./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e40a98558d0111ea95f3ee60a44cc14c7768182 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:47:01,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:01,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:01,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:01,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:01,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:01,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:01,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:01,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:01,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:01,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:01,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:01,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:01,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:01,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:01,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:01,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:01,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:01,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:01,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:01,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:01,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:01,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:01,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:01,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:01,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:01,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:01,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:01,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:01,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:01,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:01,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:01,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:01,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:01,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:01,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:01,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:01,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:01,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:01,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:01,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:01,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-25 08:47:01,600 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:01,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:01,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:01,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:01,611 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:01,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:01,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:01,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:01,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:01,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:01,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:01,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:01,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:01,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:01,614 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:47:01,614 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:01,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:01,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:01,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:01,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:01,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:01,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:01,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:01,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:01,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:01,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:01,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:01,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:01,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:47:01,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:01,618 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer 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 ! overflow) ) 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 -> 7e40a98558d0111ea95f3ee60a44cc14c7768182 [2019-11-25 08:47:01,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:01,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:01,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:01,801 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:01,801 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:01,802 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02.c [2019-11-25 08:47:01,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/data/8383e6ca7/40f3cee9a07b46f5b057d0f642f1ce70/FLAG92bdc9e67 [2019-11-25 08:47:02,244 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:02,245 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/sv-benchmarks/c/recursive/Fibonacci02.c [2019-11-25 08:47:02,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/data/8383e6ca7/40f3cee9a07b46f5b057d0f642f1ce70/FLAG92bdc9e67 [2019-11-25 08:47:02,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/data/8383e6ca7/40f3cee9a07b46f5b057d0f642f1ce70 [2019-11-25 08:47:02,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:02,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:02,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:02,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:02,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:02,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:02" (1/1) ... [2019-11-25 08:47:02,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bcc28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:02, skipping insertion in model container [2019-11-25 08:47:02,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:02" (1/1) ... [2019-11-25 08:47:02,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:02,720 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:02,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:02,972 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:02,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:03,004 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:03,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03 WrapperNode [2019-11-25 08:47:03,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:03,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:03,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:03,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:03,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:03,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:03,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:03,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:03,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... [2019-11-25 08:47:03,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:03,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:03,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:03,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:03,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-11-25 08:47:03,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-11-25 08:47:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:03,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:03,280 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:03,280 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:47:03,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:03 BoogieIcfgContainer [2019-11-25 08:47:03,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:03,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:03,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:03,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:03,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:02" (1/3) ... [2019-11-25 08:47:03,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5a76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:03, skipping insertion in model container [2019-11-25 08:47:03,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:03" (2/3) ... [2019-11-25 08:47:03,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5a76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:03, skipping insertion in model container [2019-11-25 08:47:03,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:03" (3/3) ... [2019-11-25 08:47:03,303 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2019-11-25 08:47:03,310 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:03,330 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-25 08:47:03,340 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-25 08:47:03,388 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:03,389 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:03,389 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:03,389 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:03,389 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:03,389 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:03,389 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:03,390 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-25 08:47:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:47:03,408 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:03,409 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:47:03,409 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1701129783, now seen corresponding path program 1 times [2019-11-25 08:47:03,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:03,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860841794] [2019-11-25 08:47:03,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:03,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860841794] [2019-11-25 08:47:03,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:03,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:47:03,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386548756] [2019-11-25 08:47:03,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:03,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:03,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:03,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:03,570 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-11-25 08:47:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:03,671 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-25 08:47:03,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:03,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-25 08:47:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:03,679 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:47:03,679 INFO L226 Difference]: Without dead ends: 21 [2019-11-25 08:47:03,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:47:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-25 08:47:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-25 08:47:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:47:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-25 08:47:03,715 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 6 [2019-11-25 08:47:03,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:03,715 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-25 08:47:03,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-25 08:47:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:47:03,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:03,717 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:03,717 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:03,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1195415763, now seen corresponding path program 1 times [2019-11-25 08:47:03,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:03,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29219775] [2019-11-25 08:47:03,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:03,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29219775] [2019-11-25 08:47:03,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:03,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:47:03,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264619591] [2019-11-25 08:47:03,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:03,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:03,739 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2019-11-25 08:47:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:03,771 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-25 08:47:03,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:03,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-25 08:47:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:03,774 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:47:03,774 INFO L226 Difference]: Without dead ends: 21 [2019-11-25 08:47:03,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-25 08:47:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-25 08:47:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:47:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-25 08:47:03,782 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2019-11-25 08:47:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:03,782 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-25 08:47:03,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-25 08:47:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-25 08:47:03,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:03,784 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:03,784 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1513310471, now seen corresponding path program 1 times [2019-11-25 08:47:03,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:03,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195289862] [2019-11-25 08:47:03,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:47:04,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195289862] [2019-11-25 08:47:04,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995449410] [2019-11-25 08:47:04,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:04,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:47:04,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:04,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:04,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 13 [2019-11-25 08:47:04,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425844170] [2019-11-25 08:47:04,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:47:04,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:04,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:47:04,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:47:04,115 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 13 states. [2019-11-25 08:47:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:04,482 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2019-11-25 08:47:04,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:47:04,482 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2019-11-25 08:47:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:04,484 INFO L225 Difference]: With dead ends: 72 [2019-11-25 08:47:04,484 INFO L226 Difference]: Without dead ends: 53 [2019-11-25 08:47:04,486 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:47:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-25 08:47:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2019-11-25 08:47:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-25 08:47:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2019-11-25 08:47:04,499 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 28 [2019-11-25 08:47:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:04,499 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2019-11-25 08:47:04,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:47:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2019-11-25 08:47:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:47:04,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:04,502 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:04,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:04,707 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:04,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:04,707 INFO L82 PathProgramCache]: Analyzing trace with hash 317957503, now seen corresponding path program 1 times [2019-11-25 08:47:04,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:04,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712370976] [2019-11-25 08:47:04,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:47:04,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712370976] [2019-11-25 08:47:04,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615453460] [2019-11-25 08:47:04,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:04,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:47:04,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:04,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:04,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 14 [2019-11-25 08:47:04,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874197577] [2019-11-25 08:47:04,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:47:04,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:04,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:47:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:47:04,982 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 14 states. [2019-11-25 08:47:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:05,387 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2019-11-25 08:47:05,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:47:05,387 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2019-11-25 08:47:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:05,388 INFO L225 Difference]: With dead ends: 90 [2019-11-25 08:47:05,389 INFO L226 Difference]: Without dead ends: 55 [2019-11-25 08:47:05,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:47:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-25 08:47:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2019-11-25 08:47:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-25 08:47:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2019-11-25 08:47:05,411 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 30 [2019-11-25 08:47:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:05,411 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2019-11-25 08:47:05,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:47:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2019-11-25 08:47:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-25 08:47:05,413 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:05,414 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:05,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:05,617 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:05,617 INFO L82 PathProgramCache]: Analyzing trace with hash -345552101, now seen corresponding path program 2 times [2019-11-25 08:47:05,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:05,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165489393] [2019-11-25 08:47:05,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:47:05,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165489393] [2019-11-25 08:47:05,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772291289] [2019-11-25 08:47:05,819 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:05,849 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:05,849 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:05,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:05,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-25 08:47:05,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:47:05,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-11-25 08:47:05,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000715419] [2019-11-25 08:47:05,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:05,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:05,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:05,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:47:05,897 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 5 states. [2019-11-25 08:47:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:05,932 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2019-11-25 08:47:05,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:05,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-11-25 08:47:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:05,934 INFO L225 Difference]: With dead ends: 57 [2019-11-25 08:47:05,934 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:47:05,934 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:47:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:47:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-11-25 08:47:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-25 08:47:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2019-11-25 08:47:05,942 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 34 [2019-11-25 08:47:05,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:05,942 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2019-11-25 08:47:05,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2019-11-25 08:47:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-25 08:47:05,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:05,944 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:06,151 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:06,151 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:06,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:06,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1803486695, now seen corresponding path program 1 times [2019-11-25 08:47:06,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:06,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469299238] [2019-11-25 08:47:06,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:47:06,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469299238] [2019-11-25 08:47:06,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371857282] [2019-11-25 08:47:06,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:06,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:47:06,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:06,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:06,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 17 [2019-11-25 08:47:06,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071261319] [2019-11-25 08:47:06,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:47:06,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:06,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:47:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:47:06,438 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 17 states. [2019-11-25 08:47:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:06,911 INFO L93 Difference]: Finished difference Result 130 states and 165 transitions. [2019-11-25 08:47:06,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-25 08:47:06,912 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2019-11-25 08:47:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:06,913 INFO L225 Difference]: With dead ends: 130 [2019-11-25 08:47:06,913 INFO L226 Difference]: Without dead ends: 91 [2019-11-25 08:47:06,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2019-11-25 08:47:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-25 08:47:06,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2019-11-25 08:47:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-25 08:47:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2019-11-25 08:47:06,928 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 41 [2019-11-25 08:47:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:06,928 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2019-11-25 08:47:06,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:47:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2019-11-25 08:47:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-25 08:47:06,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:06,930 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:07,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:07,135 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1458107581, now seen corresponding path program 2 times [2019-11-25 08:47:07,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:07,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210804181] [2019-11-25 08:47:07,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:47:07,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210804181] [2019-11-25 08:47:07,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709986184] [2019-11-25 08:47:07,358 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:07,380 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:07,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:07,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:47:07,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:07,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:07,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 18 [2019-11-25 08:47:07,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001922291] [2019-11-25 08:47:07,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:47:07,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:47:07,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:47:07,414 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 18 states. [2019-11-25 08:47:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:07,933 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2019-11-25 08:47:07,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-25 08:47:07,933 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2019-11-25 08:47:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:07,934 INFO L225 Difference]: With dead ends: 158 [2019-11-25 08:47:07,934 INFO L226 Difference]: Without dead ends: 91 [2019-11-25 08:47:07,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:47:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-25 08:47:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2019-11-25 08:47:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-25 08:47:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2019-11-25 08:47:07,950 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 42 [2019-11-25 08:47:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:07,951 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2019-11-25 08:47:07,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:47:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2019-11-25 08:47:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-25 08:47:07,952 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:07,953 INFO L410 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:08,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:08,155 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:08,156 INFO L82 PathProgramCache]: Analyzing trace with hash -248795849, now seen corresponding path program 2 times [2019-11-25 08:47:08,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:08,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084470889] [2019-11-25 08:47:08,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:47:08,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084470889] [2019-11-25 08:47:08,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345927202] [2019-11-25 08:47:08,349 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:08,382 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:08,382 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:08,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:08,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-11-25 08:47:08,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:47:08,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2019-11-25 08:47:08,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415559426] [2019-11-25 08:47:08,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:08,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:08,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:08,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:47:08,421 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand 5 states. [2019-11-25 08:47:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:08,454 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2019-11-25 08:47:08,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:08,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-11-25 08:47:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:08,457 INFO L225 Difference]: With dead ends: 89 [2019-11-25 08:47:08,457 INFO L226 Difference]: Without dead ends: 88 [2019-11-25 08:47:08,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:47:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-25 08:47:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2019-11-25 08:47:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-25 08:47:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2019-11-25 08:47:08,467 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 47 [2019-11-25 08:47:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:08,469 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2019-11-25 08:47:08,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2019-11-25 08:47:08,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-25 08:47:08,471 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:08,471 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:08,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:08,674 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:08,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:08,674 INFO L82 PathProgramCache]: Analyzing trace with hash -714183989, now seen corresponding path program 1 times [2019-11-25 08:47:08,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:08,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181435664] [2019-11-25 08:47:08,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:47:08,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181435664] [2019-11-25 08:47:08,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762015854] [2019-11-25 08:47:08,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:08,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:47:08,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 22 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:08,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 21 [2019-11-25 08:47:08,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035015144] [2019-11-25 08:47:08,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-25 08:47:08,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-25 08:47:08,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:47:08,939 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 21 states. [2019-11-25 08:47:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:09,659 INFO L93 Difference]: Finished difference Result 206 states and 257 transitions. [2019-11-25 08:47:09,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-25 08:47:09,659 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 53 [2019-11-25 08:47:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:09,660 INFO L225 Difference]: With dead ends: 206 [2019-11-25 08:47:09,660 INFO L226 Difference]: Without dead ends: 134 [2019-11-25 08:47:09,662 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2019-11-25 08:47:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-11-25 08:47:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2019-11-25 08:47:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-11-25 08:47:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2019-11-25 08:47:09,674 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 53 [2019-11-25 08:47:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:09,674 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2019-11-25 08:47:09,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-25 08:47:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2019-11-25 08:47:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:47:09,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:09,676 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:09,878 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:09,882 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1889266439, now seen corresponding path program 3 times [2019-11-25 08:47:09,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:09,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014722094] [2019-11-25 08:47:09,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 1 proven. 128 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:47:10,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014722094] [2019-11-25 08:47:10,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644619280] [2019-11-25 08:47:10,157 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:10,190 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-25 08:47:10,190 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:10,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:47:10,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-11-25 08:47:10,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:47:10,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [20] total 23 [2019-11-25 08:47:10,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453219617] [2019-11-25 08:47:10,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:10,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:10,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:47:10,254 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand 5 states. [2019-11-25 08:47:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:10,281 INFO L93 Difference]: Finished difference Result 147 states and 184 transitions. [2019-11-25 08:47:10,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:10,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2019-11-25 08:47:10,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:10,284 INFO L225 Difference]: With dead ends: 147 [2019-11-25 08:47:10,284 INFO L226 Difference]: Without dead ends: 146 [2019-11-25 08:47:10,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:47:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-25 08:47:10,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 132. [2019-11-25 08:47:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-25 08:47:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 166 transitions. [2019-11-25 08:47:10,296 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 166 transitions. Word has length 54 [2019-11-25 08:47:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:10,296 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 166 transitions. [2019-11-25 08:47:10,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 166 transitions. [2019-11-25 08:47:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-25 08:47:10,298 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:10,298 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:10,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:10,502 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1250306354, now seen corresponding path program 1 times [2019-11-25 08:47:10,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:10,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035074490] [2019-11-25 08:47:10,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 12 proven. 186 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-25 08:47:10,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035074490] [2019-11-25 08:47:10,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966503965] [2019-11-25 08:47:10,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:47:10,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 80 proven. 108 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-25 08:47:10,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:10,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17] total 24 [2019-11-25 08:47:10,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458313429] [2019-11-25 08:47:10,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-25 08:47:10,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:10,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-25 08:47:10,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:47:10,878 INFO L87 Difference]: Start difference. First operand 132 states and 166 transitions. Second operand 24 states. [2019-11-25 08:47:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:11,702 INFO L93 Difference]: Finished difference Result 263 states and 338 transitions. [2019-11-25 08:47:11,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-25 08:47:11,702 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 73 [2019-11-25 08:47:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:11,704 INFO L225 Difference]: With dead ends: 263 [2019-11-25 08:47:11,704 INFO L226 Difference]: Without dead ends: 145 [2019-11-25 08:47:11,706 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2019-11-25 08:47:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-25 08:47:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 133. [2019-11-25 08:47:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-25 08:47:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2019-11-25 08:47:11,718 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 73 [2019-11-25 08:47:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:11,718 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2019-11-25 08:47:11,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-25 08:47:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2019-11-25 08:47:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-25 08:47:11,720 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:11,720 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:11,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:11,921 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:11,921 INFO L82 PathProgramCache]: Analyzing trace with hash -453713612, now seen corresponding path program 2 times [2019-11-25 08:47:11,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:11,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961344287] [2019-11-25 08:47:11,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 174 proven. 127 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:47:12,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961344287] [2019-11-25 08:47:12,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146485812] [2019-11-25 08:47:12,401 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:12,447 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:12,447 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:12,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-25 08:47:12,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 178 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:47:12,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:12,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21] total 31 [2019-11-25 08:47:12,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344259945] [2019-11-25 08:47:12,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-25 08:47:12,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:12,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-25 08:47:12,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2019-11-25 08:47:12,538 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand 31 states. [2019-11-25 08:47:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:14,114 INFO L93 Difference]: Finished difference Result 275 states and 347 transitions. [2019-11-25 08:47:14,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-11-25 08:47:14,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 85 [2019-11-25 08:47:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:14,116 INFO L225 Difference]: With dead ends: 275 [2019-11-25 08:47:14,116 INFO L226 Difference]: Without dead ends: 156 [2019-11-25 08:47:14,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1353, Invalid=4197, Unknown=0, NotChecked=0, Total=5550 [2019-11-25 08:47:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-25 08:47:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2019-11-25 08:47:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-25 08:47:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-11-25 08:47:14,127 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 85 [2019-11-25 08:47:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:14,128 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-11-25 08:47:14,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-25 08:47:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-11-25 08:47:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-25 08:47:14,129 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:14,130 INFO L410 BasicCegarLoop]: trace histogram [12, 10, 8, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-25 08:47:14,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:14,333 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:14,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1738955289, now seen corresponding path program 3 times [2019-11-25 08:47:14,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:14,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206654287] [2019-11-25 08:47:14,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 16 proven. 272 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-25 08:47:14,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206654287] [2019-11-25 08:47:14,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873643078] [2019-11-25 08:47:14,794 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/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 [2019-11-25 08:47:14,827 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-25 08:47:14,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:14,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:47:14,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 100 proven. 51 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2019-11-25 08:47:14,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:14,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 9] total 33 [2019-11-25 08:47:14,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120889640] [2019-11-25 08:47:14,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-25 08:47:14,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-25 08:47:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:47:14,971 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 33 states. [2019-11-25 08:47:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:16,058 INFO L93 Difference]: Finished difference Result 265 states and 311 transitions. [2019-11-25 08:47:16,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-25 08:47:16,058 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 92 [2019-11-25 08:47:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:16,059 INFO L225 Difference]: With dead ends: 265 [2019-11-25 08:47:16,060 INFO L226 Difference]: Without dead ends: 142 [2019-11-25 08:47:16,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=517, Invalid=2453, Unknown=0, NotChecked=0, Total=2970 [2019-11-25 08:47:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-25 08:47:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2019-11-25 08:47:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-25 08:47:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2019-11-25 08:47:16,070 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 92 [2019-11-25 08:47:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:16,070 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2019-11-25 08:47:16,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-25 08:47:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2019-11-25 08:47:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-25 08:47:16,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:16,072 INFO L410 BasicCegarLoop]: trace histogram [14, 11, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1] [2019-11-25 08:47:16,275 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:16,275 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash -934108332, now seen corresponding path program 4 times [2019-11-25 08:47:16,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:16,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826087492] [2019-11-25 08:47:16,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-25 08:47:16,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826087492] [2019-11-25 08:47:16,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301734045] [2019-11-25 08:47:16,702 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:16,749 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:47:16,749 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:16,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:47:16,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 186 proven. 214 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-25 08:47:16,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:16,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18] total 28 [2019-11-25 08:47:16,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387029630] [2019-11-25 08:47:16,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-25 08:47:16,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:16,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-25 08:47:16,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2019-11-25 08:47:16,829 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 28 states. [2019-11-25 08:47:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:17,866 INFO L93 Difference]: Finished difference Result 260 states and 297 transitions. [2019-11-25 08:47:17,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-25 08:47:17,866 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 111 [2019-11-25 08:47:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:17,868 INFO L225 Difference]: With dead ends: 260 [2019-11-25 08:47:17,868 INFO L226 Difference]: Without dead ends: 142 [2019-11-25 08:47:17,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=417, Invalid=1745, Unknown=0, NotChecked=0, Total=2162 [2019-11-25 08:47:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-25 08:47:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2019-11-25 08:47:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-25 08:47:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2019-11-25 08:47:17,884 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 111 [2019-11-25 08:47:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:17,886 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2019-11-25 08:47:17,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-25 08:47:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2019-11-25 08:47:17,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-25 08:47:17,887 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:17,887 INFO L410 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1] [2019-11-25 08:47:18,091 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:18,091 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:18,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1590749972, now seen corresponding path program 5 times [2019-11-25 08:47:18,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:18,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217442838] [2019-11-25 08:47:18,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2019-11-25 08:47:18,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217442838] [2019-11-25 08:47:18,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435441129] [2019-11-25 08:47:18,231 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:18,288 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-25 08:47:18,288 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:18,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-25 08:47:18,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2019-11-25 08:47:18,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:18,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2019-11-25 08:47:18,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705260650] [2019-11-25 08:47:18,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:47:18,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:18,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:47:18,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:47:18,357 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand 13 states. [2019-11-25 08:47:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:18,424 INFO L93 Difference]: Finished difference Result 134 states and 150 transitions. [2019-11-25 08:47:18,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:47:18,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2019-11-25 08:47:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:18,426 INFO L225 Difference]: With dead ends: 134 [2019-11-25 08:47:18,426 INFO L226 Difference]: Without dead ends: 133 [2019-11-25 08:47:18,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:47:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-11-25 08:47:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2019-11-25 08:47:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-25 08:47:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2019-11-25 08:47:18,439 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 112 [2019-11-25 08:47:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:18,440 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2019-11-25 08:47:18,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:47:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2019-11-25 08:47:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-25 08:47:18,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:18,442 INFO L410 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1] [2019-11-25 08:47:18,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:18,646 INFO L410 AbstractCegarLoop]: === Iteration 16 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:18,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2068608930, now seen corresponding path program 1 times [2019-11-25 08:47:18,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:18,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936354604] [2019-11-25 08:47:18,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2019-11-25 08:47:18,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936354604] [2019-11-25 08:47:18,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154690914] [2019-11-25 08:47:18,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:47:18,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 30 proven. 44 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2019-11-25 08:47:18,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:18,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2019-11-25 08:47:18,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639107986] [2019-11-25 08:47:18,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:47:18,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:47:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:47:18,945 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand 15 states. [2019-11-25 08:47:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:19,041 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2019-11-25 08:47:19,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:47:19,042 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 113 [2019-11-25 08:47:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:19,044 INFO L225 Difference]: With dead ends: 132 [2019-11-25 08:47:19,044 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:47:19,044 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:47:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:47:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-11-25 08:47:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-25 08:47:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2019-11-25 08:47:19,053 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 113 [2019-11-25 08:47:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:19,053 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2019-11-25 08:47:19,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:47:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2019-11-25 08:47:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-25 08:47:19,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:19,056 INFO L410 BasicCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1] [2019-11-25 08:47:19,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:19,259 INFO L410 AbstractCegarLoop]: === Iteration 17 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1288089853, now seen corresponding path program 6 times [2019-11-25 08:47:19,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:19,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810219856] [2019-11-25 08:47:19,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2019-11-25 08:47:19,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810219856] [2019-11-25 08:47:19,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434590873] [2019-11-25 08:47:19,489 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:19,555 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2019-11-25 08:47:19,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:19,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-25 08:47:19,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2019-11-25 08:47:19,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:19,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2019-11-25 08:47:19,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192208937] [2019-11-25 08:47:19,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:47:19,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:19,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:47:19,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:47:19,684 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand 17 states. [2019-11-25 08:47:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:19,744 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2019-11-25 08:47:19,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:47:19,745 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 165 [2019-11-25 08:47:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:19,746 INFO L225 Difference]: With dead ends: 131 [2019-11-25 08:47:19,746 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:47:19,747 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:47:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:47:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-11-25 08:47:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-25 08:47:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2019-11-25 08:47:19,753 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 165 [2019-11-25 08:47:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:19,758 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2019-11-25 08:47:19,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:47:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2019-11-25 08:47:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-11-25 08:47:19,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:19,762 INFO L410 BasicCegarLoop]: trace histogram [28, 24, 23, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 11, 11, 8, 5, 1, 1, 1] [2019-11-25 08:47:19,966 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:19,966 INFO L410 AbstractCegarLoop]: === Iteration 18 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1461844116, now seen corresponding path program 7 times [2019-11-25 08:47:19,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:19,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469071568] [2019-11-25 08:47:19,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2019-11-25 08:47:20,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469071568] [2019-11-25 08:47:20,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159428471] [2019-11-25 08:47:20,427 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-25 08:47:20,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2019-11-25 08:47:20,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:20,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 20 [2019-11-25 08:47:20,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094353917] [2019-11-25 08:47:20,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-25 08:47:20,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:20,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-25 08:47:20,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:47:20,708 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand 21 states. [2019-11-25 08:47:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:20,777 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2019-11-25 08:47:20,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:47:20,778 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 257 [2019-11-25 08:47:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:20,780 INFO L225 Difference]: With dead ends: 131 [2019-11-25 08:47:20,780 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:47:20,780 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:47:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:47:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-11-25 08:47:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-25 08:47:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2019-11-25 08:47:20,789 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 257 [2019-11-25 08:47:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:20,791 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2019-11-25 08:47:20,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-25 08:47:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2019-11-25 08:47:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2019-11-25 08:47:20,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:20,797 INFO L410 BasicCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1] [2019-11-25 08:47:21,000 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:21,000 INFO L410 AbstractCegarLoop]: === Iteration 19 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:21,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:21,001 INFO L82 PathProgramCache]: Analyzing trace with hash 648414394, now seen corresponding path program 8 times [2019-11-25 08:47:21,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:21,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98780429] [2019-11-25 08:47:21,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2019-11-25 08:47:21,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98780429] [2019-11-25 08:47:21,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575959454] [2019-11-25 08:47:21,846 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:21,958 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:21,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:21,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjunts are in the unsatisfiable core [2019-11-25 08:47:21,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2019-11-25 08:47:22,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:22,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2019-11-25 08:47:22,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309139217] [2019-11-25 08:47:22,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-25 08:47:22,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:22,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-25 08:47:22,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:47:22,319 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 25 states. [2019-11-25 08:47:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:22,405 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2019-11-25 08:47:22,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-25 08:47:22,405 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 408 [2019-11-25 08:47:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:22,407 INFO L225 Difference]: With dead ends: 131 [2019-11-25 08:47:22,407 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:47:22,408 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:47:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:47:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-11-25 08:47:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-25 08:47:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2019-11-25 08:47:22,416 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 408 [2019-11-25 08:47:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:22,417 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2019-11-25 08:47:22,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-25 08:47:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2019-11-25 08:47:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2019-11-25 08:47:22,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:22,429 INFO L410 BasicCegarLoop]: trace histogram [68, 66, 55, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 32, 32, 21, 13, 1, 1, 1] [2019-11-25 08:47:22,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:22,641 INFO L410 AbstractCegarLoop]: === Iteration 20 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:22,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:22,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1470667451, now seen corresponding path program 9 times [2019-11-25 08:47:22,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:22,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842319503] [2019-11-25 08:47:22,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2019-11-25 08:47:24,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842319503] [2019-11-25 08:47:24,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671432634] [2019-11-25 08:47:24,374 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:24,659 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2019-11-25 08:47:24,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:24,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 133 conjunts are in the unsatisfiable core [2019-11-25 08:47:24,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2019-11-25 08:47:25,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:25,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 28 [2019-11-25 08:47:25,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945432304] [2019-11-25 08:47:25,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-25 08:47:25,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:25,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-25 08:47:25,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:47:25,356 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 29 states. [2019-11-25 08:47:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:25,463 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2019-11-25 08:47:25,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-25 08:47:25,464 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 657 [2019-11-25 08:47:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:25,466 INFO L225 Difference]: With dead ends: 131 [2019-11-25 08:47:25,466 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:47:25,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:47:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:47:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-11-25 08:47:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-25 08:47:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2019-11-25 08:47:25,478 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 657 [2019-11-25 08:47:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:25,480 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2019-11-25 08:47:25,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-25 08:47:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2019-11-25 08:47:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2019-11-25 08:47:25,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:25,490 INFO L410 BasicCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1] [2019-11-25 08:47:25,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:25,691 INFO L410 AbstractCegarLoop]: === Iteration 21 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:25,692 INFO L82 PathProgramCache]: Analyzing trace with hash 607316682, now seen corresponding path program 10 times [2019-11-25 08:47:25,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:25,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596919886] [2019-11-25 08:47:25,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2019-11-25 08:47:29,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596919886] [2019-11-25 08:47:29,165 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070533388] [2019-11-25 08:47:29,165 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:29,424 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:47:29,424 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:29,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 217 conjunts are in the unsatisfiable core [2019-11-25 08:47:29,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2019-11-25 08:47:30,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:30,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 32 [2019-11-25 08:47:30,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271786294] [2019-11-25 08:47:30,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-25 08:47:30,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:30,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-25 08:47:30,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:47:30,781 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 33 states. [2019-11-25 08:47:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:30,892 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2019-11-25 08:47:30,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-25 08:47:30,892 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1063 [2019-11-25 08:47:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:30,894 INFO L225 Difference]: With dead ends: 130 [2019-11-25 08:47:30,894 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:47:30,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1464 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:47:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:47:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:47:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:47:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:47:30,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1063 [2019-11-25 08:47:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:30,896 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:30,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-25 08:47:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:47:30,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:47:31,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:31,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:47:31,743 WARN L192 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2019-11-25 08:47:31,921 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 11 [2019-11-25 08:47:31,924 INFO L444 ceAbstractionStarter]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,924 INFO L444 ceAbstractionStarter]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L447 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L444 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,925 INFO L440 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (or (= fibonacci_~n |fibonacci_#in~n|) (not (<= |fibonacci_#in~n| 9))) (not (<= |fibonacci_#in~n| 1))) [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L440 ceAbstractionStarter]: At program point L20-6(line 20) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= 2 |fibonacci_#t~ret0|))) (and (or (not (<= |fibonacci_#in~n| 4)) (not (<= 4 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret0| 2) .cse0 .cse1)) (or (< 1 fibonacci_~n) (not (<= |fibonacci_#in~n| 2))) (or (not (<= 9 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 9)) (and (<= |fibonacci_#t~ret0| 21) .cse0 .cse1)) (or (not (<= |fibonacci_#in~n| 7)) (not (<= 7 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret0| 8) .cse0 .cse1)) (or (not (<= |fibonacci_#in~n| 5)) (and (<= |fibonacci_#t~ret0| 3) (<= fibonacci_~n 5) .cse1 (<= 5 fibonacci_~n)) (not (<= 5 |fibonacci_#in~n|))) (or (and (<= |fibonacci_#t~ret0| 1) (<= 1 |fibonacci_#t~ret0|) .cse0) (not (<= |fibonacci_#in~n| 3))) (or (and .cse0 .cse1 (<= |fibonacci_#t~ret0| 13)) (not (<= 8 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 8))) (or (and (<= |fibonacci_#t~ret0| 5) .cse0 .cse1) (not (<= 6 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 6))))) [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L20-8(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L20-9(line 20) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-11-25 08:47:31,926 INFO L440 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) [2019-11-25 08:47:31,927 INFO L444 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-25 08:47:31,927 INFO L440 ceAbstractionStarter]: At program point L25(lines 25 33) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 9) [2019-11-25 08:47:31,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:47:31 BoogieIcfgContainer [2019-11-25 08:47:31,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:47:31,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:31,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:31,941 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:31,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:03" (3/4) ... [2019-11-25 08:47:31,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:47:31,950 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2019-11-25 08:47:31,954 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-25 08:47:31,954 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:47:31,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_09c22fda-50e6-48e2-92f9-d0a99d46e85e/bin/uautomizer/witness.graphml [2019-11-25 08:47:31,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:31,994 INFO L168 Benchmark]: Toolchain (without parser) took 29318.63 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 935.9 MB). Free memory was 950.1 MB in the beginning and 1.5 GB in the end (delta: -590.9 MB). Peak memory consumption was 345.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:31,994 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:31,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -225.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:31,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:31,995 INFO L168 Benchmark]: Boogie Preprocessor took 15.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:31,996 INFO L168 Benchmark]: RCFGBuilder took 234.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:31,996 INFO L168 Benchmark]: TraceAbstraction took 28656.06 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 757.6 MB). Free memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: -393.1 MB). Peak memory consumption was 364.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:31,997 INFO L168 Benchmark]: Witness Printer took 51.88 ms. Allocated memory is still 2.0 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:31,999 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -225.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 234.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28656.06 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 757.6 MB). Free memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: -393.1 MB). Peak memory consumption was 364.5 MB. Max. memory is 11.5 GB. * Witness Printer took 51.88 ms. Allocated memory is still 2.0 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: x <= 9 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 6 error locations. Result: SAFE, OverallTime: 28.5s, OverallIterations: 21, TraceHistogramMax: 109, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, HoareTripleCheckerStatistics: 599 SDtfs, 2654 SDslu, 3666 SDs, 0 SdLazy, 6109 SolverSat, 1001 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5006 GetRequests, 4475 SyntacticMatches, 0 SemanticMatches, 531 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3656 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 122 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 302 PreInvPairs, 355 NumberOfFragments, 165 HoareAnnotationTreeSize, 302 FomulaSimplifications, 263 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1203 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 6943 NumberOfCodeBlocks, 6842 NumberOfCodeBlocksAsserted, 123 NumberOfCheckSat, 6903 ConstructedInterpolants, 0 QuantifiedInterpolants, 9620914 SizeOfPredicates, 60 NumberOfNonLiveVariables, 6257 ConjunctsInSsa, 675 ConjunctsInUnsatCore, 40 InterpolantComputations, 5 PerfectInterpolantSequences, 111077/138086 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...