./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_security.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/psyco/psyco_security.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 d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:00:46,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:00:46,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:00:46,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:00:46,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:00:46,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:00:46,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:00:46,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:00:46,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:00:46,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:00:46,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:00:46,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:00:46,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:00:46,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:00:46,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:00:46,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:00:46,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:00:46,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:00:46,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:00:46,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:00:46,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:00:46,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:00:46,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:00:46,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:00:46,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:00:46,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:00:46,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:00:46,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:00:46,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:00:46,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:00:46,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:00:46,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:00:46,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:00:46,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:00:46,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:00:46,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:00:46,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:00:46,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:00:46,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:00:46,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:00:46,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:00:46,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:00:46,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:00:46,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:00:46,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:00:46,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:00:46,520 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:00:46,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:00:46,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:00:46,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:00:46,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:00:46,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:00:46,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:00:46,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:00:46,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:00:46,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:00:46,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:00:46,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:00:46,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:00:46,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:00:46,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:00:46,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:00:46,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:00:46,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:00:46,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:00:46,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:00:46,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:00:46,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:00:46,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:00:46,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:00:46,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:00:46,530 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 -> d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb [2020-10-20 00:00:46,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:00:46,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:00:46,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:00:46,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:00:46,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:00:46,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_security.c [2020-10-20 00:00:46,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145aa5cb1/8ee2b3b97c5740e481d582bb7b2b9068/FLAG190c123bf [2020-10-20 00:00:47,468 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:00:47,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_security.c [2020-10-20 00:00:47,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145aa5cb1/8ee2b3b97c5740e481d582bb7b2b9068/FLAG190c123bf [2020-10-20 00:00:47,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145aa5cb1/8ee2b3b97c5740e481d582bb7b2b9068 [2020-10-20 00:00:47,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:00:47,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:00:47,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:00:47,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:00:47,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:00:47,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:00:47" (1/1) ... [2020-10-20 00:00:47,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fae96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:47, skipping insertion in model container [2020-10-20 00:00:47,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:00:47" (1/1) ... [2020-10-20 00:00:47,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:00:47,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:00:48,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:00:48,111 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:00:48,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:00:48,172 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:00:48,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48 WrapperNode [2020-10-20 00:00:48,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:00:48,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:00:48,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:00:48,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:00:48,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:00:48,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:00:48,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:00:48,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:00:48,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (1/1) ... [2020-10-20 00:00:48,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:00:48,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:00:48,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:00:48,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:00:48,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (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 [2020-10-20 00:00:48,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:00:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:00:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:00:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:00:48,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:00:48,792 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 00:00:48,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:00:48 BoogieIcfgContainer [2020-10-20 00:00:48,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:00:48,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:00:48,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:00:48,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:00:48,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:00:47" (1/3) ... [2020-10-20 00:00:48,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b030ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:00:48, skipping insertion in model container [2020-10-20 00:00:48,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:48" (2/3) ... [2020-10-20 00:00:48,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b030ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:00:48, skipping insertion in model container [2020-10-20 00:00:48,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:00:48" (3/3) ... [2020-10-20 00:00:48,806 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-20 00:00:48,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:00:48,829 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:00:48,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:00:48,907 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:00:48,907 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:00:48,907 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:00:48,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:00:48,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:00:48,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:00:48,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:00:48,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:00:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-10-20 00:00:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:00:48,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:48,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:48,934 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash 352571364, now seen corresponding path program 1 times [2020-10-20 00:00:48,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:48,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142394509] [2020-10-20 00:00:48,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:49,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142394509] [2020-10-20 00:00:49,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:49,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:00:49,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704040612] [2020-10-20 00:00:49,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:00:49,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:00:49,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:00:49,132 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2020-10-20 00:00:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:49,165 INFO L93 Difference]: Finished difference Result 155 states and 293 transitions. [2020-10-20 00:00:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:00:49,167 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:00:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:49,180 INFO L225 Difference]: With dead ends: 155 [2020-10-20 00:00:49,180 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 00:00:49,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:00:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 00:00:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 00:00:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 00:00:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2020-10-20 00:00:49,237 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 109 transitions. Word has length 9 [2020-10-20 00:00:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:49,237 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 109 transitions. [2020-10-20 00:00:49,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:00:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 109 transitions. [2020-10-20 00:00:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:00:49,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:49,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:49,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:00:49,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697708, now seen corresponding path program 1 times [2020-10-20 00:00:49,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:49,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097449052] [2020-10-20 00:00:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:49,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097449052] [2020-10-20 00:00:49,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:49,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:49,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880361288] [2020-10-20 00:00:49,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:49,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:49,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:49,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:49,347 INFO L87 Difference]: Start difference. First operand 74 states and 109 transitions. Second operand 3 states. [2020-10-20 00:00:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:49,474 INFO L93 Difference]: Finished difference Result 149 states and 220 transitions. [2020-10-20 00:00:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:49,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 00:00:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:49,476 INFO L225 Difference]: With dead ends: 149 [2020-10-20 00:00:49,477 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 00:00:49,480 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 [2020-10-20 00:00:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 00:00:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-20 00:00:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-20 00:00:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 112 transitions. [2020-10-20 00:00:49,501 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 112 transitions. Word has length 10 [2020-10-20 00:00:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:49,501 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 112 transitions. [2020-10-20 00:00:49,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 112 transitions. [2020-10-20 00:00:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:00:49,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:49,505 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:49,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:00:49,506 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash 658032583, now seen corresponding path program 1 times [2020-10-20 00:00:49,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:49,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002152802] [2020-10-20 00:00:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:49,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002152802] [2020-10-20 00:00:49,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:49,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:49,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857090507] [2020-10-20 00:00:49,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:49,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:49,612 INFO L87 Difference]: Start difference. First operand 77 states and 112 transitions. Second operand 3 states. [2020-10-20 00:00:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:49,689 INFO L93 Difference]: Finished difference Result 157 states and 229 transitions. [2020-10-20 00:00:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:49,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-20 00:00:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:49,692 INFO L225 Difference]: With dead ends: 157 [2020-10-20 00:00:49,692 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 00:00:49,693 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 [2020-10-20 00:00:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 00:00:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-20 00:00:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-20 00:00:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-10-20 00:00:49,702 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 15 [2020-10-20 00:00:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:49,702 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-10-20 00:00:49,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-10-20 00:00:49,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 00:00:49,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:49,704 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:49,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:00:49,704 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2066489199, now seen corresponding path program 1 times [2020-10-20 00:00:49,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:49,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653402982] [2020-10-20 00:00:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:49,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653402982] [2020-10-20 00:00:49,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:49,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:00:49,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128834072] [2020-10-20 00:00:49,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:00:49,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:49,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:00:49,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:00:49,758 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 4 states. [2020-10-20 00:00:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:49,965 INFO L93 Difference]: Finished difference Result 254 states and 362 transitions. [2020-10-20 00:00:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:00:49,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-20 00:00:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:49,968 INFO L225 Difference]: With dead ends: 254 [2020-10-20 00:00:49,968 INFO L226 Difference]: Without dead ends: 164 [2020-10-20 00:00:49,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:00:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-20 00:00:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2020-10-20 00:00:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-20 00:00:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2020-10-20 00:00:49,981 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 18 [2020-10-20 00:00:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:49,981 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2020-10-20 00:00:49,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:00:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2020-10-20 00:00:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 00:00:49,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:49,983 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:49,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:00:49,984 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:49,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1261026174, now seen corresponding path program 1 times [2020-10-20 00:00:49,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:49,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387795149] [2020-10-20 00:00:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:50,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387795149] [2020-10-20 00:00:50,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:50,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:50,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288019302] [2020-10-20 00:00:50,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:50,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:50,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:50,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:50,080 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand 3 states. [2020-10-20 00:00:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:50,119 INFO L93 Difference]: Finished difference Result 219 states and 335 transitions. [2020-10-20 00:00:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:50,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 00:00:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:50,122 INFO L225 Difference]: With dead ends: 219 [2020-10-20 00:00:50,122 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 00:00:50,123 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 [2020-10-20 00:00:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 00:00:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-20 00:00:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 00:00:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2020-10-20 00:00:50,132 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 22 [2020-10-20 00:00:50,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:50,132 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2020-10-20 00:00:50,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2020-10-20 00:00:50,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 00:00:50,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:50,134 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:50,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 00:00:50,135 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:50,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1712893632, now seen corresponding path program 1 times [2020-10-20 00:00:50,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:50,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559088198] [2020-10-20 00:00:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:50,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559088198] [2020-10-20 00:00:50,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:50,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:50,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667975504] [2020-10-20 00:00:50,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:50,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:50,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:50,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:50,172 INFO L87 Difference]: Start difference. First operand 93 states and 138 transitions. Second operand 3 states. [2020-10-20 00:00:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:50,251 INFO L93 Difference]: Finished difference Result 179 states and 266 transitions. [2020-10-20 00:00:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:50,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-20 00:00:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:50,253 INFO L225 Difference]: With dead ends: 179 [2020-10-20 00:00:50,253 INFO L226 Difference]: Without dead ends: 105 [2020-10-20 00:00:50,254 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 [2020-10-20 00:00:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-20 00:00:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2020-10-20 00:00:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 00:00:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2020-10-20 00:00:50,262 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 26 [2020-10-20 00:00:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:50,263 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2020-10-20 00:00:50,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2020-10-20 00:00:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 00:00:50,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:50,265 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:50,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 00:00:50,265 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1584038971, now seen corresponding path program 1 times [2020-10-20 00:00:50,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:50,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343716145] [2020-10-20 00:00:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:50,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343716145] [2020-10-20 00:00:50,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:50,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:50,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203669277] [2020-10-20 00:00:50,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:50,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:50,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:50,301 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand 3 states. [2020-10-20 00:00:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:50,349 INFO L93 Difference]: Finished difference Result 162 states and 225 transitions. [2020-10-20 00:00:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:50,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 00:00:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:50,351 INFO L225 Difference]: With dead ends: 162 [2020-10-20 00:00:50,351 INFO L226 Difference]: Without dead ends: 88 [2020-10-20 00:00:50,352 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 [2020-10-20 00:00:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-20 00:00:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-20 00:00:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 00:00:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2020-10-20 00:00:50,358 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 27 [2020-10-20 00:00:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:50,359 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2020-10-20 00:00:50,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2020-10-20 00:00:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 00:00:50,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:50,361 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:50,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 00:00:50,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:50,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1447684816, now seen corresponding path program 1 times [2020-10-20 00:00:50,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:50,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848556712] [2020-10-20 00:00:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:50,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848556712] [2020-10-20 00:00:50,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:50,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:50,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993114682] [2020-10-20 00:00:50,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:50,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:50,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:50,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:50,394 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand 3 states. [2020-10-20 00:00:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:50,444 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2020-10-20 00:00:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:50,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 00:00:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:50,446 INFO L225 Difference]: With dead ends: 133 [2020-10-20 00:00:50,446 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 00:00:50,447 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 [2020-10-20 00:00:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 00:00:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-20 00:00:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 00:00:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-10-20 00:00:50,451 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 27 [2020-10-20 00:00:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:50,452 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-10-20 00:00:50,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-10-20 00:00:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 00:00:50,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:50,454 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-20 00:00:50,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 00:00:50,454 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash -583473182, now seen corresponding path program 1 times [2020-10-20 00:00:50,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:50,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512009379] [2020-10-20 00:00:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:50,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512009379] [2020-10-20 00:00:50,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:50,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:50,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174775182] [2020-10-20 00:00:50,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:50,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:50,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:50,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:50,488 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 3 states. [2020-10-20 00:00:50,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:50,514 INFO L93 Difference]: Finished difference Result 107 states and 139 transitions. [2020-10-20 00:00:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:50,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-20 00:00:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:50,516 INFO L225 Difference]: With dead ends: 107 [2020-10-20 00:00:50,516 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:00:50,516 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 [2020-10-20 00:00:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:00:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:00:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:00:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:00:50,518 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-10-20 00:00:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:50,518 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:00:50,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:00:50,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:00:50,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 00:00:50,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:00:50,615 INFO L274 CegarLoopResult]: For program point L250(lines 250 265) no Hoare annotation was computed. [2020-10-20 00:00:50,615 INFO L274 CegarLoopResult]: For program point L118(lines 118 133) no Hoare annotation was computed. [2020-10-20 00:00:50,615 INFO L274 CegarLoopResult]: For program point L52(lines 52 63) no Hoare annotation was computed. [2020-10-20 00:00:50,615 INFO L274 CegarLoopResult]: For program point L366(lines 366 381) no Hoare annotation was computed. [2020-10-20 00:00:50,616 INFO L274 CegarLoopResult]: For program point L234(lines 234 249) no Hoare annotation was computed. [2020-10-20 00:00:50,616 INFO L274 CegarLoopResult]: For program point L168(lines 168 179) no Hoare annotation was computed. [2020-10-20 00:00:50,616 INFO L274 CegarLoopResult]: For program point L102(lines 102 117) no Hoare annotation was computed. [2020-10-20 00:00:50,616 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-20 00:00:50,617 INFO L270 CegarLoopResult]: At program point L383(lines 24 387) the Hoare annotation is: (or (and (<= 4 ULTIMATE.start_main_~q~0) (= 3 ULTIMATE.start_main_~this_state~0)) (= ULTIMATE.start_main_~q~0 0) (and (= ULTIMATE.start_main_~q~0 3) (= 2 ULTIMATE.start_main_~this_state~0)) (and (= ULTIMATE.start_main_~this_state~0 0) (= ULTIMATE.start_main_~q~0 2))) [2020-10-20 00:00:50,617 INFO L274 CegarLoopResult]: For program point L350(lines 350 365) no Hoare annotation was computed. [2020-10-20 00:00:50,617 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:00:50,618 INFO L274 CegarLoopResult]: For program point L218(lines 218 233) no Hoare annotation was computed. [2020-10-20 00:00:50,618 INFO L274 CegarLoopResult]: For program point L185(lines 185 284) no Hoare annotation was computed. [2020-10-20 00:00:50,618 INFO L274 CegarLoopResult]: For program point L152(lines 152 163) no Hoare annotation was computed. [2020-10-20 00:00:50,618 INFO L274 CegarLoopResult]: For program point L334(lines 334 349) no Hoare annotation was computed. [2020-10-20 00:00:50,618 INFO L274 CegarLoopResult]: For program point L268(lines 268 279) no Hoare annotation was computed. [2020-10-20 00:00:50,619 INFO L274 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-10-20 00:00:50,619 INFO L274 CegarLoopResult]: For program point L136(lines 136 147) no Hoare annotation was computed. [2020-10-20 00:00:50,619 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-20 00:00:50,619 INFO L274 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-10-20 00:00:50,620 INFO L274 CegarLoopResult]: For program point L285(lines 285 384) no Hoare annotation was computed. [2020-10-20 00:00:50,620 INFO L274 CegarLoopResult]: For program point L252(lines 252 263) no Hoare annotation was computed. [2020-10-20 00:00:50,620 INFO L274 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-10-20 00:00:50,620 INFO L274 CegarLoopResult]: For program point L120(lines 120 131) no Hoare annotation was computed. [2020-10-20 00:00:50,620 INFO L274 CegarLoopResult]: For program point L368(lines 368 379) no Hoare annotation was computed. [2020-10-20 00:00:50,621 INFO L274 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-10-20 00:00:50,621 INFO L274 CegarLoopResult]: For program point L236(lines 236 247) no Hoare annotation was computed. [2020-10-20 00:00:50,621 INFO L274 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2020-10-20 00:00:50,621 INFO L274 CegarLoopResult]: For program point L352(lines 352 363) no Hoare annotation was computed. [2020-10-20 00:00:50,621 INFO L274 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-10-20 00:00:50,622 INFO L274 CegarLoopResult]: For program point L220(lines 220 231) no Hoare annotation was computed. [2020-10-20 00:00:50,622 INFO L274 CegarLoopResult]: For program point L88(lines 88 90) no Hoare annotation was computed. [2020-10-20 00:00:50,622 INFO L274 CegarLoopResult]: For program point L336(lines 336 347) no Hoare annotation was computed. [2020-10-20 00:00:50,622 INFO L274 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-10-20 00:00:50,622 INFO L274 CegarLoopResult]: For program point L72(lines 72 74) no Hoare annotation was computed. [2020-10-20 00:00:50,623 INFO L274 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-10-20 00:00:50,623 INFO L274 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-10-20 00:00:50,623 INFO L274 CegarLoopResult]: For program point L56(lines 56 58) no Hoare annotation was computed. [2020-10-20 00:00:50,623 INFO L274 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-10-20 00:00:50,623 INFO L274 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-10-20 00:00:50,624 INFO L274 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-10-20 00:00:50,624 INFO L274 CegarLoopResult]: For program point L156(lines 156 158) no Hoare annotation was computed. [2020-10-20 00:00:50,624 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (and (not (= 2 ULTIMATE.start_main_~this_state~0)) (= ULTIMATE.start_main_~q~0 0)) (and (<= 4 ULTIMATE.start_main_~q~0) (= 3 ULTIMATE.start_main_~this_state~0))) [2020-10-20 00:00:50,624 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2020-10-20 00:00:50,625 INFO L274 CegarLoopResult]: For program point L272(lines 272 274) no Hoare annotation was computed. [2020-10-20 00:00:50,625 INFO L274 CegarLoopResult]: For program point L140(lines 140 142) no Hoare annotation was computed. [2020-10-20 00:00:50,625 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:00:50,625 INFO L274 CegarLoopResult]: For program point L256(lines 256 258) no Hoare annotation was computed. [2020-10-20 00:00:50,625 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-20 00:00:50,626 INFO L274 CegarLoopResult]: For program point L372(lines 372 374) no Hoare annotation was computed. [2020-10-20 00:00:50,626 INFO L274 CegarLoopResult]: For program point L240(lines 240 242) no Hoare annotation was computed. [2020-10-20 00:00:50,626 INFO L274 CegarLoopResult]: For program point L108(lines 108 110) no Hoare annotation was computed. [2020-10-20 00:00:50,627 INFO L274 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2020-10-20 00:00:50,627 INFO L274 CegarLoopResult]: For program point L224(lines 224 226) no Hoare annotation was computed. [2020-10-20 00:00:50,627 INFO L270 CegarLoopResult]: At program point L373(lines 15 392) the Hoare annotation is: false [2020-10-20 00:00:50,627 INFO L274 CegarLoopResult]: For program point L340(lines 340 342) no Hoare annotation was computed. [2020-10-20 00:00:50,628 INFO L274 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-10-20 00:00:50,628 INFO L274 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-10-20 00:00:50,628 INFO L274 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-10-20 00:00:50,628 INFO L274 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-10-20 00:00:50,629 INFO L274 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-10-20 00:00:50,629 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:00:50,629 INFO L274 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-10-20 00:00:50,629 INFO L274 CegarLoopResult]: For program point L30(lines 30 45) no Hoare annotation was computed. [2020-10-20 00:00:50,630 INFO L277 CegarLoopResult]: At program point L15(lines 15 392) the Hoare annotation is: true [2020-10-20 00:00:50,630 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-10-20 00:00:50,630 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:00:50,630 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-20 00:00:50,631 INFO L274 CegarLoopResult]: For program point L82(lines 82 97) no Hoare annotation was computed. [2020-10-20 00:00:50,631 INFO L274 CegarLoopResult]: For program point L49(lines 49 100) no Hoare annotation was computed. [2020-10-20 00:00:50,631 INFO L274 CegarLoopResult]: For program point L66(lines 66 81) no Hoare annotation was computed. [2020-10-20 00:00:50,631 INFO L274 CegarLoopResult]: For program point L50(lines 50 65) no Hoare annotation was computed. [2020-10-20 00:00:50,641 INFO L274 CegarLoopResult]: For program point L166(lines 166 181) no Hoare annotation was computed. [2020-10-20 00:00:50,642 INFO L274 CegarLoopResult]: For program point L150(lines 150 165) no Hoare annotation was computed. [2020-10-20 00:00:50,642 INFO L274 CegarLoopResult]: For program point L84(lines 84 95) no Hoare annotation was computed. [2020-10-20 00:00:50,642 INFO L274 CegarLoopResult]: For program point L266(lines 266 281) no Hoare annotation was computed. [2020-10-20 00:00:50,642 INFO L274 CegarLoopResult]: For program point L134(lines 134 149) no Hoare annotation was computed. [2020-10-20 00:00:50,642 INFO L274 CegarLoopResult]: For program point L101(lines 101 184) no Hoare annotation was computed. [2020-10-20 00:00:50,643 INFO L274 CegarLoopResult]: For program point L68(lines 68 79) no Hoare annotation was computed. [2020-10-20 00:00:50,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:00:50 BoogieIcfgContainer [2020-10-20 00:00:50,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:00:50,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:00:50,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:00:50,667 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:00:50,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:00:48" (3/4) ... [2020-10-20 00:00:50,673 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:00:50,690 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:00:50,691 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:00:50,691 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:00:50,691 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:00:50,738 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:00:50,739 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:00:50,741 INFO L168 Benchmark]: Toolchain (without parser) took 2996.73 ms. Allocated memory was 43.0 MB in the beginning and 57.1 MB in the end (delta: 14.2 MB). Free memory was 21.5 MB in the beginning and 35.9 MB in the end (delta: -14.5 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:00:50,747 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.1 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.41 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 20.6 MB in the beginning and 19.7 MB in the end (delta: 872.5 kB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.36 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 17.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,750 INFO L168 Benchmark]: Boogie Preprocessor took 38.59 ms. Allocated memory is still 43.5 MB. Free memory was 17.4 MB in the beginning and 15.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,751 INFO L168 Benchmark]: RCFGBuilder took 524.65 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 15.6 MB in the beginning and 22.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,753 INFO L168 Benchmark]: TraceAbstraction took 1870.36 ms. Allocated memory was 45.6 MB in the beginning and 57.1 MB in the end (delta: 11.5 MB). Free memory was 22.3 MB in the beginning and 38.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,754 INFO L168 Benchmark]: Witness Printer took 71.91 ms. Allocated memory is still 57.1 MB. Free memory was 38.9 MB in the beginning and 35.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:50,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.1 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 422.41 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 20.6 MB in the beginning and 19.7 MB in the end (delta: 872.5 kB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 56.36 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 17.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.59 ms. Allocated memory is still 43.5 MB. Free memory was 17.4 MB in the beginning and 15.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 524.65 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 15.6 MB in the beginning and 22.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1870.36 ms. Allocated memory was 45.6 MB in the beginning and 57.1 MB in the end (delta: 11.5 MB). Free memory was 22.3 MB in the beginning and 38.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 14.3 GB. * Witness Printer took 71.91 ms. Allocated memory is still 57.1 MB. Free memory was 38.9 MB in the beginning and 35.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (!(2 == this_state) && q == 0) || (4 <= q && 3 == this_state) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((4 <= q && 3 == this_state) || q == 0) || (q == 3 && 2 == this_state)) || (this_state == 0 && q == 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 880 SDtfs, 271 SDslu, 515 SDs, 0 SdLazy, 271 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 43 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 6349 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 43/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...