./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash defe4a000b54820195525cab63f7790d3323d50a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-19 22:24:12,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:24:12,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:24:12,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:24:12,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:24:12,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:24:12,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:24:12,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:24:12,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:24:12,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:24:12,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:24:12,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:24:12,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:24:12,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:24:12,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:24:12,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:24:12,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:24:12,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:24:12,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:24:12,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:24:12,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:24:12,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:24:12,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:24:12,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:24:12,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:24:12,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:24:12,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:24:12,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:24:12,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:24:12,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:24:12,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:24:12,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:24:12,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:24:12,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:24:12,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:24:12,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:24:12,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:24:12,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:24:12,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:24:12,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:24:12,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:24:12,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:24:12,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:24:12,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:24:12,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:24:12,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:24:12,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:24:12,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:24:12,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:24:12,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:24:12,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:24:12,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:24:12,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:24:12,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:24:12,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:24:12,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:24:12,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:24:12,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:24:12,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:24:12,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:24:12,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:24:12,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:24:12,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:24:12,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:24:12,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:24:12,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:24:12,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:24:12,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:24:12,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:24:12,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:24:12,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:24:12,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> defe4a000b54820195525cab63f7790d3323d50a [2020-10-19 22:24:12,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:24:12,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:24:12,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:24:12,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:24:12,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:24:12,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-10-19 22:24:12,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a020b1386/fa414f5be51243169100aac3c95f6e07/FLAGbb4507f9a [2020-10-19 22:24:13,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:24:13,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-10-19 22:24:13,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a020b1386/fa414f5be51243169100aac3c95f6e07/FLAGbb4507f9a [2020-10-19 22:24:13,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a020b1386/fa414f5be51243169100aac3c95f6e07 [2020-10-19 22:24:13,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:24:13,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:24:13,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:13,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:24:13,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:24:13,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:13" (1/1) ... [2020-10-19 22:24:13,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7a8e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:13, skipping insertion in model container [2020-10-19 22:24:13,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:13" (1/1) ... [2020-10-19 22:24:13,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:24:13,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:24:14,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:14,060 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:24:14,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:14,140 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:24:14,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14 WrapperNode [2020-10-19 22:24:14,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:14,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:14,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:24:14,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:24:14,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:14,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:24:14,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:24:14,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:24:14,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:24:14,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:24:14,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:24:14,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:24:14,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:24:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:24:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:24:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:24:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:24:14,452 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:24:15,080 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-19 22:24:15,080 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-19 22:24:15,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:24:15,096 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:24:15,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:15 BoogieIcfgContainer [2020-10-19 22:24:15,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:24:15,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:24:15,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:24:15,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:24:15,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:24:13" (1/3) ... [2020-10-19 22:24:15,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6300f607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:15, skipping insertion in model container [2020-10-19 22:24:15,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14" (2/3) ... [2020-10-19 22:24:15,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6300f607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:15, skipping insertion in model container [2020-10-19 22:24:15,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:15" (3/3) ... [2020-10-19 22:24:15,106 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2020-10-19 22:24:15,118 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:24:15,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:24:15,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:24:15,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:24:15,169 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:24:15,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:24:15,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:24:15,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:24:15,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:24:15,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:24:15,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:24:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-19 22:24:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:24:15,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:15,200 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] [2020-10-19 22:24:15,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -814657320, now seen corresponding path program 1 times [2020-10-19 22:24:15,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:15,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380797854] [2020-10-19 22:24:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:15,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380797854] [2020-10-19 22:24:15,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:15,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:15,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074391907] [2020-10-19 22:24:15,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:15,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:15,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:15,535 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 3 states. [2020-10-19 22:24:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:15,838 INFO L93 Difference]: Finished difference Result 317 states and 543 transitions. [2020-10-19 22:24:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:15,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:24:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:15,855 INFO L225 Difference]: With dead ends: 317 [2020-10-19 22:24:15,855 INFO L226 Difference]: Without dead ends: 155 [2020-10-19 22:24:15,859 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 [2020-10-19 22:24:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-19 22:24:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-10-19 22:24:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-19 22:24:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 241 transitions. [2020-10-19 22:24:15,915 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 241 transitions. Word has length 26 [2020-10-19 22:24:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:15,915 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 241 transitions. [2020-10-19 22:24:15,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 241 transitions. [2020-10-19 22:24:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:15,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:15,918 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] [2020-10-19 22:24:15,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:24:15,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash 327844106, now seen corresponding path program 1 times [2020-10-19 22:24:15,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:15,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865122017] [2020-10-19 22:24:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:16,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865122017] [2020-10-19 22:24:16,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:16,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:16,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996881139] [2020-10-19 22:24:16,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:16,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:16,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:16,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:16,031 INFO L87 Difference]: Start difference. First operand 153 states and 241 transitions. Second operand 3 states. [2020-10-19 22:24:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:16,214 INFO L93 Difference]: Finished difference Result 319 states and 502 transitions. [2020-10-19 22:24:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:16,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:16,220 INFO L225 Difference]: With dead ends: 319 [2020-10-19 22:24:16,220 INFO L226 Difference]: Without dead ends: 174 [2020-10-19 22:24:16,222 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 [2020-10-19 22:24:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-19 22:24:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-19 22:24:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-19 22:24:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2020-10-19 22:24:16,255 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 270 transitions. Word has length 27 [2020-10-19 22:24:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:16,255 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-10-19 22:24:16,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 270 transitions. [2020-10-19 22:24:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:16,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:16,258 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] [2020-10-19 22:24:16,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:24:16,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 883966207, now seen corresponding path program 1 times [2020-10-19 22:24:16,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:16,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7682607] [2020-10-19 22:24:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:16,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7682607] [2020-10-19 22:24:16,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:16,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:16,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031462289] [2020-10-19 22:24:16,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:16,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:16,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:16,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:16,377 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. Second operand 3 states. [2020-10-19 22:24:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:16,542 INFO L93 Difference]: Finished difference Result 348 states and 542 transitions. [2020-10-19 22:24:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:16,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:16,546 INFO L225 Difference]: With dead ends: 348 [2020-10-19 22:24:16,546 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 22:24:16,547 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 [2020-10-19 22:24:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 22:24:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-10-19 22:24:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-19 22:24:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 281 transitions. [2020-10-19 22:24:16,562 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 281 transitions. Word has length 27 [2020-10-19 22:24:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:16,562 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 281 transitions. [2020-10-19 22:24:16,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 281 transitions. [2020-10-19 22:24:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:16,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:16,564 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] [2020-10-19 22:24:16,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:24:16,565 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:16,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1794489921, now seen corresponding path program 1 times [2020-10-19 22:24:16,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:16,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046150708] [2020-10-19 22:24:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:16,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046150708] [2020-10-19 22:24:16,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:16,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:16,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396673170] [2020-10-19 22:24:16,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:16,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:16,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:16,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:16,647 INFO L87 Difference]: Start difference. First operand 180 states and 281 transitions. Second operand 3 states. [2020-10-19 22:24:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:16,821 INFO L93 Difference]: Finished difference Result 353 states and 552 transitions. [2020-10-19 22:24:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:16,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:16,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:16,824 INFO L225 Difference]: With dead ends: 353 [2020-10-19 22:24:16,825 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:24:16,826 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 [2020-10-19 22:24:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:24:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-10-19 22:24:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-19 22:24:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 282 transitions. [2020-10-19 22:24:16,869 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 282 transitions. Word has length 27 [2020-10-19 22:24:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:16,869 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 282 transitions. [2020-10-19 22:24:16,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2020-10-19 22:24:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:24:16,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:16,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:16,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:24:16,872 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:16,872 INFO L82 PathProgramCache]: Analyzing trace with hash -594155684, now seen corresponding path program 1 times [2020-10-19 22:24:16,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:16,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510039091] [2020-10-19 22:24:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:16,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510039091] [2020-10-19 22:24:16,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:16,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:16,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968217230] [2020-10-19 22:24:16,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:16,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:16,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:16,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:16,944 INFO L87 Difference]: Start difference. First operand 181 states and 282 transitions. Second operand 3 states. [2020-10-19 22:24:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,098 INFO L93 Difference]: Finished difference Result 364 states and 564 transitions. [2020-10-19 22:24:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:17,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-19 22:24:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,100 INFO L225 Difference]: With dead ends: 364 [2020-10-19 22:24:17,100 INFO L226 Difference]: Without dead ends: 191 [2020-10-19 22:24:17,101 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 [2020-10-19 22:24:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-19 22:24:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-10-19 22:24:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-19 22:24:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2020-10-19 22:24:17,119 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 28 [2020-10-19 22:24:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,120 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2020-10-19 22:24:17,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2020-10-19 22:24:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 22:24:17,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:17,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:24:17,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1519140995, now seen corresponding path program 1 times [2020-10-19 22:24:17,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978473959] [2020-10-19 22:24:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:17,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978473959] [2020-10-19 22:24:17,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765455093] [2020-10-19 22:24:17,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,207 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand 3 states. [2020-10-19 22:24:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,359 INFO L93 Difference]: Finished difference Result 364 states and 560 transitions. [2020-10-19 22:24:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:17,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-19 22:24:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,361 INFO L225 Difference]: With dead ends: 364 [2020-10-19 22:24:17,362 INFO L226 Difference]: Without dead ends: 191 [2020-10-19 22:24:17,362 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 [2020-10-19 22:24:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-19 22:24:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-10-19 22:24:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-19 22:24:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 278 transitions. [2020-10-19 22:24:17,371 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 278 transitions. Word has length 29 [2020-10-19 22:24:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,371 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 278 transitions. [2020-10-19 22:24:17,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 278 transitions. [2020-10-19 22:24:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:24:17,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,373 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] [2020-10-19 22:24:17,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:24:17,373 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1615530751, now seen corresponding path program 1 times [2020-10-19 22:24:17,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877518490] [2020-10-19 22:24:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:17,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877518490] [2020-10-19 22:24:17,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534353935] [2020-10-19 22:24:17,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,404 INFO L87 Difference]: Start difference. First operand 181 states and 278 transitions. Second operand 3 states. [2020-10-19 22:24:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,542 INFO L93 Difference]: Finished difference Result 364 states and 556 transitions. [2020-10-19 22:24:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:17,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-19 22:24:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,544 INFO L225 Difference]: With dead ends: 364 [2020-10-19 22:24:17,544 INFO L226 Difference]: Without dead ends: 191 [2020-10-19 22:24:17,545 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 [2020-10-19 22:24:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-19 22:24:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-10-19 22:24:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-19 22:24:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 276 transitions. [2020-10-19 22:24:17,553 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 276 transitions. Word has length 30 [2020-10-19 22:24:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,554 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 276 transitions. [2020-10-19 22:24:17,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 276 transitions. [2020-10-19 22:24:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:24:17,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,555 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] [2020-10-19 22:24:17,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:24:17,555 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1189847454, now seen corresponding path program 1 times [2020-10-19 22:24:17,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151231209] [2020-10-19 22:24:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:17,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151231209] [2020-10-19 22:24:17,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:24:17,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426622109] [2020-10-19 22:24:17,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:24:17,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:24:17,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:24:17,599 INFO L87 Difference]: Start difference. First operand 181 states and 276 transitions. Second operand 4 states. [2020-10-19 22:24:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,868 INFO L93 Difference]: Finished difference Result 512 states and 779 transitions. [2020-10-19 22:24:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:24:17,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 22:24:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,871 INFO L225 Difference]: With dead ends: 512 [2020-10-19 22:24:17,871 INFO L226 Difference]: Without dead ends: 339 [2020-10-19 22:24:17,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:17,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-19 22:24:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2020-10-19 22:24:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-19 22:24:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 495 transitions. [2020-10-19 22:24:17,886 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 495 transitions. Word has length 30 [2020-10-19 22:24:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,887 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 495 transitions. [2020-10-19 22:24:17,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:24:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 495 transitions. [2020-10-19 22:24:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-19 22:24:17,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,888 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, 1, 1, 1, 1] [2020-10-19 22:24:17,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:24:17,888 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1632006041, now seen corresponding path program 1 times [2020-10-19 22:24:17,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003256433] [2020-10-19 22:24:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:17,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003256433] [2020-10-19 22:24:17,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735372777] [2020-10-19 22:24:17,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,979 INFO L87 Difference]: Start difference. First operand 324 states and 495 transitions. Second operand 3 states. [2020-10-19 22:24:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,197 INFO L93 Difference]: Finished difference Result 699 states and 1075 transitions. [2020-10-19 22:24:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:18,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-10-19 22:24:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,201 INFO L225 Difference]: With dead ends: 699 [2020-10-19 22:24:18,201 INFO L226 Difference]: Without dead ends: 383 [2020-10-19 22:24:18,202 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 [2020-10-19 22:24:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-19 22:24:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2020-10-19 22:24:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-19 22:24:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 582 transitions. [2020-10-19 22:24:18,224 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 582 transitions. Word has length 44 [2020-10-19 22:24:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,226 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 582 transitions. [2020-10-19 22:24:18,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 582 transitions. [2020-10-19 22:24:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:24:18,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,228 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, 1, 1, 1, 1, 1] [2020-10-19 22:24:18,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:24:18,228 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash -954576389, now seen corresponding path program 1 times [2020-10-19 22:24:18,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316023925] [2020-10-19 22:24:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:18,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316023925] [2020-10-19 22:24:18,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:18,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843852995] [2020-10-19 22:24:18,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:18,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:18,293 INFO L87 Difference]: Start difference. First operand 375 states and 582 transitions. Second operand 3 states. [2020-10-19 22:24:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,522 INFO L93 Difference]: Finished difference Result 776 states and 1211 transitions. [2020-10-19 22:24:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:18,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-10-19 22:24:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,528 INFO L225 Difference]: With dead ends: 776 [2020-10-19 22:24:18,528 INFO L226 Difference]: Without dead ends: 407 [2020-10-19 22:24:18,529 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 [2020-10-19 22:24:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-19 22:24:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2020-10-19 22:24:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-19 22:24:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 628 transitions. [2020-10-19 22:24:18,549 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 628 transitions. Word has length 45 [2020-10-19 22:24:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,549 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 628 transitions. [2020-10-19 22:24:18,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 628 transitions. [2020-10-19 22:24:18,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-19 22:24:18,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:18,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:24:18,552 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1426018212, now seen corresponding path program 1 times [2020-10-19 22:24:18,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843366406] [2020-10-19 22:24:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:24:18,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843366406] [2020-10-19 22:24:18,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:18,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012244244] [2020-10-19 22:24:18,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:18,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:18,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:18,596 INFO L87 Difference]: Start difference. First operand 399 states and 628 transitions. Second operand 3 states. [2020-10-19 22:24:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,777 INFO L93 Difference]: Finished difference Result 830 states and 1311 transitions. [2020-10-19 22:24:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:18,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-10-19 22:24:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,780 INFO L225 Difference]: With dead ends: 830 [2020-10-19 22:24:18,781 INFO L226 Difference]: Without dead ends: 439 [2020-10-19 22:24:18,782 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 [2020-10-19 22:24:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-19 22:24:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2020-10-19 22:24:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-19 22:24:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 693 transitions. [2020-10-19 22:24:18,807 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 693 transitions. Word has length 55 [2020-10-19 22:24:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,807 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 693 transitions. [2020-10-19 22:24:18,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:18,808 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 693 transitions. [2020-10-19 22:24:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-19 22:24:18,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:18,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:24:18,810 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,810 INFO L82 PathProgramCache]: Analyzing trace with hash 961137590, now seen corresponding path program 1 times [2020-10-19 22:24:18,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400096399] [2020-10-19 22:24:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:24:18,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400096399] [2020-10-19 22:24:18,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:18,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102011585] [2020-10-19 22:24:18,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:18,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:18,875 INFO L87 Difference]: Start difference. First operand 439 states and 693 transitions. Second operand 3 states. [2020-10-19 22:24:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,041 INFO L93 Difference]: Finished difference Result 912 states and 1441 transitions. [2020-10-19 22:24:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-10-19 22:24:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,045 INFO L225 Difference]: With dead ends: 912 [2020-10-19 22:24:19,045 INFO L226 Difference]: Without dead ends: 481 [2020-10-19 22:24:19,046 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 [2020-10-19 22:24:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-19 22:24:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-10-19 22:24:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-19 22:24:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 753 transitions. [2020-10-19 22:24:19,067 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 753 transitions. Word has length 82 [2020-10-19 22:24:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,067 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 753 transitions. [2020-10-19 22:24:19,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 753 transitions. [2020-10-19 22:24:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-19 22:24:19,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:19,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:24:19,069 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash -986689731, now seen corresponding path program 1 times [2020-10-19 22:24:19,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813924186] [2020-10-19 22:24:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:24:19,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813924186] [2020-10-19 22:24:19,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209336473] [2020-10-19 22:24:19,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,144 INFO L87 Difference]: Start difference. First operand 477 states and 753 transitions. Second operand 3 states. [2020-10-19 22:24:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,321 INFO L93 Difference]: Finished difference Result 950 states and 1498 transitions. [2020-10-19 22:24:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-10-19 22:24:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,326 INFO L225 Difference]: With dead ends: 950 [2020-10-19 22:24:19,326 INFO L226 Difference]: Without dead ends: 481 [2020-10-19 22:24:19,328 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 [2020-10-19 22:24:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-19 22:24:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-10-19 22:24:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-19 22:24:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 750 transitions. [2020-10-19 22:24:19,368 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 750 transitions. Word has length 83 [2020-10-19 22:24:19,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,372 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 750 transitions. [2020-10-19 22:24:19,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 750 transitions. [2020-10-19 22:24:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:24:19,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-19 22:24:19,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:24:19,382 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1836560986, now seen corresponding path program 1 times [2020-10-19 22:24:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680321989] [2020-10-19 22:24:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:24:19,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680321989] [2020-10-19 22:24:19,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554610215] [2020-10-19 22:24:19,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,440 INFO L87 Difference]: Start difference. First operand 477 states and 750 transitions. Second operand 3 states. [2020-10-19 22:24:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,626 INFO L93 Difference]: Finished difference Result 998 states and 1573 transitions. [2020-10-19 22:24:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-10-19 22:24:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,630 INFO L225 Difference]: With dead ends: 998 [2020-10-19 22:24:19,631 INFO L226 Difference]: Without dead ends: 529 [2020-10-19 22:24:19,633 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 [2020-10-19 22:24:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-19 22:24:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-10-19 22:24:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-19 22:24:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 805 transitions. [2020-10-19 22:24:19,658 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 805 transitions. Word has length 84 [2020-10-19 22:24:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,658 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 805 transitions. [2020-10-19 22:24:19,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 805 transitions. [2020-10-19 22:24:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 22:24:19,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-19 22:24:19,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:24:19,663 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1112959693, now seen corresponding path program 1 times [2020-10-19 22:24:19,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947811625] [2020-10-19 22:24:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:24:19,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947811625] [2020-10-19 22:24:19,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635468513] [2020-10-19 22:24:19,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,707 INFO L87 Difference]: Start difference. First operand 513 states and 805 transitions. Second operand 3 states. [2020-10-19 22:24:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,902 INFO L93 Difference]: Finished difference Result 1034 states and 1624 transitions. [2020-10-19 22:24:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-10-19 22:24:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,906 INFO L225 Difference]: With dead ends: 1034 [2020-10-19 22:24:19,906 INFO L226 Difference]: Without dead ends: 529 [2020-10-19 22:24:19,909 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 [2020-10-19 22:24:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-19 22:24:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-10-19 22:24:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-19 22:24:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 801 transitions. [2020-10-19 22:24:19,934 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 801 transitions. Word has length 85 [2020-10-19 22:24:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,934 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 801 transitions. [2020-10-19 22:24:19,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 801 transitions. [2020-10-19 22:24:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 22:24:19,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:19,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:24:19,937 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash 167103299, now seen corresponding path program 1 times [2020-10-19 22:24:19,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010147792] [2020-10-19 22:24:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010147792] [2020-10-19 22:24:20,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105858119] [2020-10-19 22:24:20,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,003 INFO L87 Difference]: Start difference. First operand 513 states and 801 transitions. Second operand 3 states. [2020-10-19 22:24:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,196 INFO L93 Difference]: Finished difference Result 1079 states and 1683 transitions. [2020-10-19 22:24:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-10-19 22:24:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,201 INFO L225 Difference]: With dead ends: 1079 [2020-10-19 22:24:20,202 INFO L226 Difference]: Without dead ends: 574 [2020-10-19 22:24:20,203 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 [2020-10-19 22:24:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-19 22:24:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 566. [2020-10-19 22:24:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-19 22:24:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 882 transitions. [2020-10-19 22:24:20,228 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 882 transitions. Word has length 85 [2020-10-19 22:24:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,229 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 882 transitions. [2020-10-19 22:24:20,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 882 transitions. [2020-10-19 22:24:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-19 22:24:20,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:20,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:24:20,231 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1767051647, now seen corresponding path program 1 times [2020-10-19 22:24:20,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585011239] [2020-10-19 22:24:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:20,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585011239] [2020-10-19 22:24:20,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78533305] [2020-10-19 22:24:20,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,271 INFO L87 Difference]: Start difference. First operand 566 states and 882 transitions. Second operand 3 states. [2020-10-19 22:24:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,462 INFO L93 Difference]: Finished difference Result 1132 states and 1762 transitions. [2020-10-19 22:24:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-10-19 22:24:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,466 INFO L225 Difference]: With dead ends: 1132 [2020-10-19 22:24:20,467 INFO L226 Difference]: Without dead ends: 572 [2020-10-19 22:24:20,468 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 [2020-10-19 22:24:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-19 22:24:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 564. [2020-10-19 22:24:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-19 22:24:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 877 transitions. [2020-10-19 22:24:20,491 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 877 transitions. Word has length 86 [2020-10-19 22:24:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,491 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 877 transitions. [2020-10-19 22:24:20,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 877 transitions. [2020-10-19 22:24:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-19 22:24:20,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:20,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:24:20,494 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1128064849, now seen corresponding path program 1 times [2020-10-19 22:24:20,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247398269] [2020-10-19 22:24:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-19 22:24:20,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247398269] [2020-10-19 22:24:20,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285441915] [2020-10-19 22:24:20,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,531 INFO L87 Difference]: Start difference. First operand 564 states and 877 transitions. Second operand 3 states. [2020-10-19 22:24:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,717 INFO L93 Difference]: Finished difference Result 1160 states and 1805 transitions. [2020-10-19 22:24:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-10-19 22:24:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,723 INFO L225 Difference]: With dead ends: 1160 [2020-10-19 22:24:20,723 INFO L226 Difference]: Without dead ends: 604 [2020-10-19 22:24:20,725 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 [2020-10-19 22:24:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-10-19 22:24:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-10-19 22:24:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-19 22:24:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 918 transitions. [2020-10-19 22:24:20,757 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 918 transitions. Word has length 107 [2020-10-19 22:24:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,757 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 918 transitions. [2020-10-19 22:24:20,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 918 transitions. [2020-10-19 22:24:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-19 22:24:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:20,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:24:20,761 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash 56241544, now seen corresponding path program 1 times [2020-10-19 22:24:20,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995143233] [2020-10-19 22:24:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-19 22:24:20,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995143233] [2020-10-19 22:24:20,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093249703] [2020-10-19 22:24:20,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,828 INFO L87 Difference]: Start difference. First operand 594 states and 918 transitions. Second operand 3 states. [2020-10-19 22:24:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,040 INFO L93 Difference]: Finished difference Result 1190 states and 1840 transitions. [2020-10-19 22:24:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-10-19 22:24:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,045 INFO L225 Difference]: With dead ends: 1190 [2020-10-19 22:24:21,046 INFO L226 Difference]: Without dead ends: 604 [2020-10-19 22:24:21,047 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 [2020-10-19 22:24:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-10-19 22:24:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-10-19 22:24:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-19 22:24:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 912 transitions. [2020-10-19 22:24:21,085 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 912 transitions. Word has length 108 [2020-10-19 22:24:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:21,085 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 912 transitions. [2020-10-19 22:24:21,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:21,086 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 912 transitions. [2020-10-19 22:24:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-19 22:24:21,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:21,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:21,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:24:21,089 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash -296831400, now seen corresponding path program 1 times [2020-10-19 22:24:21,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:21,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119982065] [2020-10-19 22:24:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-19 22:24:21,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119982065] [2020-10-19 22:24:21,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631892560] [2020-10-19 22:24:21,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,162 INFO L87 Difference]: Start difference. First operand 594 states and 912 transitions. Second operand 3 states. [2020-10-19 22:24:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,379 INFO L93 Difference]: Finished difference Result 1240 states and 1907 transitions. [2020-10-19 22:24:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-10-19 22:24:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,385 INFO L225 Difference]: With dead ends: 1240 [2020-10-19 22:24:21,385 INFO L226 Difference]: Without dead ends: 654 [2020-10-19 22:24:21,388 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 [2020-10-19 22:24:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-19 22:24:21,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-10-19 22:24:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-19 22:24:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 959 transitions. [2020-10-19 22:24:21,416 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 959 transitions. Word has length 111 [2020-10-19 22:24:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:21,416 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 959 transitions. [2020-10-19 22:24:21,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 959 transitions. [2020-10-19 22:24:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-19 22:24:21,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:21,419 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-19 22:24:21,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:24:21,419 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:21,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1499138703, now seen corresponding path program 1 times [2020-10-19 22:24:21,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:21,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389463974] [2020-10-19 22:24:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-19 22:24:21,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389463974] [2020-10-19 22:24:21,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762450227] [2020-10-19 22:24:21,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,478 INFO L87 Difference]: Start difference. First operand 628 states and 959 transitions. Second operand 3 states. [2020-10-19 22:24:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,643 INFO L93 Difference]: Finished difference Result 1274 states and 1948 transitions. [2020-10-19 22:24:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-10-19 22:24:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,647 INFO L225 Difference]: With dead ends: 1274 [2020-10-19 22:24:21,647 INFO L226 Difference]: Without dead ends: 654 [2020-10-19 22:24:21,649 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 [2020-10-19 22:24:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-19 22:24:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-10-19 22:24:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-19 22:24:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 953 transitions. [2020-10-19 22:24:21,677 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 953 transitions. Word has length 112 [2020-10-19 22:24:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:21,677 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 953 transitions. [2020-10-19 22:24:21,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 953 transitions. [2020-10-19 22:24:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-19 22:24:21,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:21,679 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:21,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:24:21,680 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 657079250, now seen corresponding path program 1 times [2020-10-19 22:24:21,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:21,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866875352] [2020-10-19 22:24:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-19 22:24:21,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866875352] [2020-10-19 22:24:21,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781732604] [2020-10-19 22:24:21,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,739 INFO L87 Difference]: Start difference. First operand 628 states and 953 transitions. Second operand 3 states. [2020-10-19 22:24:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,992 INFO L93 Difference]: Finished difference Result 1301 states and 1973 transitions. [2020-10-19 22:24:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-10-19 22:24:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,999 INFO L225 Difference]: With dead ends: 1301 [2020-10-19 22:24:22,000 INFO L226 Difference]: Without dead ends: 681 [2020-10-19 22:24:22,002 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 [2020-10-19 22:24:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-19 22:24:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2020-10-19 22:24:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-19 22:24:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1021 transitions. [2020-10-19 22:24:22,045 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1021 transitions. Word has length 123 [2020-10-19 22:24:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,045 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1021 transitions. [2020-10-19 22:24:22,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1021 transitions. [2020-10-19 22:24:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-19 22:24:22,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:22,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:24:22,050 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1371731480, now seen corresponding path program 1 times [2020-10-19 22:24:22,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089305161] [2020-10-19 22:24:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-19 22:24:22,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089305161] [2020-10-19 22:24:22,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:22,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:22,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589164215] [2020-10-19 22:24:22,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:22,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:22,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:22,170 INFO L87 Difference]: Start difference. First operand 675 states and 1021 transitions. Second operand 3 states. [2020-10-19 22:24:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:22,262 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2020-10-19 22:24:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:22,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-10-19 22:24:22,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:22,272 INFO L225 Difference]: With dead ends: 1344 [2020-10-19 22:24:22,272 INFO L226 Difference]: Without dead ends: 1342 [2020-10-19 22:24:22,273 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 [2020-10-19 22:24:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-10-19 22:24:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2020-10-19 22:24:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-10-19 22:24:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2027 transitions. [2020-10-19 22:24:22,352 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2027 transitions. Word has length 124 [2020-10-19 22:24:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,353 INFO L481 AbstractCegarLoop]: Abstraction has 1340 states and 2027 transitions. [2020-10-19 22:24:22,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2027 transitions. [2020-10-19 22:24:22,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:24:22,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:22,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:24:22,361 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1920674126, now seen corresponding path program 1 times [2020-10-19 22:24:22,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673893129] [2020-10-19 22:24:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-19 22:24:22,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673893129] [2020-10-19 22:24:22,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:22,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:22,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730631167] [2020-10-19 22:24:22,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:22,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:22,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:22,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:22,469 INFO L87 Difference]: Start difference. First operand 1340 states and 2027 transitions. Second operand 3 states. [2020-10-19 22:24:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:22,587 INFO L93 Difference]: Finished difference Result 3329 states and 5035 transitions. [2020-10-19 22:24:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:22,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-10-19 22:24:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:22,602 INFO L225 Difference]: With dead ends: 3329 [2020-10-19 22:24:22,602 INFO L226 Difference]: Without dead ends: 1997 [2020-10-19 22:24:22,605 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 [2020-10-19 22:24:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-19 22:24:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2020-10-19 22:24:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-10-19 22:24:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3013 transitions. [2020-10-19 22:24:23,164 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3013 transitions. Word has length 125 [2020-10-19 22:24:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:23,164 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 3013 transitions. [2020-10-19 22:24:23,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3013 transitions. [2020-10-19 22:24:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:24:23,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:23,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:23,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:24:23,171 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash 232432692, now seen corresponding path program 1 times [2020-10-19 22:24:23,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:23,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146525044] [2020-10-19 22:24:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-19 22:24:23,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146525044] [2020-10-19 22:24:23,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:23,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:23,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330251245] [2020-10-19 22:24:23,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:23,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:23,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:23,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:23,232 INFO L87 Difference]: Start difference. First operand 1995 states and 3013 transitions. Second operand 3 states. [2020-10-19 22:24:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:23,382 INFO L93 Difference]: Finished difference Result 4617 states and 6972 transitions. [2020-10-19 22:24:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:23,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-10-19 22:24:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:23,401 INFO L225 Difference]: With dead ends: 4617 [2020-10-19 22:24:23,402 INFO L226 Difference]: Without dead ends: 2630 [2020-10-19 22:24:23,406 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 [2020-10-19 22:24:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-10-19 22:24:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2628. [2020-10-19 22:24:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-10-19 22:24:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3962 transitions. [2020-10-19 22:24:23,593 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3962 transitions. Word has length 125 [2020-10-19 22:24:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:23,594 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3962 transitions. [2020-10-19 22:24:23,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3962 transitions. [2020-10-19 22:24:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-19 22:24:23,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:23,598 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:23,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:24:23,599 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash 357624272, now seen corresponding path program 1 times [2020-10-19 22:24:23,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:23,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433325110] [2020-10-19 22:24:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-19 22:24:23,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433325110] [2020-10-19 22:24:23,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:23,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:23,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294968095] [2020-10-19 22:24:23,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:23,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:23,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:23,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:23,650 INFO L87 Difference]: Start difference. First operand 2628 states and 3962 transitions. Second operand 3 states. [2020-10-19 22:24:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:23,911 INFO L93 Difference]: Finished difference Result 5376 states and 8099 transitions. [2020-10-19 22:24:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:23,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-10-19 22:24:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:23,926 INFO L225 Difference]: With dead ends: 5376 [2020-10-19 22:24:23,926 INFO L226 Difference]: Without dead ends: 2756 [2020-10-19 22:24:23,930 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 [2020-10-19 22:24:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-10-19 22:24:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-10-19 22:24:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-10-19 22:24:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4077 transitions. [2020-10-19 22:24:24,204 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4077 transitions. Word has length 133 [2020-10-19 22:24:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:24,204 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4077 transitions. [2020-10-19 22:24:24,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4077 transitions. [2020-10-19 22:24:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-19 22:24:24,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:24,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-10-19 22:24:24,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:24:24,209 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:24,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1875401929, now seen corresponding path program 1 times [2020-10-19 22:24:24,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:24,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003416483] [2020-10-19 22:24:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-19 22:24:24,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003416483] [2020-10-19 22:24:24,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:24,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:24,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065353048] [2020-10-19 22:24:24,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:24,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:24,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:24,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:24,251 INFO L87 Difference]: Start difference. First operand 2724 states and 4077 transitions. Second operand 3 states. [2020-10-19 22:24:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:24,505 INFO L93 Difference]: Finished difference Result 5472 states and 8182 transitions. [2020-10-19 22:24:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:24,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-10-19 22:24:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:24,519 INFO L225 Difference]: With dead ends: 5472 [2020-10-19 22:24:24,519 INFO L226 Difference]: Without dead ends: 2756 [2020-10-19 22:24:24,523 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 [2020-10-19 22:24:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-10-19 22:24:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-10-19 22:24:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-10-19 22:24:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4045 transitions. [2020-10-19 22:24:24,626 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4045 transitions. Word has length 134 [2020-10-19 22:24:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:24,626 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4045 transitions. [2020-10-19 22:24:24,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4045 transitions. [2020-10-19 22:24:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-19 22:24:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:24,631 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-19 22:24:24,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:24:24,631 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 214407641, now seen corresponding path program 1 times [2020-10-19 22:24:24,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:24,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384950235] [2020-10-19 22:24:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-19 22:24:24,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384950235] [2020-10-19 22:24:24,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:24,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:24,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870348656] [2020-10-19 22:24:24,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:24,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:24,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:24,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:24,703 INFO L87 Difference]: Start difference. First operand 2724 states and 4045 transitions. Second operand 3 states. [2020-10-19 22:24:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:25,020 INFO L93 Difference]: Finished difference Result 5522 states and 8175 transitions. [2020-10-19 22:24:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:25,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-10-19 22:24:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:25,036 INFO L225 Difference]: With dead ends: 5522 [2020-10-19 22:24:25,037 INFO L226 Difference]: Without dead ends: 2806 [2020-10-19 22:24:25,042 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 [2020-10-19 22:24:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-10-19 22:24:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2724. [2020-10-19 22:24:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-10-19 22:24:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3957 transitions. [2020-10-19 22:24:25,175 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3957 transitions. Word has length 164 [2020-10-19 22:24:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:25,176 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 3957 transitions. [2020-10-19 22:24:25,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3957 transitions. [2020-10-19 22:24:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-19 22:24:25,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:25,184 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:25,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:24:25,185 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:25,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1161445527, now seen corresponding path program 1 times [2020-10-19 22:24:25,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:25,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589677195] [2020-10-19 22:24:25,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-19 22:24:25,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589677195] [2020-10-19 22:24:25,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:25,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:25,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129977680] [2020-10-19 22:24:25,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:25,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:25,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:25,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:25,258 INFO L87 Difference]: Start difference. First operand 2724 states and 3957 transitions. Second operand 3 states. [2020-10-19 22:24:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:25,535 INFO L93 Difference]: Finished difference Result 5712 states and 8274 transitions. [2020-10-19 22:24:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:25,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-10-19 22:24:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:25,561 INFO L225 Difference]: With dead ends: 5712 [2020-10-19 22:24:25,566 INFO L226 Difference]: Without dead ends: 2996 [2020-10-19 22:24:25,571 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 [2020-10-19 22:24:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-10-19 22:24:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2840. [2020-10-19 22:24:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-10-19 22:24:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4045 transitions. [2020-10-19 22:24:25,717 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4045 transitions. Word has length 164 [2020-10-19 22:24:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:25,718 INFO L481 AbstractCegarLoop]: Abstraction has 2840 states and 4045 transitions. [2020-10-19 22:24:25,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4045 transitions. [2020-10-19 22:24:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-19 22:24:25,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:25,727 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:25,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:24:25,727 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2016709837, now seen corresponding path program 1 times [2020-10-19 22:24:25,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:25,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2920274] [2020-10-19 22:24:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:24:25,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2920274] [2020-10-19 22:24:25,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265203873] [2020-10-19 22:24:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:26,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:24:26,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-10-19 22:24:26,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:26,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-19 22:24:26,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099555321] [2020-10-19 22:24:26,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:26,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:26,241 INFO L87 Difference]: Start difference. First operand 2840 states and 4045 transitions. Second operand 3 states. [2020-10-19 22:24:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:26,540 INFO L93 Difference]: Finished difference Result 8485 states and 12072 transitions. [2020-10-19 22:24:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:26,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-10-19 22:24:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:26,569 INFO L225 Difference]: With dead ends: 8485 [2020-10-19 22:24:26,569 INFO L226 Difference]: Without dead ends: 5653 [2020-10-19 22:24:26,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2020-10-19 22:24:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5651. [2020-10-19 22:24:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5651 states. [2020-10-19 22:24:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 8034 transitions. [2020-10-19 22:24:26,896 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 8034 transitions. Word has length 172 [2020-10-19 22:24:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:26,896 INFO L481 AbstractCegarLoop]: Abstraction has 5651 states and 8034 transitions. [2020-10-19 22:24:26,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 8034 transitions. [2020-10-19 22:24:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-19 22:24:26,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:26,906 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:27,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:27,119 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:27,120 INFO L82 PathProgramCache]: Analyzing trace with hash 594356241, now seen corresponding path program 1 times [2020-10-19 22:24:27,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:27,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068572671] [2020-10-19 22:24:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:24:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068572671] [2020-10-19 22:24:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047492058] [2020-10-19 22:24:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:24:27,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-19 22:24:27,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:27,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-19 22:24:27,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674668824] [2020-10-19 22:24:27,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:27,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:27,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:27,478 INFO L87 Difference]: Start difference. First operand 5651 states and 8034 transitions. Second operand 3 states. [2020-10-19 22:24:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:27,914 INFO L93 Difference]: Finished difference Result 11837 states and 16799 transitions. [2020-10-19 22:24:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:27,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-10-19 22:24:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:27,926 INFO L225 Difference]: With dead ends: 11837 [2020-10-19 22:24:27,927 INFO L226 Difference]: Without dead ends: 5995 [2020-10-19 22:24:27,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2020-10-19 22:24:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 5835. [2020-10-19 22:24:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-10-19 22:24:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8266 transitions. [2020-10-19 22:24:28,175 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8266 transitions. Word has length 173 [2020-10-19 22:24:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:28,176 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 8266 transitions. [2020-10-19 22:24:28,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8266 transitions. [2020-10-19 22:24:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-19 22:24:28,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:28,186 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:28,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:28,400 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:28,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:28,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1057591537, now seen corresponding path program 1 times [2020-10-19 22:24:28,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:28,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752755559] [2020-10-19 22:24:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:24:28,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752755559] [2020-10-19 22:24:28,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592669259] [2020-10-19 22:24:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:28,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:24:28,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-19 22:24:28,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:28,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-19 22:24:28,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254290079] [2020-10-19 22:24:28,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:28,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:28,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:28,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:28,814 INFO L87 Difference]: Start difference. First operand 5835 states and 8266 transitions. Second operand 3 states. [2020-10-19 22:24:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:29,552 INFO L93 Difference]: Finished difference Result 10594 states and 14958 transitions. [2020-10-19 22:24:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:29,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-10-19 22:24:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:29,565 INFO L225 Difference]: With dead ends: 10594 [2020-10-19 22:24:29,566 INFO L226 Difference]: Without dead ends: 4616 [2020-10-19 22:24:29,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2020-10-19 22:24:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4472. [2020-10-19 22:24:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-10-19 22:24:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6325 transitions. [2020-10-19 22:24:29,785 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6325 transitions. Word has length 174 [2020-10-19 22:24:29,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:29,786 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6325 transitions. [2020-10-19 22:24:29,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:29,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6325 transitions. [2020-10-19 22:24:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-19 22:24:29,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:29,794 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:30,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:30,007 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:30,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1886384411, now seen corresponding path program 1 times [2020-10-19 22:24:30,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:30,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706013638] [2020-10-19 22:24:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-19 22:24:30,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706013638] [2020-10-19 22:24:30,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599090063] [2020-10-19 22:24:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:30,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:24:30,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-19 22:24:30,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:30,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-10-19 22:24:30,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86665032] [2020-10-19 22:24:30,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:30,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:24:30,344 INFO L87 Difference]: Start difference. First operand 4472 states and 6325 transitions. Second operand 3 states. [2020-10-19 22:24:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:30,503 INFO L93 Difference]: Finished difference Result 8871 states and 12552 transitions. [2020-10-19 22:24:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:30,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-10-19 22:24:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:30,513 INFO L225 Difference]: With dead ends: 8871 [2020-10-19 22:24:30,514 INFO L226 Difference]: Without dead ends: 4474 [2020-10-19 22:24:30,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:24:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-10-19 22:24:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4472. [2020-10-19 22:24:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-10-19 22:24:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6309 transitions. [2020-10-19 22:24:30,722 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6309 transitions. Word has length 177 [2020-10-19 22:24:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:30,723 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6309 transitions. [2020-10-19 22:24:30,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6309 transitions. [2020-10-19 22:24:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-19 22:24:30,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:30,731 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:30,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:30,944 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:30,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2144549849, now seen corresponding path program 1 times [2020-10-19 22:24:30,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:30,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488261146] [2020-10-19 22:24:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-19 22:24:31,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488261146] [2020-10-19 22:24:31,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445748764] [2020-10-19 22:24:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:31,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:24:31,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-19 22:24:31,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:31,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-10-19 22:24:31,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590713345] [2020-10-19 22:24:31,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:31,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:31,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:31,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:24:31,327 INFO L87 Difference]: Start difference. First operand 4472 states and 6309 transitions. Second operand 3 states. [2020-10-19 22:24:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:31,792 INFO L93 Difference]: Finished difference Result 7804 states and 10978 transitions. [2020-10-19 22:24:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:31,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-10-19 22:24:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:31,805 INFO L225 Difference]: With dead ends: 7804 [2020-10-19 22:24:31,805 INFO L226 Difference]: Without dead ends: 3299 [2020-10-19 22:24:31,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:24:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2020-10-19 22:24:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3179. [2020-10-19 22:24:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-19 22:24:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4468 transitions. [2020-10-19 22:24:31,989 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4468 transitions. Word has length 177 [2020-10-19 22:24:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:31,990 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4468 transitions. [2020-10-19 22:24:31,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4468 transitions. [2020-10-19 22:24:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-19 22:24:32,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:32,003 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:32,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-19 22:24:32,216 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:32,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:32,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1199573560, now seen corresponding path program 2 times [2020-10-19 22:24:32,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:32,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491132639] [2020-10-19 22:24:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 191 proven. 19 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:24:32,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491132639] [2020-10-19 22:24:32,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727081302] [2020-10-19 22:24:32,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:32,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:24:32,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:24:32,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:24:32,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-10-19 22:24:32,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:32,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-19 22:24:32,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844600479] [2020-10-19 22:24:32,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:32,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:32,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:32,517 INFO L87 Difference]: Start difference. First operand 3179 states and 4468 transitions. Second operand 3 states. [2020-10-19 22:24:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:32,801 INFO L93 Difference]: Finished difference Result 6415 states and 9031 transitions. [2020-10-19 22:24:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:32,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-10-19 22:24:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:32,808 INFO L225 Difference]: With dead ends: 6415 [2020-10-19 22:24:32,808 INFO L226 Difference]: Without dead ends: 3363 [2020-10-19 22:24:32,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-10-19 22:24:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3179. [2020-10-19 22:24:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-19 22:24:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4452 transitions. [2020-10-19 22:24:32,960 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4452 transitions. Word has length 182 [2020-10-19 22:24:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:32,960 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4452 transitions. [2020-10-19 22:24:32,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4452 transitions. [2020-10-19 22:24:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-19 22:24:32,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:32,966 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:33,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:33,180 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash -97142242, now seen corresponding path program 1 times [2020-10-19 22:24:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:33,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859376768] [2020-10-19 22:24:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:24:33,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859376768] [2020-10-19 22:24:33,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196814740] [2020-10-19 22:24:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:33,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:24:33,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-19 22:24:33,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:33,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-19 22:24:33,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241760318] [2020-10-19 22:24:33,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:33,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:33,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:33,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:33,513 INFO L87 Difference]: Start difference. First operand 3179 states and 4452 transitions. Second operand 3 states. [2020-10-19 22:24:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:33,928 INFO L93 Difference]: Finished difference Result 6311 states and 8831 transitions. [2020-10-19 22:24:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:33,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-10-19 22:24:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:33,939 INFO L225 Difference]: With dead ends: 6311 [2020-10-19 22:24:33,939 INFO L226 Difference]: Without dead ends: 3275 [2020-10-19 22:24:33,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:24:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-10-19 22:24:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3179. [2020-10-19 22:24:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-19 22:24:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4436 transitions. [2020-10-19 22:24:34,089 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4436 transitions. Word has length 184 [2020-10-19 22:24:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:34,090 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4436 transitions. [2020-10-19 22:24:34,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4436 transitions. [2020-10-19 22:24:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-19 22:24:34,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:34,096 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:34,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-19 22:24:34,310 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:34,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:34,311 INFO L82 PathProgramCache]: Analyzing trace with hash -301230506, now seen corresponding path program 3 times [2020-10-19 22:24:34,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:34,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600983117] [2020-10-19 22:24:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 196 proven. 27 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:24:34,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600983117] [2020-10-19 22:24:34,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691080930] [2020-10-19 22:24:34,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:24:34,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-19 22:24:34,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:24:34,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:24:34,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:24:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-19 22:24:34,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:24:34,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-10-19 22:24:34,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451245772] [2020-10-19 22:24:34,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:24:34,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:34,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:24:34,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:24:34,577 INFO L87 Difference]: Start difference. First operand 3179 states and 4436 transitions. Second operand 4 states. [2020-10-19 22:24:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:34,977 INFO L93 Difference]: Finished difference Result 6549 states and 9060 transitions. [2020-10-19 22:24:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:24:34,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-10-19 22:24:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:34,989 INFO L225 Difference]: With dead ends: 6549 [2020-10-19 22:24:34,989 INFO L226 Difference]: Without dead ends: 3561 [2020-10-19 22:24:34,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:24:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-10-19 22:24:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3171. [2020-10-19 22:24:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-10-19 22:24:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4420 transitions. [2020-10-19 22:24:35,203 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4420 transitions. Word has length 189 [2020-10-19 22:24:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:35,204 INFO L481 AbstractCegarLoop]: Abstraction has 3171 states and 4420 transitions. [2020-10-19 22:24:35,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:24:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4420 transitions. [2020-10-19 22:24:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-19 22:24:35,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:35,215 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:35,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-19 22:24:35,429 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2051917229, now seen corresponding path program 1 times [2020-10-19 22:24:35,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:35,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19329572] [2020-10-19 22:24:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:24:35,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:24:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:24:35,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:24:35,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:24:35,609 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:24:35,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 22:24:35,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:24:35 BoogieIcfgContainer [2020-10-19 22:24:35,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:24:35,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:24:35,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:24:35,740 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:24:35,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:15" (3/4) ... [2020-10-19 22:24:35,743 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:24:35,884 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:24:35,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:24:35,887 INFO L168 Benchmark]: Toolchain (without parser) took 22203.50 ms. Allocated memory was 41.9 MB in the beginning and 285.7 MB in the end (delta: 243.8 MB). Free memory was 19.3 MB in the beginning and 144.9 MB in the end (delta: -125.6 MB). Peak memory consumption was 118.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,887 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 31.5 MB. Free memory was 7.9 MB in the beginning and 7.8 MB in the end (delta: 63.0 kB). Peak memory consumption was 63.0 kB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.39 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 18.5 MB in the beginning and 11.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.22 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 11.9 MB in the beginning and 24.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,888 INFO L168 Benchmark]: Boogie Preprocessor took 41.54 ms. Allocated memory is still 43.5 MB. Free memory was 24.8 MB in the beginning and 22.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,889 INFO L168 Benchmark]: RCFGBuilder took 841.25 ms. Allocated memory was 43.5 MB in the beginning and 47.2 MB in the end (delta: 3.7 MB). Free memory was 22.1 MB in the beginning and 19.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,889 INFO L168 Benchmark]: TraceAbstraction took 20639.56 ms. Allocated memory was 47.2 MB in the beginning and 285.7 MB in the end (delta: 238.6 MB). Free memory was 19.3 MB in the beginning and 169.4 MB in the end (delta: -150.2 MB). Peak memory consumption was 88.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,889 INFO L168 Benchmark]: Witness Printer took 145.32 ms. Allocated memory is still 285.7 MB. Free memory was 169.4 MB in the beginning and 144.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:35,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 31.5 MB. Free memory was 7.9 MB in the beginning and 7.8 MB in the end (delta: 63.0 kB). Peak memory consumption was 63.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 453.39 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 18.5 MB in the beginning and 11.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 73.22 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 11.9 MB in the beginning and 24.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.54 ms. Allocated memory is still 43.5 MB. Free memory was 24.8 MB in the beginning and 22.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 841.25 ms. Allocated memory was 43.5 MB in the beginning and 47.2 MB in the end (delta: 3.7 MB). Free memory was 22.1 MB in the beginning and 19.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 20639.56 ms. Allocated memory was 47.2 MB in the beginning and 285.7 MB in the end (delta: 238.6 MB). Free memory was 19.3 MB in the beginning and 169.4 MB in the end (delta: -150.2 MB). Peak memory consumption was 88.4 MB. Max. memory is 14.3 GB. * Witness Printer took 145.32 ms. Allocated memory is still 285.7 MB. Free memory was 169.4 MB in the beginning and 144.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.3 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: [L637] int s ; [L638] int tmp ; [L642] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_ulong() ; [L70] unsigned long __cil_tmp59 ; [L71] int __cil_tmp60 ; [L72] unsigned long __cil_tmp61 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] tmp = __VERIFIER_nondet_int() [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND TRUE tmp___1 + 12288 [L92] COND TRUE tmp___2 + 16384 [L96] COND FALSE !(s__cert == 0) [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND TRUE s__state == 8464 [L273] s__shutdown = 0 [L274] ret = __VERIFIER_nondet_int() [L275] COND TRUE blastFlag == 0 [L276] blastFlag = 1 [L278] COND FALSE !(ret <= 0) [L281] got_new_session = 1 [L282] s__state = 8496 [L283] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND TRUE s__state == 8496 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L295] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 8512 [L303] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND TRUE s__state == 8512 [L308] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L309] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND TRUE __cil_tmp56 + 256UL [L311] skip = 1 [L319] s__state = 8528 [L320] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND TRUE s__state == 8528 [L324] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L325] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L327] __cil_tmp57 = (unsigned long )s__options [L328] COND TRUE __cil_tmp57 + 2097152UL [L329] s__s3__tmp__use_rsa_tmp = 1 [L334] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(ret <= 0) [L379] s__state = 8544 [L380] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND TRUE s__state == 8544 [L384] COND TRUE s__verify_mode + 1 [L385] COND FALSE !(s__session__peer != 0) [L396] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L397] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L398] COND FALSE !(__cil_tmp61 + 256UL) [L408] s__s3__tmp__cert_request = 1 [L409] ret = __VERIFIER_nondet_int() [L410] COND FALSE !(ret <= 0) [L413] s__state = 8448 [L414] s__s3__tmp__next_state___0 = 8576 [L415] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND TRUE s__state == 8448 [L436] COND FALSE !(num1 > 0L) [L445] s__state = s__s3__tmp__next_state___0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND FALSE !(s__state == 8448) [L169] COND TRUE s__state == 8576 [L449] ret = __VERIFIER_nondet_int() [L450] COND FALSE !(ret <= 0) [L453] COND FALSE !(ret == 2) [L456] ret = __VERIFIER_nondet_int() [L457] COND FALSE !(ret <= 0) [L460] s__init_num = 0 [L461] s__state = 8592 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND TRUE state == 8576 [L605] COND TRUE s__state == 8592 [L606] COND TRUE tmp___1 != -12288 [L607] COND TRUE tmp___2 != -16384 [L608] COND TRUE __cil_tmp56 != 4294967040 [L609] COND TRUE __cil_tmp58 != 4294967294 [L610] COND TRUE tmp___7 != 1024 [L611] COND TRUE tmp___7 != 512 [L3] __assert_fail("0", "s3_srvr_11.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 150 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.4s, OverallIterations: 38, TraceHistogramMax: 7, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6459 SDtfs, 5740 SDslu, 2456 SDs, 0 SdLazy, 3268 SolverSat, 1244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1549 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5835occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 37 MinimizatonAttempts, 1605 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 5451 NumberOfCodeBlocks, 5159 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 5214 ConstructedInterpolants, 0 QuantifiedInterpolants, 1228424 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2643 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 45 InterpolantComputations, 37 PerfectInterpolantSequences, 6988/7241 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...