./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.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/bitvector/s3_clnt_2.BV.c.cil-2a.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 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:20,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:21:20,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:21:20,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:21:20,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:21:20,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:21:20,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:21:20,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:21:20,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:21:20,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:21:20,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:21:20,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:21:20,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:21:20,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:21:20,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:21:20,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:21:20,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:21:20,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:21:20,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:21:20,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:21:20,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:21:20,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:21:20,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:21:20,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:21:20,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:21:20,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:21:20,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:21:20,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:21:20,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:21:20,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:21:20,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:20,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:20,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:20,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:20,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:20,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:20,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:20,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:20,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:20,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:20,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:20,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:21:20,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:20,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:20,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:20,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:20,521 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:20,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:20,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:20,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:21:20,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:20,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:20,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:20,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:20,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:20,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:20,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:20,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:20,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:20,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:20,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:20,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:20,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:20,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:20,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:20,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:20,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:20,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:21:20,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:21:20,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:20,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:20,527 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 -> 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 [2020-10-19 22:21:20,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:20,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:20,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:20,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:20,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:20,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-19 22:21:20,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d980cd7/2ca9abcdff794349939b00593f52f5ce/FLAGa1a8dcf71 [2020-10-19 22:21:21,279 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:21,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-19 22:21:21,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d980cd7/2ca9abcdff794349939b00593f52f5ce/FLAGa1a8dcf71 [2020-10-19 22:21:21,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d980cd7/2ca9abcdff794349939b00593f52f5ce [2020-10-19 22:21:21,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:21,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:21,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:21,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:21,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:21,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:21" (1/1) ... [2020-10-19 22:21:21,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d540f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:21, skipping insertion in model container [2020-10-19 22:21:21,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:21" (1/1) ... [2020-10-19 22:21:21,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:21,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:22,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:22,286 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:22,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:22,407 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:22,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22 WrapperNode [2020-10-19 22:21:22,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:22,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:22,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:22,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:22,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:22,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:22,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:22,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:22,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (1/1) ... [2020-10-19 22:21:22,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:22,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:22,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:22,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:22,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (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 22:21:22,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:21:22,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:22,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:22,766 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:21:23,307 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-19 22:21:23,307 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-19 22:21:23,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:23,319 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:23,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:23 BoogieIcfgContainer [2020-10-19 22:21:23,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:23,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:23,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:23,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:23,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:21" (1/3) ... [2020-10-19 22:21:23,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639b55d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:23, skipping insertion in model container [2020-10-19 22:21:23,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:22" (2/3) ... [2020-10-19 22:21:23,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639b55d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:23, skipping insertion in model container [2020-10-19 22:21:23,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:23" (3/3) ... [2020-10-19 22:21:23,338 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-10-19 22:21:23,351 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:23,358 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:23,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:23,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:23,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:23,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:23,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:23,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:23,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:23,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:23,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-19 22:21:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:21:23,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:23,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:23,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:23,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-10-19 22:21:23,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:23,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913964381] [2020-10-19 22:21:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:23,658 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 22:21:23,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913964381] [2020-10-19 22:21:23,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:23,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:23,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769674038] [2020-10-19 22:21:23,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:23,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:23,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:23,686 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-10-19 22:21:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:23,968 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2020-10-19 22:21:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:23,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:21:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:23,983 INFO L225 Difference]: With dead ends: 247 [2020-10-19 22:21:23,984 INFO L226 Difference]: Without dead ends: 112 [2020-10-19 22:21:23,988 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 22:21:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-19 22:21:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-19 22:21:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 22:21:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-10-19 22:21:24,038 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-10-19 22:21:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:24,038 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-10-19 22:21:24,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-10-19 22:21:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:21:24,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:24,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:24,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:21:24,042 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-10-19 22:21:24,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:24,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631101779] [2020-10-19 22:21:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:24,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631101779] [2020-10-19 22:21:24,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:24,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:24,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910609109] [2020-10-19 22:21:24,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:24,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:24,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:24,159 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-10-19 22:21:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:24,326 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-10-19 22:21:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:24,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-19 22:21:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:24,328 INFO L225 Difference]: With dead ends: 233 [2020-10-19 22:21:24,328 INFO L226 Difference]: Without dead ends: 131 [2020-10-19 22:21:24,330 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 22:21:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-19 22:21:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-10-19 22:21:24,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-19 22:21:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-10-19 22:21:24,342 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-10-19 22:21:24,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:24,342 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-10-19 22:21:24,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-10-19 22:21:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 22:21:24,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:24,344 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-19 22:21:24,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:21:24,345 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:24,345 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-10-19 22:21:24,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:24,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504295381] [2020-10-19 22:21:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:24,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504295381] [2020-10-19 22:21:24,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:24,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:24,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938011025] [2020-10-19 22:21:24,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:24,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:24,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:24,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:24,481 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-10-19 22:21:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:24,627 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-10-19 22:21:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:24,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-10-19 22:21:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:24,630 INFO L225 Difference]: With dead ends: 265 [2020-10-19 22:21:24,631 INFO L226 Difference]: Without dead ends: 148 [2020-10-19 22:21:24,632 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 22:21:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-19 22:21:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-10-19 22:21:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-19 22:21:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-10-19 22:21:24,644 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-10-19 22:21:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:24,645 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-10-19 22:21:24,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-10-19 22:21:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-19 22:21:24,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:24,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-19 22:21:24,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:21:24,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-10-19 22:21:24,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:24,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115036435] [2020-10-19 22:21:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:24,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115036435] [2020-10-19 22:21:24,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:24,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:24,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583701684] [2020-10-19 22:21:24,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:24,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:24,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:24,771 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 3 states. [2020-10-19 22:21:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:25,005 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2020-10-19 22:21:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:25,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-10-19 22:21:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:25,008 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:21:25,009 INFO L226 Difference]: Without dead ends: 193 [2020-10-19 22:21:25,010 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 22:21:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-19 22:21:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2020-10-19 22:21:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-19 22:21:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2020-10-19 22:21:25,022 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2020-10-19 22:21:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:25,022 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2020-10-19 22:21:25,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2020-10-19 22:21:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-19 22:21:25,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:25,025 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-19 22:21:25,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:21:25,026 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1434615126, now seen corresponding path program 1 times [2020-10-19 22:21:25,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:25,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917234132] [2020-10-19 22:21:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:25,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917234132] [2020-10-19 22:21:25,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:25,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:25,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288094729] [2020-10-19 22:21:25,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:25,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:25,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:25,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:25,091 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand 3 states. [2020-10-19 22:21:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:25,249 INFO L93 Difference]: Finished difference Result 383 states and 548 transitions. [2020-10-19 22:21:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:25,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-10-19 22:21:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:25,252 INFO L225 Difference]: With dead ends: 383 [2020-10-19 22:21:25,252 INFO L226 Difference]: Without dead ends: 208 [2020-10-19 22:21:25,253 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 22:21:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-19 22:21:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2020-10-19 22:21:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-19 22:21:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2020-10-19 22:21:25,263 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2020-10-19 22:21:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:25,264 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2020-10-19 22:21:25,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2020-10-19 22:21:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-19 22:21:25,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:25,266 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-19 22:21:25,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:21:25,267 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1023824768, now seen corresponding path program 1 times [2020-10-19 22:21:25,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:25,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382696564] [2020-10-19 22:21:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:21:25,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382696564] [2020-10-19 22:21:25,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:25,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:25,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072861939] [2020-10-19 22:21:25,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:25,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:25,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:25,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:25,360 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand 3 states. [2020-10-19 22:21:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:25,514 INFO L93 Difference]: Finished difference Result 422 states and 598 transitions. [2020-10-19 22:21:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:25,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-10-19 22:21:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:25,520 INFO L225 Difference]: With dead ends: 422 [2020-10-19 22:21:25,520 INFO L226 Difference]: Without dead ends: 228 [2020-10-19 22:21:25,521 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 22:21:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-19 22:21:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2020-10-19 22:21:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-19 22:21:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2020-10-19 22:21:25,534 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2020-10-19 22:21:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:25,537 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2020-10-19 22:21:25,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2020-10-19 22:21:25,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:21:25,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:25,543 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:25,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:21:25,544 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-10-19 22:21:25,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:25,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58817] [2020-10-19 22:21:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:21:25,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58817] [2020-10-19 22:21:25,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:25,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:25,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411548138] [2020-10-19 22:21:25,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:25,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:25,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:25,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:25,660 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand 3 states. [2020-10-19 22:21:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:25,707 INFO L93 Difference]: Finished difference Result 652 states and 903 transitions. [2020-10-19 22:21:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:25,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-10-19 22:21:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:25,712 INFO L225 Difference]: With dead ends: 652 [2020-10-19 22:21:25,713 INFO L226 Difference]: Without dead ends: 437 [2020-10-19 22:21:25,714 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 22:21:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-19 22:21:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2020-10-19 22:21:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-19 22:21:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 600 transitions. [2020-10-19 22:21:25,729 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 600 transitions. Word has length 103 [2020-10-19 22:21:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:25,730 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 600 transitions. [2020-10-19 22:21:25,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 600 transitions. [2020-10-19 22:21:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:21:25,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:25,732 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:25,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:21:25,733 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:25,734 INFO L82 PathProgramCache]: Analyzing trace with hash -713589126, now seen corresponding path program 1 times [2020-10-19 22:21:25,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:25,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309173239] [2020-10-19 22:21:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-19 22:21:25,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309173239] [2020-10-19 22:21:25,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:25,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:25,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698454977] [2020-10-19 22:21:25,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:25,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:25,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:25,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:25,814 INFO L87 Difference]: Start difference. First operand 437 states and 600 transitions. Second operand 3 states. [2020-10-19 22:21:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:25,852 INFO L93 Difference]: Finished difference Result 885 states and 1214 transitions. [2020-10-19 22:21:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:25,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-10-19 22:21:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:25,857 INFO L225 Difference]: With dead ends: 885 [2020-10-19 22:21:25,857 INFO L226 Difference]: Without dead ends: 458 [2020-10-19 22:21:25,858 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 22:21:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-19 22:21:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2020-10-19 22:21:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-19 22:21:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 627 transitions. [2020-10-19 22:21:25,875 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 627 transitions. Word has length 103 [2020-10-19 22:21:25,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:25,876 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 627 transitions. [2020-10-19 22:21:25,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 627 transitions. [2020-10-19 22:21:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-19 22:21:25,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:25,879 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:25,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:21:25,880 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1034569449, now seen corresponding path program 1 times [2020-10-19 22:21:25,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:25,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497777077] [2020-10-19 22:21:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-19 22:21:25,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497777077] [2020-10-19 22:21:25,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:25,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:25,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825730417] [2020-10-19 22:21:25,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:25,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:25,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:25,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:25,960 INFO L87 Difference]: Start difference. First operand 458 states and 627 transitions. Second operand 3 states. [2020-10-19 22:21:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:25,992 INFO L93 Difference]: Finished difference Result 932 states and 1274 transitions. [2020-10-19 22:21:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:25,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-10-19 22:21:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:25,997 INFO L225 Difference]: With dead ends: 932 [2020-10-19 22:21:25,998 INFO L226 Difference]: Without dead ends: 484 [2020-10-19 22:21:25,999 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 22:21:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-19 22:21:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-10-19 22:21:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-19 22:21:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 660 transitions. [2020-10-19 22:21:26,020 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 660 transitions. Word has length 104 [2020-10-19 22:21:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:26,020 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 660 transitions. [2020-10-19 22:21:26,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 660 transitions. [2020-10-19 22:21:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-19 22:21:26,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:26,023 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:26,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:21:26,024 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-10-19 22:21:26,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:26,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906292632] [2020-10-19 22:21:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-19 22:21:26,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906292632] [2020-10-19 22:21:26,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:26,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:26,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263217895] [2020-10-19 22:21:26,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:26,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:26,123 INFO L87 Difference]: Start difference. First operand 484 states and 660 transitions. Second operand 3 states. [2020-10-19 22:21:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:26,171 INFO L93 Difference]: Finished difference Result 699 states and 957 transitions. [2020-10-19 22:21:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:26,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-19 22:21:26,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:26,175 INFO L225 Difference]: With dead ends: 699 [2020-10-19 22:21:26,176 INFO L226 Difference]: Without dead ends: 697 [2020-10-19 22:21:26,177 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 22:21:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-19 22:21:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2020-10-19 22:21:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-19 22:21:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 955 transitions. [2020-10-19 22:21:26,196 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 955 transitions. Word has length 105 [2020-10-19 22:21:26,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:26,197 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 955 transitions. [2020-10-19 22:21:26,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 955 transitions. [2020-10-19 22:21:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-19 22:21:26,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:26,200 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 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] [2020-10-19 22:21:26,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:21:26,201 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-10-19 22:21:26,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:26,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578904877] [2020-10-19 22:21:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-19 22:21:26,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578904877] [2020-10-19 22:21:26,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:26,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:26,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403890246] [2020-10-19 22:21:26,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:26,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:26,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:26,290 INFO L87 Difference]: Start difference. First operand 697 states and 955 transitions. Second operand 3 states. [2020-10-19 22:21:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:26,497 INFO L93 Difference]: Finished difference Result 1508 states and 2127 transitions. [2020-10-19 22:21:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:26,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-10-19 22:21:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:26,504 INFO L225 Difference]: With dead ends: 1508 [2020-10-19 22:21:26,505 INFO L226 Difference]: Without dead ends: 844 [2020-10-19 22:21:26,506 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 22:21:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-19 22:21:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 814. [2020-10-19 22:21:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-19 22:21:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1144 transitions. [2020-10-19 22:21:26,536 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1144 transitions. Word has length 173 [2020-10-19 22:21:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:26,537 INFO L481 AbstractCegarLoop]: Abstraction has 814 states and 1144 transitions. [2020-10-19 22:21:26,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1144 transitions. [2020-10-19 22:21:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-19 22:21:26,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:26,544 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 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] [2020-10-19 22:21:26,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:21:26,545 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -598161639, now seen corresponding path program 2 times [2020-10-19 22:21:26,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:26,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165339927] [2020-10-19 22:21:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-19 22:21:26,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165339927] [2020-10-19 22:21:26,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:26,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:26,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370219834] [2020-10-19 22:21:26,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:26,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:26,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:26,669 INFO L87 Difference]: Start difference. First operand 814 states and 1144 transitions. Second operand 3 states. [2020-10-19 22:21:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:26,972 INFO L93 Difference]: Finished difference Result 1870 states and 2708 transitions. [2020-10-19 22:21:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:26,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-10-19 22:21:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:26,981 INFO L225 Difference]: With dead ends: 1870 [2020-10-19 22:21:26,982 INFO L226 Difference]: Without dead ends: 1041 [2020-10-19 22:21:26,984 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 22:21:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-19 22:21:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1003. [2020-10-19 22:21:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-19 22:21:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1396 transitions. [2020-10-19 22:21:27,022 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1396 transitions. Word has length 185 [2020-10-19 22:21:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:27,022 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1396 transitions. [2020-10-19 22:21:27,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1396 transitions. [2020-10-19 22:21:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-19 22:21:27,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:27,027 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 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 22:21:27,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:21:27,027 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:27,028 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-10-19 22:21:27,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:27,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077110128] [2020-10-19 22:21:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-19 22:21:27,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077110128] [2020-10-19 22:21:27,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:27,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:27,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343568606] [2020-10-19 22:21:27,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:27,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:27,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:27,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:27,545 INFO L87 Difference]: Start difference. First operand 1003 states and 1396 transitions. Second operand 3 states. [2020-10-19 22:21:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:27,589 INFO L93 Difference]: Finished difference Result 2282 states and 3180 transitions. [2020-10-19 22:21:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:27,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-10-19 22:21:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:27,597 INFO L225 Difference]: With dead ends: 2282 [2020-10-19 22:21:27,598 INFO L226 Difference]: Without dead ends: 1315 [2020-10-19 22:21:27,600 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 22:21:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-19 22:21:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2020-10-19 22:21:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-19 22:21:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1828 transitions. [2020-10-19 22:21:27,642 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1828 transitions. Word has length 194 [2020-10-19 22:21:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:27,643 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1828 transitions. [2020-10-19 22:21:27,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1828 transitions. [2020-10-19 22:21:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-19 22:21:27,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:27,648 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:27,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:21:27,649 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:27,649 INFO L82 PathProgramCache]: Analyzing trace with hash -915330113, now seen corresponding path program 1 times [2020-10-19 22:21:27,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:27,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810459357] [2020-10-19 22:21:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-19 22:21:27,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810459357] [2020-10-19 22:21:27,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:27,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:27,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550444392] [2020-10-19 22:21:27,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:27,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:27,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:27,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:27,747 INFO L87 Difference]: Start difference. First operand 1315 states and 1828 transitions. Second operand 3 states. [2020-10-19 22:21:27,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:27,817 INFO L93 Difference]: Finished difference Result 3583 states and 5032 transitions. [2020-10-19 22:21:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:27,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-10-19 22:21:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:27,829 INFO L225 Difference]: With dead ends: 3583 [2020-10-19 22:21:27,829 INFO L226 Difference]: Without dead ends: 2325 [2020-10-19 22:21:27,831 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 22:21:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2020-10-19 22:21:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2020-10-19 22:21:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-10-19 22:21:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3265 transitions. [2020-10-19 22:21:27,903 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3265 transitions. Word has length 196 [2020-10-19 22:21:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:27,904 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 3265 transitions. [2020-10-19 22:21:27,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3265 transitions. [2020-10-19 22:21:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-19 22:21:27,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:27,909 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 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, 1] [2020-10-19 22:21:27,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:21:27,909 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:27,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:27,910 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2020-10-19 22:21:27,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:27,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590187934] [2020-10-19 22:21:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:27,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:28,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:28,193 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:21:28,194 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:28,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:21:28,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:28 BoogieIcfgContainer [2020-10-19 22:21:28,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:28,342 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:28,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:28,342 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:28,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:23" (3/4) ... [2020-10-19 22:21:28,346 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:21:28,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:28,349 INFO L168 Benchmark]: Toolchain (without parser) took 6540.35 ms. Allocated memory was 35.7 MB in the beginning and 109.1 MB in the end (delta: 73.4 MB). Free memory was 14.9 MB in the beginning and 57.3 MB in the end (delta: -42.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,349 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 9.8 MB in the beginning and 9.8 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.67 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.0 MB in the beginning and 21.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.19 ms. Allocated memory is still 44.6 MB. Free memory was 21.2 MB in the beginning and 18.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,351 INFO L168 Benchmark]: Boogie Preprocessor took 84.31 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 18.2 MB in the beginning and 27.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,352 INFO L168 Benchmark]: RCFGBuilder took 764.35 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 27.1 MB in the beginning and 12.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,353 INFO L168 Benchmark]: TraceAbstraction took 5019.01 ms. Allocated memory was 47.2 MB in the beginning and 109.1 MB in the end (delta: 61.9 MB). Free memory was 11.5 MB in the beginning and 58.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,354 INFO L168 Benchmark]: Witness Printer took 4.77 ms. Allocated memory is still 109.1 MB. Free memory was 58.7 MB in the beginning and 57.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:28,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 9.8 MB in the beginning and 9.8 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 593.67 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.0 MB in the beginning and 21.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 63.19 ms. Allocated memory is still 44.6 MB. Free memory was 21.2 MB in the beginning and 18.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 84.31 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 18.2 MB in the beginning and 27.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 764.35 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 27.1 MB in the beginning and 12.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5019.01 ms. Allocated memory was 47.2 MB in the beginning and 109.1 MB in the end (delta: 61.9 MB). Free memory was 11.5 MB in the beginning and 58.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 14.3 GB. * Witness Printer took 4.77 ms. Allocated memory is still 109.1 MB. Free memory was 58.7 MB in the beginning and 57.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 357. Possible FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2634 SDtfs, 812 SDslu, 1502 SDs, 0 SdLazy, 896 SolverSat, 173 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 93 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1686 NumberOfCodeBlocks, 1686 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1476 ConstructedInterpolants, 0 QuantifiedInterpolants, 447550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2791/2791 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:30,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:21:30,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:21:30,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:21:30,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:21:30,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:21:30,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:21:30,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:21:30,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:21:30,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:21:30,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:21:30,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:21:30,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:21:30,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:21:30,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:21:30,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:21:30,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:21:30,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:21:30,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:21:30,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:21:30,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:21:30,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:21:30,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:21:30,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:21:30,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:21:30,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:21:30,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:21:30,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:21:30,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:21:30,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:21:30,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:30,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:30,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:30,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:30,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:30,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:30,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:30,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:30,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:30,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:30,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:30,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:21:30,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:30,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:30,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:30,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:30,578 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:30,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:30,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:30,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:30,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:30,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:30,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:30,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:30,581 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:21:30,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:21:30,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:30,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:30,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:30,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:30,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:30,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:30,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:30,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:30,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:30,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:30,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:30,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:30,586 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:21:30,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:21:30,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:30,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:30,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:21:30,587 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 [2020-10-19 22:21:30,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:30,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:30,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:30,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:30,863 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:30,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-19 22:21:30,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b89fb06/70000b9e7c2e437ab1dbc843c6a0afd8/FLAG027c41c26 [2020-10-19 22:21:31,560 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:31,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-19 22:21:31,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b89fb06/70000b9e7c2e437ab1dbc843c6a0afd8/FLAG027c41c26 [2020-10-19 22:21:31,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b89fb06/70000b9e7c2e437ab1dbc843c6a0afd8 [2020-10-19 22:21:31,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:31,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:31,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:31,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:31,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:31,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:31" (1/1) ... [2020-10-19 22:21:31,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485f8614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:31, skipping insertion in model container [2020-10-19 22:21:31,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:31" (1/1) ... [2020-10-19 22:21:31,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:31,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:32,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:32,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:32,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:32,567 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:32,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32 WrapperNode [2020-10-19 22:21:32,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:32,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:32,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:32,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:32,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:32,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:32,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:32,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:32,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (1/1) ... [2020-10-19 22:21:32,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:32,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:32,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:32,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:32,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (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 22:21:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:21:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:32,907 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:21:33,474 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-19 22:21:33,475 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-19 22:21:33,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:33,492 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:33,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:33 BoogieIcfgContainer [2020-10-19 22:21:33,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:33,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:33,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:33,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:33,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:31" (1/3) ... [2020-10-19 22:21:33,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3680b37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:33, skipping insertion in model container [2020-10-19 22:21:33,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:32" (2/3) ... [2020-10-19 22:21:33,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3680b37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:33, skipping insertion in model container [2020-10-19 22:21:33,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:33" (3/3) ... [2020-10-19 22:21:33,520 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-10-19 22:21:33,543 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:33,558 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:33,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:33,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:33,606 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:33,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:33,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:33,606 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:33,606 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:33,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:33,607 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-19 22:21:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:21:33,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:33,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:33,637 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:33,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-10-19 22:21:33,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:33,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320198444] [2020-10-19 22:21:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:33,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:33,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:33,830 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 22:21:33,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:33,841 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 22:21:33,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320198444] [2020-10-19 22:21:33,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:33,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:33,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328490977] [2020-10-19 22:21:33,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:33,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:33,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:33,867 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-10-19 22:21:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:34,081 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2020-10-19 22:21:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:34,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:21:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:34,098 INFO L225 Difference]: With dead ends: 247 [2020-10-19 22:21:34,098 INFO L226 Difference]: Without dead ends: 112 [2020-10-19 22:21:34,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 22:21:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-19 22:21:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-19 22:21:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 22:21:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-10-19 22:21:34,157 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-10-19 22:21:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:34,157 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-10-19 22:21:34,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-10-19 22:21:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:21:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:34,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:34,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:21:34,374 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:34,375 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-10-19 22:21:34,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:34,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929593561] [2020-10-19 22:21:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:34,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:34,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:34,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:34,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929593561] [2020-10-19 22:21:34,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:34,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:34,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261229967] [2020-10-19 22:21:34,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:34,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:34,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:34,501 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-10-19 22:21:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:34,690 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-10-19 22:21:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:34,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-19 22:21:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:34,693 INFO L225 Difference]: With dead ends: 233 [2020-10-19 22:21:34,693 INFO L226 Difference]: Without dead ends: 131 [2020-10-19 22:21:34,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 22:21:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-19 22:21:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-10-19 22:21:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-19 22:21:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-10-19 22:21:34,708 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-10-19 22:21:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:34,708 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-10-19 22:21:34,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-10-19 22:21:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 22:21:34,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:34,710 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-19 22:21:34,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:21:34,924 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-10-19 22:21:34,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:34,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792972894] [2020-10-19 22:21:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:35,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:35,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:35,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:21:35,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792972894] [2020-10-19 22:21:35,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:35,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:35,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831951329] [2020-10-19 22:21:35,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:35,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:35,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:35,089 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-10-19 22:21:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:35,296 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-10-19 22:21:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:35,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-10-19 22:21:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:35,299 INFO L225 Difference]: With dead ends: 265 [2020-10-19 22:21:35,299 INFO L226 Difference]: Without dead ends: 148 [2020-10-19 22:21:35,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 22:21:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-19 22:21:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-10-19 22:21:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-19 22:21:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-10-19 22:21:35,322 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-10-19 22:21:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:35,323 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-10-19 22:21:35,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-10-19 22:21:35,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-19 22:21:35,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:35,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-19 22:21:35,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:21:35,532 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:35,533 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-10-19 22:21:35,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:35,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592417869] [2020-10-19 22:21:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:35,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:35,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:35,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:35,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592417869] [2020-10-19 22:21:35,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:35,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:21:35,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666774777] [2020-10-19 22:21:35,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:21:35,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:35,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:21:35,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:35,683 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 4 states. [2020-10-19 22:21:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:35,993 INFO L93 Difference]: Finished difference Result 349 states and 534 transitions. [2020-10-19 22:21:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:35,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-19 22:21:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:35,996 INFO L225 Difference]: With dead ends: 349 [2020-10-19 22:21:35,996 INFO L226 Difference]: Without dead ends: 215 [2020-10-19 22:21:35,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-19 22:21:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2020-10-19 22:21:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-19 22:21:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2020-10-19 22:21:36,012 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 67 [2020-10-19 22:21:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:36,013 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2020-10-19 22:21:36,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:21:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2020-10-19 22:21:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:21:36,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:36,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-19 22:21:36,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:21:36,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:36,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1528022105, now seen corresponding path program 1 times [2020-10-19 22:21:36,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:36,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088104930] [2020-10-19 22:21:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:36,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:36,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:36,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:21:36,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088104930] [2020-10-19 22:21:36,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:36,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:36,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091734704] [2020-10-19 22:21:36,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:36,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:36,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:36,355 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand 3 states. [2020-10-19 22:21:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:36,506 INFO L93 Difference]: Finished difference Result 427 states and 620 transitions. [2020-10-19 22:21:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:36,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:21:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:36,508 INFO L225 Difference]: With dead ends: 427 [2020-10-19 22:21:36,508 INFO L226 Difference]: Without dead ends: 230 [2020-10-19 22:21:36,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 22:21:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-19 22:21:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2020-10-19 22:21:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-19 22:21:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 321 transitions. [2020-10-19 22:21:36,538 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 321 transitions. Word has length 68 [2020-10-19 22:21:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:36,538 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 321 transitions. [2020-10-19 22:21:36,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 321 transitions. [2020-10-19 22:21:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:21:36,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:36,541 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-19 22:21:36,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:21:36,755 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1678422895, now seen corresponding path program 1 times [2020-10-19 22:21:36,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:36,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353696093] [2020-10-19 22:21:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:36,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:36,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:21:36,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:21:36,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353696093] [2020-10-19 22:21:36,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:36,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:36,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696006146] [2020-10-19 22:21:36,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:36,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:36,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:36,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:36,893 INFO L87 Difference]: Start difference. First operand 226 states and 321 transitions. Second operand 3 states. [2020-10-19 22:21:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:37,069 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2020-10-19 22:21:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:37,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-10-19 22:21:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:37,076 INFO L225 Difference]: With dead ends: 466 [2020-10-19 22:21:37,077 INFO L226 Difference]: Without dead ends: 250 [2020-10-19 22:21:37,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 22:21:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-19 22:21:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2020-10-19 22:21:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-19 22:21:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2020-10-19 22:21:37,097 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 84 [2020-10-19 22:21:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:37,099 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2020-10-19 22:21:37,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2020-10-19 22:21:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:21:37,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:37,107 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:37,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 22:21:37,323 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:37,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-10-19 22:21:37,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:37,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032856330] [2020-10-19 22:21:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:37,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:37,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:21:37,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:21:37,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032856330] [2020-10-19 22:21:37,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:37,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:21:37,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401132660] [2020-10-19 22:21:37,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:21:37,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:21:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:37,490 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand 4 states. [2020-10-19 22:21:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:37,568 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2020-10-19 22:21:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:37,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:21:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:37,575 INFO L225 Difference]: With dead ends: 743 [2020-10-19 22:21:37,575 INFO L226 Difference]: Without dead ends: 506 [2020-10-19 22:21:37,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-19 22:21:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-10-19 22:21:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-19 22:21:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 702 transitions. [2020-10-19 22:21:37,613 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 702 transitions. Word has length 103 [2020-10-19 22:21:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:37,614 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 702 transitions. [2020-10-19 22:21:37,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:21:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 702 transitions. [2020-10-19 22:21:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:21:37,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:37,624 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:37,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 22:21:37,843 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:37,843 INFO L82 PathProgramCache]: Analyzing trace with hash -847602632, now seen corresponding path program 1 times [2020-10-19 22:21:37,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:37,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510717894] [2020-10-19 22:21:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:37,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:37,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-19 22:21:37,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-19 22:21:37,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510717894] [2020-10-19 22:21:37,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:37,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:37,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022325657] [2020-10-19 22:21:37,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:37,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:37,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:37,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:37,978 INFO L87 Difference]: Start difference. First operand 506 states and 702 transitions. Second operand 3 states. [2020-10-19 22:21:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:38,026 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2020-10-19 22:21:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:38,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-10-19 22:21:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:38,034 INFO L225 Difference]: With dead ends: 1023 [2020-10-19 22:21:38,034 INFO L226 Difference]: Without dead ends: 527 [2020-10-19 22:21:38,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 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 22:21:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-19 22:21:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2020-10-19 22:21:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-10-19 22:21:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 729 transitions. [2020-10-19 22:21:38,059 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 729 transitions. Word has length 103 [2020-10-19 22:21:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:38,059 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 729 transitions. [2020-10-19 22:21:38,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:38,060 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 729 transitions. [2020-10-19 22:21:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-19 22:21:38,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:38,063 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:38,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,272 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1168582955, now seen corresponding path program 1 times [2020-10-19 22:21:38,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:38,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769402405] [2020-10-19 22:21:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:38,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:38,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-19 22:21:38,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-19 22:21:38,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769402405] [2020-10-19 22:21:38,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:38,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:21:38,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165656910] [2020-10-19 22:21:38,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:38,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:38,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:38,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:38,430 INFO L87 Difference]: Start difference. First operand 527 states and 729 transitions. Second operand 3 states. [2020-10-19 22:21:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:38,467 INFO L93 Difference]: Finished difference Result 1070 states and 1478 transitions. [2020-10-19 22:21:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:38,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-10-19 22:21:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:38,472 INFO L225 Difference]: With dead ends: 1070 [2020-10-19 22:21:38,472 INFO L226 Difference]: Without dead ends: 553 [2020-10-19 22:21:38,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 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 22:21:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-19 22:21:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-10-19 22:21:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-19 22:21:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 762 transitions. [2020-10-19 22:21:38,494 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 762 transitions. Word has length 104 [2020-10-19 22:21:38,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:38,495 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 762 transitions. [2020-10-19 22:21:38,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 762 transitions. [2020-10-19 22:21:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-19 22:21:38,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:38,498 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:38,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,711 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:38,712 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-10-19 22:21:38,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:38,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145887622] [2020-10-19 22:21:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:38,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:38,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-19 22:21:38,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-19 22:21:38,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145887622] [2020-10-19 22:21:38,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:38,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:21:38,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137627667] [2020-10-19 22:21:38,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:21:38,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:21:38,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:38,857 INFO L87 Difference]: Start difference. First operand 553 states and 762 transitions. Second operand 4 states. [2020-10-19 22:21:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:38,937 INFO L93 Difference]: Finished difference Result 1520 states and 2113 transitions. [2020-10-19 22:21:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:38,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-19 22:21:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:38,943 INFO L225 Difference]: With dead ends: 1520 [2020-10-19 22:21:38,943 INFO L226 Difference]: Without dead ends: 1003 [2020-10-19 22:21:38,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2020-10-19 22:21:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2020-10-19 22:21:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-19 22:21:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2020-10-19 22:21:38,978 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 105 [2020-10-19 22:21:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:38,978 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2020-10-19 22:21:38,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:21:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2020-10-19 22:21:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-19 22:21:38,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:38,983 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 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] [2020-10-19 22:21:39,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,196 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:39,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-10-19 22:21:39,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:39,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315657960] [2020-10-19 22:21:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:39,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:39,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-19 22:21:39,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-19 22:21:39,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315657960] [2020-10-19 22:21:39,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:39,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:21:39,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360435496] [2020-10-19 22:21:39,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:21:39,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:39,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:21:39,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:39,369 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 transitions. Second operand 4 states. [2020-10-19 22:21:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:39,690 INFO L93 Difference]: Finished difference Result 2091 states and 2938 transitions. [2020-10-19 22:21:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:39,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-19 22:21:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:39,700 INFO L225 Difference]: With dead ends: 2091 [2020-10-19 22:21:39,700 INFO L226 Difference]: Without dead ends: 1124 [2020-10-19 22:21:39,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-10-19 22:21:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1095. [2020-10-19 22:21:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-19 22:21:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1500 transitions. [2020-10-19 22:21:39,757 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1500 transitions. Word has length 173 [2020-10-19 22:21:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:39,758 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1500 transitions. [2020-10-19 22:21:39,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:21:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1500 transitions. [2020-10-19 22:21:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-19 22:21:39,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:39,763 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 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 22:21:39,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 22:21:39,977 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:39,978 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-10-19 22:21:39,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:39,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042047647] [2020-10-19 22:21:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:40,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:40,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-19 22:21:40,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:40,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042047647] [2020-10-19 22:21:40,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:40,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [723201427] [2020-10-19 22:21:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:21:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:40,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:40,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-19 22:21:40,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:40,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775047353] [2020-10-19 22:21:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:40,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-19 22:21:40,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:40,638 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:40,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:40,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 22:21:40,639 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 22:21:40,639 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:41,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:41,376 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 22:21:41,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:41 BoogieIcfgContainer [2020-10-19 22:21:41,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:41,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:41,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:41,378 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:41,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:33" (3/4) ... [2020-10-19 22:21:41,384 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:21:41,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:41,388 INFO L168 Benchmark]: Toolchain (without parser) took 9484.11 ms. Allocated memory was 40.9 MB in the beginning and 91.8 MB in the end (delta: 50.9 MB). Free memory was 19.0 MB in the beginning and 4.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 65.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,389 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.5 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.32 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.0 MB in the beginning and 12.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.43 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 12.0 MB in the beginning and 25.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,404 INFO L168 Benchmark]: Boogie Preprocessor took 42.04 ms. Allocated memory is still 43.5 MB. Free memory was 25.4 MB in the beginning and 23.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,406 INFO L168 Benchmark]: RCFGBuilder took 817.11 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 23.1 MB in the beginning and 10.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,407 INFO L168 Benchmark]: TraceAbstraction took 7864.59 ms. Allocated memory was 46.7 MB in the beginning and 91.8 MB in the end (delta: 45.1 MB). Free memory was 28.8 MB in the beginning and 5.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 68.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,408 INFO L168 Benchmark]: Witness Printer took 7.48 ms. Allocated memory is still 91.8 MB. Free memory was 5.5 MB in the beginning and 4.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:41,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.5 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 659.32 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.0 MB in the beginning and 12.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 66.43 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 12.0 MB in the beginning and 25.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 42.04 ms. Allocated memory is still 43.5 MB. Free memory was 25.4 MB in the beginning and 23.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 817.11 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 23.1 MB in the beginning and 10.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 7864.59 ms. Allocated memory was 46.7 MB in the beginning and 91.8 MB in the end (delta: 45.1 MB). Free memory was 28.8 MB in the beginning and 5.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 68.4 MB. Max. memory is 14.3 GB. * Witness Printer took 7.48 ms. Allocated memory is still 91.8 MB. Free memory was 5.5 MB in the beginning and 4.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL [L304] skip = 1 [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 7.6s, OverallIterations: 12, TraceHistogramMax: 11, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1978 SDtfs, 1028 SDslu, 1402 SDs, 0 SdLazy, 926 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1812 GetRequests, 1797 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 917 NumberOfCodeBlocks, 917 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1812 ConstructedInterpolants, 0 QuantifiedInterpolants, 286528 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1652 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 2382/2382 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...