 53.8 MB in the beginning and 216.6 MB in the end (delta: -162.8 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,754 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:55,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.80 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.8 MB in the beginning and 79.2 MB in the end (delta: -25.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.60 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 75.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,755 INFO L168 Benchmark]: Boogie Preprocessor took 47.38 ms. Allocated memory is still 107.0 MB. Free memory was 75.6 MB in the beginning and 73.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,755 INFO L168 Benchmark]: RCFGBuilder took 1751.16 ms. Allocated memory is still 107.0 MB. Free memory was 73.5 MB in the beginning and 45.6 MB in the end (delta: 27.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,756 INFO L168 Benchmark]: TraceAbstraction took 10608.07 ms. Allocated memory was 107.0 MB in the beginning and 283.1 MB in the end (delta: 176.2 MB). Free memory was 45.0 MB in the beginning and 233.4 MB in the end (delta: -188.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,756 INFO L168 Benchmark]: Witness Printer took 149.84 ms. Allocated memory is still 283.1 MB. Free memory was 233.4 MB in the beginning and 216.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:55,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 497.80 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.8 MB in the beginning and 79.2 MB in the end (delta: -25.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.60 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 75.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.38 ms. Allocated memory is still 107.0 MB. Free memory was 75.6 MB in the beginning and 73.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1751.16 ms. Allocated memory is still 107.0 MB. Free memory was 73.5 MB in the beginning and 45.6 MB in the end (delta: 27.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10608.07 ms. Allocated memory was 107.0 MB in the beginning and 283.1 MB in the end (delta: 176.2 MB). Free memory was 45.0 MB in the beginning and 233.4 MB in the end (delta: -188.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 16.1 GB. * Witness Printer took 149.84 ms. Allocated memory is still 283.1 MB. Free memory was 233.4 MB in the beginning and 216.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 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: [L704] int s ; [L705] int tmp ; [L709] s = 8464 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = 1; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__cert = __VERIFIER_nondet_int() ; [L28] int s__options = __VERIFIER_nondet_int() ; [L29] int s__verify_mode = __VERIFIER_nondet_int() ; [L30] int s__session__peer = __VERIFIER_nondet_int() ; [L31] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L32] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L35] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__cert_request ; [L37] int s__s3__tmp__reuse_message ; [L38] int s__s3__tmp__use_rsa_tmp ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_cipher__algo_strength ; [L43] int s__session__cipher ; [L44] int buf ; [L45] unsigned long l ; [L46] unsigned long Time ; [L47] unsigned long tmp ; [L48] int cb ; [L49] long num1 = __VERIFIER_nondet_long() ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int got_new_session ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 ; [L62] long tmp___8 = __VERIFIER_nondet_long() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int tmp___10 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] unsigned long __cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 ; [L70] unsigned long __cil_tmp59 ; [L71] int __cil_tmp60 ; [L72] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L76] s__state = initial_state [L77] blastFlag = 0 [L78] tmp = __VERIFIER_nondet_int() [L79] Time = tmp [L80] cb = 0 [L81] ret = -1 [L82] skip = 0 [L83] got_new_session = 0 [L84] COND TRUE s__info_callback != 0 [L85] cb = s__info_callback [L91] s__in_handshake ++ [L92] COND FALSE !(tmp___1 + 12288) [L97] COND FALSE !(s__cert == 0) [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND TRUE s__state == 8464 [L274] s__shutdown = 0 [L275] ret = __VERIFIER_nondet_int() [L276] COND TRUE blastFlag == 0 [L277] blastFlag = 1 [L279] COND FALSE !(ret <= 0) [L282] got_new_session = 1 [L283] s__state = 8496 [L284] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND TRUE s__state == 8496 [L288] ret = __VERIFIER_nondet_int() [L289] COND TRUE blastFlag == 1 [L290] blastFlag = 2 [L292] COND FALSE !(ret <= 0) [L295] COND FALSE !(\read(s__hit)) [L298] s__state = 8512 [L300] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND TRUE s__state == 8512 [L305] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L306] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L307] COND TRUE __cil_tmp56 + 256UL [L308] __cil_tmp56 = 256345 [L309] skip = 1 [L320] s__state = 8528 [L321] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND TRUE s__state == 8528 [L325] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L326] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L328] __cil_tmp57 = (unsigned long )s__options [L329] COND TRUE __cil_tmp57 + 2097152UL [L330] s__s3__tmp__use_rsa_tmp = 1 [L335] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L363] ret = __VERIFIER_nondet_int() [L364] COND FALSE !(blastFlag == 3) [L367] COND FALSE !(ret <= 0) [L384] s__state = 8544 [L385] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND TRUE s__state == 8544 [L389] COND TRUE s__verify_mode + 1 [L390] COND TRUE s__session__peer != 0 [L391] COND TRUE s__verify_mode + 4 [L392] s__verify_mode = 123 [L393] skip = 1 [L394] s__s3__tmp__cert_request = 0 [L395] s__state = 8560 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND FALSE !(s__state == 8544) [L158] COND FALSE !(s__state == 8545) [L161] COND TRUE s__state == 8560 [L439] ret = __VERIFIER_nondet_int() [L440] COND FALSE !(ret <= 0) [L443] s__s3__tmp__next_state___0 = 8576 [L444] s__state = 8448 [L445] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND TRUE ! s__s3__tmp__reuse_message [L655] COND TRUE ! skip [L656] COND TRUE state == 8560 [L657] COND TRUE s__state == 8448 [L658] COND TRUE s__verify_mode != -1 [L659] COND TRUE s__verify_mode != -2 [L660] COND TRUE __cil_tmp61 != 9021 [L661] COND TRUE __cil_tmp58 != 4294967294 [L662] COND TRUE blastFlag != 4 [L663] COND TRUE tmp___7 != 1024 [L3] __assert_fail("0", "s3_srvr_12.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.3s, OverallIterations: 33, TraceHistogramMax: 6, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3969 SDtfs, 4395 SDslu, 816 SDs, 0 SdLazy, 2772 SolverSat, 1263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1249occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 32 MinimizatonAttempts, 198 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 2505 NumberOfCodeBlocks, 2505 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2332 ConstructedInterpolants, 0 QuantifiedInterpolants, 394525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 1895/1895 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...