./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.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/recursive-simple/fibo_2calls_5-1.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 61245002f662171c4f63dbacefaa0e216ea9fe3a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:47:25,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:47:25,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:47:25,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:47:25,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:47:25,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:47:25,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:47:25,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:47:25,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:47:25,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:47:25,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:47:25,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:47:25,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:47:25,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:47:25,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:47:25,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:47:25,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:47:25,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:47:25,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:47:25,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:47:25,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:47:25,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:47:25,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:47:25,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:47:25,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:47:25,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:47:25,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:47:25,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:47:25,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:47:25,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:47:25,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:47:25,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:47:25,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:47:25,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:47:25,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:47:25,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:47:25,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:47:25,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:47:25,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:47:25,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:47:25,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:47:25,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:47:25,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:47:25,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:47:25,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:47:25,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:47:25,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:47:25,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:47:25,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:47:25,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:47:25,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:47:25,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:47:25,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:47:25,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:47:25,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:47:25,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:47:25,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:47:25,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:47:25,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:47:25,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:47:25,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:47:25,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:47:25,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:47:25,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:47:25,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:47:25,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:47:25,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:47:25,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:47:25,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:47:25,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:47:25,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:47:25,486 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 -> 61245002f662171c4f63dbacefaa0e216ea9fe3a [2020-10-20 01:47:25,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:47:25,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:47:25,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:47:25,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:47:25,721 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:47:25,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-10-20 01:47:25,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f0f3680/9de35e1c3d0c4936bf21669e3547e28a/FLAGda6ad7328 [2020-10-20 01:47:26,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:47:26,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-10-20 01:47:26,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f0f3680/9de35e1c3d0c4936bf21669e3547e28a/FLAGda6ad7328 [2020-10-20 01:47:26,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f0f3680/9de35e1c3d0c4936bf21669e3547e28a [2020-10-20 01:47:26,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:47:26,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:47:26,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:47:26,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:47:26,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:47:26,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:47:26" (1/1) ... [2020-10-20 01:47:26,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e08bd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:26, skipping insertion in model container [2020-10-20 01:47:26,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:47:26" (1/1) ... [2020-10-20 01:47:26,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:47:26,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:47:26,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:47:26,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:47:26,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:47:27,007 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:47:27,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27 WrapperNode [2020-10-20 01:47:27,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:47:27,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:47:27,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:47:27,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:47:27,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:47:27,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:47:27,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:47:27,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:47:27,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (1/1) ... [2020-10-20 01:47:27,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:47:27,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:47:27,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:47:27,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:47:27,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (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 01:47:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:47:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-20 01:47:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-20 01:47:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:47:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-20 01:47:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-20 01:47:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:47:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:47:27,423 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:47:27,424 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 01:47:27,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:47:27 BoogieIcfgContainer [2020-10-20 01:47:27,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:47:27,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:47:27,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:47:27,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:47:27,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:47:26" (1/3) ... [2020-10-20 01:47:27,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77126bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:47:27, skipping insertion in model container [2020-10-20 01:47:27,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:47:27" (2/3) ... [2020-10-20 01:47:27,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77126bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:47:27, skipping insertion in model container [2020-10-20 01:47:27,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:47:27" (3/3) ... [2020-10-20 01:47:27,455 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-10-20 01:47:27,483 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:47:27,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:47:27,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:47:27,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:47:27,537 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:47:27,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:47:27,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:47:27,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:47:27,538 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:47:27,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:47:27,539 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:47:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-20 01:47:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 01:47:27,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:27,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:27,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2146840844, now seen corresponding path program 1 times [2020-10-20 01:47:27,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:27,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358495162] [2020-10-20 01:47:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:27,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:27,786 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 01:47:27,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358495162] [2020-10-20 01:47:27,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:47:27,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:47:27,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695187468] [2020-10-20 01:47:27,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:47:27,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:27,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:47:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:47:27,813 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-10-20 01:47:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:27,924 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-20 01:47:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:47:27,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 01:47:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:27,936 INFO L225 Difference]: With dead ends: 40 [2020-10-20 01:47:27,937 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 01:47:27,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:47:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 01:47:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-20 01:47:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 01:47:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-10-20 01:47:27,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2020-10-20 01:47:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:27,991 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-20 01:47:27,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:47:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-10-20 01:47:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 01:47:27,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:27,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:27,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:47:27,994 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1412337332, now seen corresponding path program 1 times [2020-10-20 01:47:27,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:27,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198779594] [2020-10-20 01:47:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:47:28,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198779594] [2020-10-20 01:47:28,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:47:28,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:47:28,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122794882] [2020-10-20 01:47:28,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:47:28,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:28,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:47:28,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:47:28,067 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states. [2020-10-20 01:47:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:28,131 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-10-20 01:47:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:47:28,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 01:47:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:28,134 INFO L225 Difference]: With dead ends: 33 [2020-10-20 01:47:28,135 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 01:47:28,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:47:28,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 01:47:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-20 01:47:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 01:47:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-10-20 01:47:28,154 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2020-10-20 01:47:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:28,155 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-20 01:47:28,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:47:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-10-20 01:47:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:47:28,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:28,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:28,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:47:28,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:28,159 INFO L82 PathProgramCache]: Analyzing trace with hash -888595213, now seen corresponding path program 1 times [2020-10-20 01:47:28,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:28,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78942649] [2020-10-20 01:47:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-20 01:47:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 01:47:28,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78942649] [2020-10-20 01:47:28,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928910371] [2020-10-20 01:47:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:28,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:47:28,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 01:47:28,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:28,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-10-20 01:47:28,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544469476] [2020-10-20 01:47:28,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 01:47:28,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:28,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 01:47:28,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:47:28,512 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 10 states. [2020-10-20 01:47:28,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:28,702 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2020-10-20 01:47:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:47:28,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-20 01:47:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:28,705 INFO L225 Difference]: With dead ends: 55 [2020-10-20 01:47:28,705 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 01:47:28,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-20 01:47:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 01:47:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-20 01:47:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 01:47:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-10-20 01:47:28,716 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2020-10-20 01:47:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:28,716 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-10-20 01:47:28,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 01:47:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-10-20 01:47:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:47:28,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:28,719 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] [2020-10-20 01:47:28,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 01:47:28,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:28,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:28,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1502460051, now seen corresponding path program 1 times [2020-10-20 01:47:28,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:28,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556908556] [2020-10-20 01:47:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 01:47:29,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556908556] [2020-10-20 01:47:29,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386124728] [2020-10-20 01:47:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:47:29,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 01:47:29,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:29,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-20 01:47:29,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757240637] [2020-10-20 01:47:29,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 01:47:29,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 01:47:29,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:47:29,199 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 9 states. [2020-10-20 01:47:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:29,389 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2020-10-20 01:47:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:47:29,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-20 01:47:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:29,394 INFO L225 Difference]: With dead ends: 51 [2020-10-20 01:47:29,394 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 01:47:29,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:47:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 01:47:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-20 01:47:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 01:47:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2020-10-20 01:47:29,409 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2020-10-20 01:47:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:29,410 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2020-10-20 01:47:29,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 01:47:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2020-10-20 01:47:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 01:47:29,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:29,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:29,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:29,628 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:29,629 INFO L82 PathProgramCache]: Analyzing trace with hash -801267146, now seen corresponding path program 1 times [2020-10-20 01:47:29,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292598901] [2020-10-20 01:47:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-20 01:47:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-20 01:47:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 01:47:29,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292598901] [2020-10-20 01:47:29,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040165441] [2020-10-20 01:47:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:29,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 01:47:29,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-20 01:47:29,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:29,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-10-20 01:47:29,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194944056] [2020-10-20 01:47:29,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 01:47:29,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:29,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 01:47:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:47:29,887 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 11 states. [2020-10-20 01:47:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:30,142 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-20 01:47:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 01:47:30,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-20 01:47:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:30,145 INFO L225 Difference]: With dead ends: 105 [2020-10-20 01:47:30,146 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 01:47:30,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-20 01:47:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 01:47:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-20 01:47:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-20 01:47:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2020-10-20 01:47:30,162 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2020-10-20 01:47:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:30,162 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2020-10-20 01:47:30,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 01:47:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2020-10-20 01:47:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 01:47:30,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:30,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:30,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:30,380 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1583643682, now seen corresponding path program 1 times [2020-10-20 01:47:30,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:30,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645077718] [2020-10-20 01:47:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-20 01:47:30,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645077718] [2020-10-20 01:47:30,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031182085] [2020-10-20 01:47:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:30,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 01:47:30,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 01:47:30,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:30,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-10-20 01:47:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507396097] [2020-10-20 01:47:30,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 01:47:30,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 01:47:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:47:30,709 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand 13 states. [2020-10-20 01:47:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:31,189 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2020-10-20 01:47:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 01:47:31,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-20 01:47:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:31,194 INFO L225 Difference]: With dead ends: 177 [2020-10-20 01:47:31,194 INFO L226 Difference]: Without dead ends: 117 [2020-10-20 01:47:31,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-10-20 01:47:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-20 01:47:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-10-20 01:47:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-20 01:47:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2020-10-20 01:47:31,221 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2020-10-20 01:47:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:31,222 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2020-10-20 01:47:31,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 01:47:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2020-10-20 01:47:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 01:47:31,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:31,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:31,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:31,441 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:31,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1063158393, now seen corresponding path program 1 times [2020-10-20 01:47:31,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:31,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850927897] [2020-10-20 01:47:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-20 01:47:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-20 01:47:31,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850927897] [2020-10-20 01:47:31,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961023603] [2020-10-20 01:47:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:31,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 01:47:31,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-20 01:47:31,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:31,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-10-20 01:47:31,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838941550] [2020-10-20 01:47:31,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 01:47:31,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 01:47:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:47:31,756 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand 14 states. [2020-10-20 01:47:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:32,378 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2020-10-20 01:47:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 01:47:32,379 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-20 01:47:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:32,388 INFO L225 Difference]: With dead ends: 255 [2020-10-20 01:47:32,389 INFO L226 Difference]: Without dead ends: 155 [2020-10-20 01:47:32,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-10-20 01:47:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-20 01:47:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-10-20 01:47:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 01:47:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2020-10-20 01:47:32,424 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2020-10-20 01:47:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:32,425 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2020-10-20 01:47:32,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 01:47:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2020-10-20 01:47:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-20 01:47:32,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:32,430 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:32,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 01:47:32,645 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:32,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1732889556, now seen corresponding path program 1 times [2020-10-20 01:47:32,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:32,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720300676] [2020-10-20 01:47:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-20 01:47:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-20 01:47:32,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720300676] [2020-10-20 01:47:32,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107888467] [2020-10-20 01:47:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:32,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 01:47:32,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-20 01:47:33,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:33,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2020-10-20 01:47:33,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326699803] [2020-10-20 01:47:33,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 01:47:33,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:33,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 01:47:33,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:47:33,057 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand 14 states. [2020-10-20 01:47:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:33,568 INFO L93 Difference]: Finished difference Result 241 states and 471 transitions. [2020-10-20 01:47:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 01:47:33,569 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-20 01:47:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:33,571 INFO L225 Difference]: With dead ends: 241 [2020-10-20 01:47:33,571 INFO L226 Difference]: Without dead ends: 120 [2020-10-20 01:47:33,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2020-10-20 01:47:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-20 01:47:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2020-10-20 01:47:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 01:47:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 151 transitions. [2020-10-20 01:47:33,591 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 151 transitions. Word has length 93 [2020-10-20 01:47:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:33,592 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 151 transitions. [2020-10-20 01:47:33,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 01:47:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 151 transitions. [2020-10-20 01:47:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-20 01:47:33,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:33,594 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:33,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:33,808 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:33,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1676450270, now seen corresponding path program 2 times [2020-10-20 01:47:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:33,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374396929] [2020-10-20 01:47:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-20 01:47:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:33,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:34,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 77 proven. 24 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-20 01:47:34,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374396929] [2020-10-20 01:47:34,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355205633] [2020-10-20 01:47:34,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:34,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:47:34,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:47:34,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 01:47:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-20 01:47:34,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:34,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2020-10-20 01:47:34,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682129462] [2020-10-20 01:47:34,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 01:47:34,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:34,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 01:47:34,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:47:34,216 INFO L87 Difference]: Start difference. First operand 98 states and 151 transitions. Second operand 14 states. [2020-10-20 01:47:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:34,564 INFO L93 Difference]: Finished difference Result 212 states and 383 transitions. [2020-10-20 01:47:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 01:47:34,565 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-20 01:47:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:34,567 INFO L225 Difference]: With dead ends: 212 [2020-10-20 01:47:34,568 INFO L226 Difference]: Without dead ends: 123 [2020-10-20 01:47:34,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-20 01:47:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-20 01:47:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-10-20 01:47:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-20 01:47:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 183 transitions. [2020-10-20 01:47:34,584 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 183 transitions. Word has length 92 [2020-10-20 01:47:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:34,585 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 183 transitions. [2020-10-20 01:47:34,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 01:47:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 183 transitions. [2020-10-20 01:47:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-20 01:47:34,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:34,588 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:34,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:34,804 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1836149343, now seen corresponding path program 3 times [2020-10-20 01:47:34,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:34,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361631958] [2020-10-20 01:47:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-20 01:47:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-20 01:47:35,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361631958] [2020-10-20 01:47:35,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124523031] [2020-10-20 01:47:35,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:35,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-20 01:47:35,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:47:35,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 63 conjunts are in the unsatisfiable core [2020-10-20 01:47:35,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-20 01:47:35,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:35,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2020-10-20 01:47:35,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136361530] [2020-10-20 01:47:35,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-20 01:47:35,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:35,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-20 01:47:35,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-10-20 01:47:35,942 INFO L87 Difference]: Start difference. First operand 117 states and 183 transitions. Second operand 28 states. [2020-10-20 01:47:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:36,280 INFO L93 Difference]: Finished difference Result 153 states and 269 transitions. [2020-10-20 01:47:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-20 01:47:36,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2020-10-20 01:47:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:36,284 INFO L225 Difference]: With dead ends: 153 [2020-10-20 01:47:36,284 INFO L226 Difference]: Without dead ends: 149 [2020-10-20 01:47:36,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2020-10-20 01:47:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-20 01:47:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2020-10-20 01:47:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 01:47:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 217 transitions. [2020-10-20 01:47:36,302 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 217 transitions. Word has length 106 [2020-10-20 01:47:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:36,303 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 217 transitions. [2020-10-20 01:47:36,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-20 01:47:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 217 transitions. [2020-10-20 01:47:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-20 01:47:36,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:36,306 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:36,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 01:47:36,522 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash -738302103, now seen corresponding path program 4 times [2020-10-20 01:47:36,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:36,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41044626] [2020-10-20 01:47:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-20 01:47:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 56 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-20 01:47:36,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41044626] [2020-10-20 01:47:36,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235704242] [2020-10-20 01:47:36,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:36,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 01:47:36,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:47:36,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 01:47:36,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 55 proven. 61 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-20 01:47:36,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:36,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2020-10-20 01:47:36,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120302881] [2020-10-20 01:47:36,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 01:47:36,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 01:47:36,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-20 01:47:36,930 INFO L87 Difference]: Start difference. First operand 130 states and 217 transitions. Second operand 17 states. [2020-10-20 01:47:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:37,625 INFO L93 Difference]: Finished difference Result 302 states and 636 transitions. [2020-10-20 01:47:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 01:47:37,626 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-10-20 01:47:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:37,631 INFO L225 Difference]: With dead ends: 302 [2020-10-20 01:47:37,631 INFO L226 Difference]: Without dead ends: 133 [2020-10-20 01:47:37,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2020-10-20 01:47:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-20 01:47:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 123. [2020-10-20 01:47:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 01:47:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-10-20 01:47:37,658 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 107 [2020-10-20 01:47:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:37,659 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-10-20 01:47:37,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 01:47:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-10-20 01:47:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-20 01:47:37,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:37,663 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:37,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:37,876 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:37,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2057361993, now seen corresponding path program 5 times [2020-10-20 01:47:37,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:37,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208045762] [2020-10-20 01:47:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-20 01:47:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 89 proven. 150 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-10-20 01:47:38,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208045762] [2020-10-20 01:47:38,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965390330] [2020-10-20 01:47:38,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:38,295 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-20 01:47:38,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:47:38,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 01:47:38,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 118 proven. 134 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2020-10-20 01:47:38,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:38,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2020-10-20 01:47:38,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945920532] [2020-10-20 01:47:38,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 01:47:38,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:38,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 01:47:38,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-20 01:47:38,441 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 20 states. [2020-10-20 01:47:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:39,227 INFO L93 Difference]: Finished difference Result 260 states and 393 transitions. [2020-10-20 01:47:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-20 01:47:39,228 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2020-10-20 01:47:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:39,230 INFO L225 Difference]: With dead ends: 260 [2020-10-20 01:47:39,230 INFO L226 Difference]: Without dead ends: 138 [2020-10-20 01:47:39,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=1386, Unknown=0, NotChecked=0, Total=1640 [2020-10-20 01:47:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-20 01:47:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 119. [2020-10-20 01:47:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-20 01:47:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-10-20 01:47:39,246 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 133 [2020-10-20 01:47:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:39,246 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-10-20 01:47:39,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 01:47:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-10-20 01:47:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-20 01:47:39,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:47:39,248 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:47:39,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:39,463 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:47:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:47:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash -808293890, now seen corresponding path program 1 times [2020-10-20 01:47:39,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:47:39,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666250941] [2020-10-20 01:47:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:47:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:47:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-20 01:47:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-20 01:47:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-20 01:47:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:47:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 01:47:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:47:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-10-20 01:47:39,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666250941] [2020-10-20 01:47:39,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68279933] [2020-10-20 01:47:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:47:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:47:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 01:47:39,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:47:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 133 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-20 01:47:39,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:47:39,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2020-10-20 01:47:39,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691213716] [2020-10-20 01:47:39,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 01:47:39,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:47:39,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 01:47:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-20 01:47:39,995 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 16 states. [2020-10-20 01:47:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:47:40,338 INFO L93 Difference]: Finished difference Result 223 states and 311 transitions. [2020-10-20 01:47:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 01:47:40,339 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 120 [2020-10-20 01:47:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:47:40,340 INFO L225 Difference]: With dead ends: 223 [2020-10-20 01:47:40,340 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:47:40,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2020-10-20 01:47:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:47:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:47:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:47:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:47:40,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-10-20 01:47:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:47:40,343 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:47:40,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 01:47:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:47:40,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:47:40,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-20 01:47:40,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:47:41,498 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 24 [2020-10-20 01:47:42,009 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2020-10-20 01:47:42,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:47:42,081 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:47:42,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:47:42,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:47:42,082 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-20 01:47:42,082 INFO L270 CegarLoopResult]: At program point L43(lines 37 44) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~x~0) [2020-10-20 01:47:42,082 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-10-20 01:47:42,082 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-10-20 01:47:42,082 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 5 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 5)) [2020-10-20 01:47:42,082 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-10-20 01:47:42,083 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-10-20 01:47:42,083 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-20 01:47:42,083 INFO L277 CegarLoopResult]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2020-10-20 01:47:42,083 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 2))) [2020-10-20 01:47:42,084 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-20 01:47:42,084 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (<= 1 |fibo2_#t~ret9|)) (and (<= 4 fibo2_~n) .cse0))) (or (<= |fibo2_#in~n| 3) (and (<= |fibo2_#t~ret9| 2) (<= 2 |fibo2_#t~ret9|)) (<= 5 |fibo2_#in~n|)) (not (<= |fibo2_#in~n| 2))) [2020-10-20 01:47:42,084 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-10-20 01:47:42,084 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-10-20 01:47:42,084 INFO L274 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed. [2020-10-20 01:47:42,084 INFO L274 CegarLoopResult]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2020-10-20 01:47:42,085 INFO L274 CegarLoopResult]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2020-10-20 01:47:42,085 INFO L277 CegarLoopResult]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2020-10-20 01:47:42,085 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (<= 2 |fibo1_#in~n|) (= fibo1_~n |fibo1_#in~n|)) [2020-10-20 01:47:42,085 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-20 01:47:42,085 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 3)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0)) (or (and .cse0 (<= 3 |fibo1_#in~n|)) (and (<= |fibo1_#in~n| 2) (<= 2 |fibo1_#in~n|))) (or (<= |fibo1_#in~n| 4) (and (<= 3 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 3)) (<= 6 |fibo1_#in~n|)))) [2020-10-20 01:47:42,085 INFO L274 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-10-20 01:47:42,085 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-10-20 01:47:42,086 INFO L274 CegarLoopResult]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2020-10-20 01:47:42,086 INFO L274 CegarLoopResult]: For program point L10(lines 10 16) no Hoare annotation was computed. [2020-10-20 01:47:42,086 INFO L274 CegarLoopResult]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2020-10-20 01:47:42,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:47:42 BoogieIcfgContainer [2020-10-20 01:47:42,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:47:42,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:47:42,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:47:42,102 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:47:42,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:47:27" (3/4) ... [2020-10-20 01:47:42,106 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:47:42,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2020-10-20 01:47:42,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2020-10-20 01:47:42,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 01:47:42,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:47:42,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:47:42,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:47:42,164 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:47:42,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:47:42,166 INFO L168 Benchmark]: Toolchain (without parser) took 15437.98 ms. Allocated memory was 40.9 MB in the beginning and 109.6 MB in the end (delta: 68.7 MB). Free memory was 19.2 MB in the beginning and 66.4 MB in the end (delta: -47.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,167 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.55 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.4 MB in the beginning and 19.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.23 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 17.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,169 INFO L168 Benchmark]: Boogie Preprocessor took 20.87 ms. Allocated memory is still 41.9 MB. Free memory was 17.8 MB in the beginning and 16.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,169 INFO L168 Benchmark]: RCFGBuilder took 363.17 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 16.5 MB in the beginning and 18.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,170 INFO L168 Benchmark]: TraceAbstraction took 14659.67 ms. Allocated memory was 43.5 MB in the beginning and 109.6 MB in the end (delta: 66.1 MB). Free memory was 18.1 MB in the beginning and 69.7 MB in the end (delta: -51.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,170 INFO L168 Benchmark]: Witness Printer took 62.82 ms. Allocated memory is still 109.6 MB. Free memory was 69.7 MB in the beginning and 66.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:47:42,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 273.55 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.4 MB in the beginning and 19.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.23 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 17.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 20.87 ms. Allocated memory is still 41.9 MB. Free memory was 17.8 MB in the beginning and 16.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 363.17 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 16.5 MB in the beginning and 18.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 14659.67 ms. Allocated memory was 43.5 MB in the beginning and 109.6 MB in the end (delta: 66.1 MB). Free memory was 18.1 MB in the beginning and 69.7 MB in the end (delta: -51.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 14.3 GB. * Witness Printer took 62.82 ms. Allocated memory is still 109.6 MB. Free memory was 69.7 MB in the beginning and 66.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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: 37]: Loop Invariant Derived loop invariant: 5 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 13, TraceHistogramMax: 10, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 389 SDtfs, 542 SDslu, 3052 SDs, 0 SdLazy, 3835 SolverSat, 539 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1294 GetRequests, 1041 SyntacticMatches, 8 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=10, 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, 13 MinimizatonAttempts, 142 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 557 PreInvPairs, 822 NumberOfFragments, 109 HoareAnnotationTreeSize, 557 FomulaSimplifications, 7652 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3967 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1665 NumberOfCodeBlocks, 1600 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1641 ConstructedInterpolants, 0 QuantifiedInterpolants, 314863 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1928 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 2527/3582 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...